D — https://fudan.edu.cn | BeaverCheck Audit

Site Health

Score: 68 / 100

Based on 8 categories, 0 sections

Decent speed, but optimizing further could improve engagement.

Several missing protections leave your users and data exposed.

Major barriers for users with disabilities — up to 15% of your audience.

Well-optimized for search — your content is discoverable.

Solid infrastructure — fast server responses across the board.

Several regulatory requirements are not yet met.

Missing metadata means poor previews on social media and search.

Heavier than average — reducing page weight saves energy and bandwidth.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

Flowplayer · 7 peers

You 68

Avg 69

At average

0 50 100

Better than 14% of Flowplayer sites See full Flowplayer benchmark →

jQuery · 1759 peers

You 68

Avg 73

At average

0 50 100

Better than 4% of jQuery sites See full jQuery benchmark →

Top Priorities (5)

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

HSTS header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy

Page weighs 28.1 MB (26.7 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget

1 control(s) without accessible label

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Form Accessibility

View fix priority matrix

Fix Priority Matrix

5 findings

Impact

Quick Wins

High impact, low effort — start here.

Strategic

High impact, requires investment.

Easy Improvements

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →

Embed this badge

Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Ffudan.edu.cn)](https://beavercheck.com/results/eac0494b-acbc-4256-b81b-a372949680d6)

HTML

<a href="https://beavercheck.com/results/eac0494b-acbc-4256-b81b-a372949680d6"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Ffudan.edu.cn" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Ffudan.edu.cn

This badge auto-updates with your latest scan result.

What fixing these means

Your site has several issues that may be affecting user experience and business outcomes. Your LCP of 33.9s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your user trust.

3 security gaps detected — browsers may warn visitors about your site.

Your LCP is 33.9s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.

1 accessibility issue excludes users who rely on assistive technology.

Could reach Estimate based on resolving critical issues

Conversion Barriers

3 critical 9 warning

12 barrier(s) likely increasing bounce by ~35%.

Speed (2)

Page takes 33.9s to load

+12% bounce

Users abandon at ~3s — you're 31.4s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

Page feels frozen for 1.8s

+5% bounce

Clicks on the primary CTA are ignored while JavaScript runs

Fix: Break up long tasks; defer non-critical JavaScript to post-hydration

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Usability (3)

Layout shifts during page load

+3% bounce

Content movement causes mis-clicks on CTAs and form fields

Fix: Add width/height to images; reserve space for late-loading embeds

1 form field(s) without a label

+2% bounce

Screen readers skip unlabeled fields; autofill can't identify them; checkout abandonment spikes

Fix: Associate every input with a visible <label for="…">; add autocomplete attributes

Viewport disables user zoom

+2% bounce

Visitors with low vision can't read the page — and some jurisdictions treat this as a legal risk

Fix: Remove user-scalable=no; drop maximum-scale if it's below 2

Content (2)

No Open Graph tags

+2% bounce

Links shared on LinkedIn / Slack / Facebook show bare URLs — referral clicks drop

Fix: Add og:title, og:description, og:image, og:url to the page head

No structured data

+2% bounce

No rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices

Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)

Navigation (3)

39 link(s) with generic text ("click here", "read more")

+1% bounce

Screen-reader users navigating by link list see no context — and search engines can't infer relevance

Fix: Rewrite with descriptive phrases that identify the destination

No skip-to-content link

+1% bounce

Keyboard and screen-reader users must tab through the entire header on every page

Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element

5 broken link(s) on the page

+5% bounce

Clicks land on 404s — trust drops and the session often ends

Fix: Fix or remove the broken destinations surfaced on the Content tab

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

¥1,750 investment → ¥48/month returns + CNY 50,000,000 risk avoided

Payback period: > 2 years First-year ROI: -67%

Investment

¥1,750

5h · 5 findings

Monthly returns

¥48 /mo

~¥576 / year

Bandwidth savings ¥48

Regulatory risk avoided

CNY 50,000,000

if kept compliant

PIPL CNY 50,000,000

¥525 — in quick wins — start here for the fastest payback

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

¥1,750

5.0 developer hours at ¥350/hr

Based on China rates (¥350/hr)

Quick wins

¥525 3 fixes in ~90 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions

Custom rate

¥ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

¥4,166,715 / month at risk

~¥50,000,576 / year if left unfixed

Compliance Risk

¥50,000,000

PIPL

No privacy policy link detected
PIPL: CNY 100,000 – CNY 50,000,000
Trackers detected but no cookie policy found
PIPL: CNY 100,000 – CNY 50,000,000
Trackers detected but no privacy policy found
PIPL: CNY 100,000 – CNY 50,000,000

+1 more

Bandwidth Waste

¥48 /mo

83946.5 MB/mo × 0.571 CNY/GB

Optimize transfer: save ~8.4 MB per page load
Saves ¥48/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Monthly visitors

Unique monthly visitors from your analytics

Conversion rate (%)

Purchases, signups, or key actions

Avg. order value

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue

Current bounce (est.)

After fixes (est.)

Estimated bounce reduction

Fix 5 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

3.79 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

33.93 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

1.80 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.190

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

19.04 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

59.20 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
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fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main_img_1.png	0.0 ms	926.9 KiB
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fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main4_bg.jpg	0.0 ms	348.0 KiB
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fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/222.png	0.0 ms	149.0 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	0.0 ms	137.1 KiB
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fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main5_bg.jpg	0.0 ms	38.3 KiB
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fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.png	0.0 ms	34.3 KiB
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fudan.edu.cn/_js/jquery-3.4.1.min.js	0.0 ms	30.3 KiB
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fudan.edu.cn/_upload/site/00/02/2/logo.png	0.0 ms	22.8 KiB
/_upload/article/images/1e/91/2e106fc74e4480f6a468720f90a...	0.0 ms	21.7 KiB
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fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/video.css	0.0 ms	10.4 KiB
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fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/share_icon.png	0.0 ms	9.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/libs/jquery.sudy.js	0.0 ms	7.9 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.jpg	0.0 ms	7.9 KiB
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fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/bszsb2.png	0.0 ms	4.7 KiB
/_upload/article/images/e1/87/fcf3b3d64774b9c107b91e1f286...	0.0 ms	4.7 KiB
/_upload/article/images/51/65/44a74b0d4a36927a6e3f08cc66d...	0.0 ms	4.7 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/ajax-loader.gif	0.0 ms	4.4 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/111.png	0.0 ms	4.3 KiB
fudan.edu.cn/_js/jquery-migrate.min.js	0.0 ms	4.0 KiB
/_upload/tpl/00/04/4/template4/fancybox/js/jquery.fancybo...	0.0 ms	3.8 KiB
fudan.edu.cn/_js/_portletPlugs/simpleNews/css/simplenews.css	0.0 ms	3.8 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/slickarrow2.png	0.0 ms	3.4 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Filter.js	0.0 ms	3.1 KiB
fudan.edu.cn/_js/jquery.sudy.wp.visitcount.js	0.0 ms	2.8 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/style.css	0.0 ms	2.8 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/mobile.css	0.0 ms	2.4 KiB
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/jquery.easing.1.3.js	0.0 ms	2.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/comcus.js	0.0 ms	2.3 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/view/selec...	0.0 ms	2.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.css	0.0 ms	2.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/view/image_view.js	0.0 ms	2.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/shjbzx2.png	0.0 ms	2.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new2_icon.png	0.0 ms	2.0 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Fliter.css	0.0 ms	1.9 KiB
fudan.edu.cn/_js/_portletPlugs/sudyNavi/jquery.sudyNav.js	0.0 ms	1.8 KiB
fudan.edu.cn/_js/_portletPlugs/datepicker/css/datepicker.css	0.0 ms	1.8 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/app.js	0.0 ms	1.7 KiB
/_upload/tpl/00/0e/14/template14/static/api/css/slide_sha...	0.0 ms	1.6 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/play.png	0.0 ms	1.6 KiB
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/css/jquery.fancybox.css	0.0 ms	1.5 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/view/slide...	0.0 ms	1.4 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/news_times_icon.png	0.0 ms	1.4 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/img/menu-icon-arrow-white.png	0.0 ms	1.4 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.css	0.0 ms	1.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/css/share_style1_24.css	0.0 ms	1.2 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/component/...	0.0 ms	1.1 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/view/share...	0.0 ms	1.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/mousewheel.js	0.0 ms	1.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/view/view_base.js	0.0 ms	1.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.js	0.0 ms	965 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/api_base.js	0.0 ms	934 B
fudan.edu.cn/_js/_portletPlugs/sudyNavi/css/sudyNav.css	0.0 ms	876 B
fudan.edu.cn/_js/_portletPlugs/winfloat/js/winfloat.js	0.0 ms	864 B
fudan.edu.cn/_js/jquery.min.js	0.0 ms	832 B
fudan.edu.cn/_js/_portletPlugs/datepicker/js/datepicker_lang_HK.js	0.0 ms	739 B
/_upload/tpl/00/0e/14/template14/static/api/js/share/shar...	0.0 ms	728 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/common.js	0.0 ms	659 B
/_upload/tpl/00/0e/14/template14/static/api/js/share/slid...	0.0 ms	656 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/image_api.js	0.0 ms	647 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/select_api.js	0.0 ms	598 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new11_icon.png	0.0 ms	566 B
fudan.edu.cn/_css/_system/system.css	0.0 ms	316 B
fudan.edu.cn/_upload/site/00/02/2/style/5/5.css	0.0 ms	302 B
/_upload/tpl/00/0e/14/template14/static/api/js/trans/logg...	0.0 ms	298 B
fudan.edu.cn/_upload/site/1/style/1/1.css	0.0 ms	284 B
fudan.edu.cn/_visitcount?siteId=2&type=1&columnId=2	0.0 ms	279 B
fudan.edu.cn/_visitcount?siteId=2&type=2&columnId=591	0.0 ms	204 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]

items: [map[node:map[type:text value:Total] score:0.190014] map[node:map[boundingRect:map[bottom:1124 height:851 left:0 right:412 top:273 width:412] lhId:page-27-DIV nodeLabel:新闻聚焦复旦大学第十四届读书节开幕，新教育全民阅读活动启动 2026-04-21 【旦园光盒】复旦强基就读体验如何？物理、生科、中文强基学子这么说 20… path:1,HTML,1,BODY,2,DIV,10,DIV selector:body.main > div.body_b > div#container-1 snippet:<div class="wrapper main1" id="container-1"> type:node] score:0.190014]]

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:69.868 source:map[column:29748 line:2 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:57.966 source:map[column:51353 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:2.075 source:map[column:52029 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:0.336 source:map[column:52087 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:0.288 source:map[column:52151 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:6.485 source:map[column:51375 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:2.718 source:map[column:53930 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/84/5d/bb097d034f2991806a82d1a132b...	13.1 MiB	12.8 MiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb61333...	1.5 MiB	1.5 MiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/45/fb/cf3164084befb27bd698441c4e6...	1.3 MiB	1.2 MiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/e8/93/f82c244042569297553c48b425d...	941.5 KiB	930.4 KiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/fc/47/24ee4a8344efac0073ae329087a...	939.8 KiB	903.4 KiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/d3/64/d371e15e4d3eaf1af023a0a93c3...	906.1 KiB	869.7 KiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/64/64/50e511e14427b11837cd6b7ce72...	445.8 KiB	408.4 KiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/22/36/c0c049cd48029cd47cb35b1fbfd...	321.0 KiB	308.7 KiB
复旦百科建筑人物书屋教授别墅春日的清晨，一场大雨过后，绿意葱茏的复旦校园弥漫着清新的气息。复旦教师第九宿舍东南侧，二幢红瓦黄墙的小楼，在薄雾中静静伫… `body.main > div.body_b > div#container-4`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main4_bg.jpg	397.1 KiB	173.9 KiB
div.news_imgs > div.imgs > a.active > img `div.news_imgs > div.imgs > a.active > img`	/_upload/article/images/96/10/cc48d21e43ef9d3fad304bc1296...	167.2 KiB	145.1 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/04/de/2b7fd2b146069e03920d1266828...	51.5 KiB	40.1 KiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/38/04/a6ef6cb04386a2482f05bf19945...	35.1 KiB	24.1 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1a/bd/e68ad4a04e1cada63dbceb1431b...	36.1 KiB	24.0 KiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/2d/d5/39aedf0e400daf3737df8b2392c...	31.2 KiB	20.8 KiB
div.head-left > div.sitelogo > a > img `div.head-left > div.sitelogo > a > img`	fudan.edu.cn/_upload/site/00/02/2/logo.png	22.5 KiB	19.7 KiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/1f/9b/9c59284d497c8c3b4ef01a9d605...	26.6 KiB	17.1 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/72/e8/9f9be39d4120802e985d9812b2d...	26.4 KiB	16.3 KiB
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/2a/c3/78d833ac4831b3b77aae007eccb...	72.6 KiB	14.0 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/8c/68/c97b8827435193412a5e0610fb0...	26.9 KiB	13.3 KiB
视觉复旦 “星火”生生不息心有所信，方能行远。查看更多 `body.main > div.body_b > div#container-6 > div.inner`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.png	34.0 KiB	9.6 KiB
视觉复旦 “星火”生生不息心有所信，方能行远。查看更多 `body.main > div.body_b > div#container-6`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.jpg	32.8 KiB	7.8 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/b6/87/fe633c6844e4a8e728dd61641dd...	14.0 KiB	6.9 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/80/af/47e69d734dc6a3de779064f2c97...	13.3 KiB	6.3 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/91/d9/cf35b3d64fc9a75d3008cabd5da...	12.6 KiB	5.7 KiB
div.shares > ul > li.i9 > a `div.shares > ul > li.i9 > a`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/share_icon.png	9.0 KiB	4.6 KiB
p.copyright > span > a > img `p.copyright > span > a > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/bszsb2.png	4.4 KiB	4.4 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/9b/47/fcd4652f42bbaeb885f0546589f...	11.4 KiB	4.3 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:385.465 label:Time to first byte subpart:timeToFirstByte] map[duration:1557.533 label:Resource load delay subpart:resourceLoadDelay] map[duration:2520.1 label:Resource load duration subpart:resourceLoadDuration] map[duration:25.35 label:Element render delay subpart:elementRenderDelay]]

lhId: page-1-IMG

nodeLabel: div.focus-container > div.focus-item > a > img

path: 1,HTML,1,BODY,2,DIV,7,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG

selector: div.focus-container > div.focus-item > a > img

snippet: <img src="/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb613336/8eace7ad-43b9-4…" data-bd-imgshare-binded="1">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-1-IMG

nodeLabel: div.focus-container > div.focus-item > a > img

path: 1,HTML,1,BODY,2,DIV,7,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG

selector: div.focus-container > div.focus-item > a > img

snippet: <img src="/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb613336/8eace7ad-43b9-4…" data-bd-imgshare-binded="1">

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
fudan.edu.cn/	http/1.1
fudan.edu.cn/_css/_system/system.css	http/1.1
fudan.edu.cn/_upload/site/1/style/1/1.css	http/1.1
fudan.edu.cn/_upload/site/00/02/2/style/5/5.css	http/1.1
fudan.edu.cn/_js/_portletPlugs/sudyNavi/css/sudyNav.css	http/1.1
fudan.edu.cn/_js/_portletPlugs/datepicker/css/datepicker.css	http/1.1
fudan.edu.cn/_js/_portletPlugs/simpleNews/css/simplenews.css	http/1.1
fudan.edu.cn/_js/jquery.min.js	http/1.1
fudan.edu.cn/_js/jquery.sudy.wp.visitcount.js	http/1.1
fudan.edu.cn/_js/_portletPlugs/winfloat/js/winfloat.js	http/1.1
fudan.edu.cn/_js/_portletPlugs/sudyNavi/jquery.sudyNav.js	http/1.1
fudan.edu.cn/_js/_portletPlugs/datepicker/js/jquery.datepicker.js	http/1.1
fudan.edu.cn/_js/_portletPlugs/datepicker/js/datepicker_lang_HK.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/common.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.min.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/style.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/mobile.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/media.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/video.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	http/1.1
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/css/jquery.fancybox.css	http/1.1
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/flowplayer-3.1.1.min.js	http/1.1
/_upload/tpl/00/04/4/template4/fancybox/js/jquery.fancybo...	http/1.1
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/jquery.easing.1.3.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main_img_1.png	http/1.1
fudan.edu.cn/_upload/site/00/02/2/logo.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/111.png	http/1.1
/_upload/article/images/af/cc/70dd3e6d4769bfc80ae64728c7f...	http/1.1
/_upload/article/images/9e/53/d3fe76c743e39931cf233cb82e7...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/222.png	http/1.1
/_upload/article/images/1f/9b/9c59284d497c8c3b4ef01a9d605...	http/1.1
/_upload/article/images/84/5d/bb097d034f2991806a82d1a132b...	http/1.1
/_upload/article/images/38/04/a6ef6cb04386a2482f05bf19945...	http/1.1
/_upload/article/images/2d/d5/39aedf0e400daf3737df8b2392c...	http/1.1
/_upload/article/images/22/36/c0c049cd48029cd47cb35b1fbfd...	http/1.1
/_upload/article/images/e8/93/f82c244042569297553c48b425d...	http/1.1
/_upload/article/images/80/af/47e69d734dc6a3de779064f2c97...	http/1.1
/_upload/article/images/b6/87/fe633c6844e4a8e728dd61641dd...	http/1.1
/_upload/article/images/91/d9/cf35b3d64fc9a75d3008cabd5da...	http/1.1
/_upload/article/images/9b/47/fcd4652f42bbaeb885f0546589f...	http/1.1
/_upload/article/images/96/10/cc48d21e43ef9d3fad304bc1296...	http/1.1
/_upload/article/images/ee/34/f1ea3d0c4b359d0d0dc45989597...	http/1.1
/_upload/article/images/e4/a4/a9682810451ba0eee789c138b14...	http/1.1
/_upload/article/images/1f/30/5d2f956b4cef8496c52951b9d75...	http/1.1
/_upload/article/images/70/b5/046763ab4029bceca2ec1e300e0...	http/1.1
/_upload/article/images/19/ea/8223132c4959a06db1b01b23a57...	http/1.1
/_upload/article/images/8c/68/c97b8827435193412a5e0610fb0...	http/1.1
/_upload/article/images/1a/bd/e68ad4a04e1cada63dbceb1431b...	http/1.1
/_upload/article/images/72/e8/9f9be39d4120802e985d9812b2d...	http/1.1
/_upload/article/images/04/de/2b7fd2b146069e03920d1266828...	http/1.1
/_upload/article/images/d5/72/d8f996104b1cbd71887d6521286...	http/1.1
/_upload/article/images/00/78/9069bce94527a8f5b5cc8f9afad...	http/1.1
/_upload/article/images/2c/62/86206da440d3b481576ffadc1a1...	http/1.1
/_upload/article/images/c2/8e/5aed1a8f49598e05ea87adec6c5...	http/1.1
/_upload/article/images/1e/91/2e106fc74e4480f6a468720f90a...	http/1.1
/_upload/article/images/0a/47/0448de9a470f8005736ba8caf07...	http/1.1
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/_upload/article/images/6e/1e/060bc6cc4365bc23af7f7350fc8...	http/1.1
/_upload/article/images/24/62/3c2dffb348faa081b8e9af2a4a0...	http/1.1
/_upload/article/images/51/65/44a74b0d4a36927a6e3f08cc66d...	http/1.1
/_upload/article/images/eb/e3/7696a1c9402b9e1a11febdbfe12...	http/1.1
/_upload/article/images/97/a5/8dec89dd4fd4ab0cfb7c014f55a...	http/1.1
/_upload/article/images/e1/87/fcf3b3d64774b9c107b91e1f286...	http/1.1
/_upload/article/images/aa/fe/958eac154c989586162613b31f8...	http/1.1
/_upload/article/images/b1/14/2eb3b6a84ed0a8c463962c2f442...	http/1.1
/_upload/article/images/5f/d3/15eaebcb482faaa2f215e978cee...	http/1.1
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/_upload/article/images/99/22/8e0f840a438dbbbe35693233087...	http/1.1
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/_upload/article/images/21/a8/a40c61b24a4081fad59d1dca911...	http/1.1
fudan.edu.cn/_css/_system/system_editor.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/bszsb2.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/shjbzx2.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/main.js?var=2.0	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/mousewheel.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/comcus.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/app.js	http/1.1
fudan.edu.cn/_visitcount?siteId=2&type=1&columnId=2	http/1.1
fudan.edu.cn/_js/jquery-3.4.1.min.js	http/1.1
fudan.edu.cn/_js/jquery-migrate.min.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/libs/jquery.sudy.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Fliter.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/style.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Filter.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/search.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/share.js?v...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/img/menu-icon-arrow-white.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/news_times_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new2_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main4_bg.jpg	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main5_bg.jpg	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.jpg	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/play.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/foot_logo.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/share_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new11_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/ajax-loader.gif	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/slickarrow2.png	http/1.1
/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb61333...	http/1.1
/_upload/article/images/64/64/50e511e14427b11837cd6b7ce72...	http/1.1
/_upload/article/images/fc/47/24ee4a8344efac0073ae329087a...	http/1.1
/_upload/article/images/d3/64/d371e15e4d3eaf1af023a0a93c3...	http/1.1
/_upload/article/images/45/fb/cf3164084befb27bd698441c4e6...	http/1.1
fudan.edu.cn/_s2/dhxglj/list.psp	http/1.1
/_upload/article/images/75/85/7af62f54461595822213d4ca65c...	http/1.1
/_upload/article/images/00/99/5746f09943fe890af4a03ef2db8...	http/1.1
/_upload/article/images/76/5a/6e4d47d4461c80762e38cebb61a...	http/1.1
/_upload/article/images/ba/27/06ff4c2f46eb9fb6e1dd3dfa128...	http/1.1
/_upload/article/images/bc/6d/f251444d4d90b8ebfd00ef61a34...	http/1.1
/_upload/article/images/8b/69/7a8592114f028fa9f7b32d8c353...	http/1.1
fudan.edu.cn/_visitcount?siteId=2&type=2&columnId=591	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/share/shar...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/view/share...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/share/slid...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/view/slide...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/select_api.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/view/selec...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/image_api.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/view/image_view.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/base/tangr...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/api_base.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/view/view_base.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/component/...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/css/share_style1_24.css	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/css/slide_sha...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/trans/logg...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/favicon.ico	http/1.1

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	137.1 KiB	1.7 s
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/jquery.easing.1.3.js	2.3 KiB	457 ms
/_upload/tpl/00/04/4/template4/fancybox/js/jquery.fancybo...	3.8 KiB	607 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.min.js	6.0 KiB	607 ms
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/flowplayer-3.1.1.min.js	6.4 KiB	607 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/common.js	659 B	457 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.js	965 B	457 ms
fudan.edu.cn/_js/_portletPlugs/datepicker/js/datepicker_lang_HK.js	739 B	457 ms
fudan.edu.cn/_js/_portletPlugs/datepicker/js/jquery.datepicker.js	5.4 KiB	607 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/style.css	14.3 KiB	1.2 s
fudan.edu.cn/_js/_portletPlugs/sudyNavi/jquery.sudyNav.js	1.8 KiB	457 ms
fudan.edu.cn/_js/_portletPlugs/winfloat/js/winfloat.js	864 B	457 ms
fudan.edu.cn/_js/jquery.sudy.wp.visitcount.js	2.8 KiB	457 ms
fudan.edu.cn/_js/jquery.min.js	832 B	457 ms
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/css/jquery.fancybox.css	1.5 KiB	457 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/video.css	10.4 KiB	907 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/media.css	5.1 KiB	607 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/mobile.css	2.4 KiB	457 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.css	1.3 KiB	457 ms
fudan.edu.cn/_css/_system/system_editor.css	4.9 KiB	607 ms
fudan.edu.cn/_js/jquery-3.4.1.min.js	30.3 KiB
fudan.edu.cn/_js/_portletPlugs/simpleNews/css/simplenews.css	3.8 KiB	607 ms
fudan.edu.cn/_js/_portletPlugs/datepicker/css/datepicker.css	1.8 KiB	457 ms
fudan.edu.cn/_js/_portletPlugs/sudyNavi/css/sudyNav.css	876 B	457 ms
fudan.edu.cn/_js/jquery-migrate.min.js	4.0 KiB
fudan.edu.cn/_upload/site/00/02/2/style/5/5.css	302 B	457 ms
fudan.edu.cn/_upload/site/1/style/1/1.css	284 B	457 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/search.js	7.7 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.css	2.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/libs/jquery.sudy.js	7.9 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/style.css	2.8 KiB
fudan.edu.cn/_css/_system/system.css	316 B	157 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Fliter.css	1.9 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Filter.js	3.1 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

Element	Layout shift score
新闻聚焦复旦大学第十四届读书节开幕，新教育全民阅读活动启动 2026-04-21 【旦园光盒】复旦强基就读体验如何？物理、生科、中文强基学子这么说 20… `body.main > div.body_b > div#container-1`	0.190

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 50 ms 2.1 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/style.css	14.3 KiB	2.1 KiB

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 50 ms 7.5 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/libs/jquery.sudy.js	7.6 KiB	3.2 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/main.js?var=2.0	5.3 KiB	2.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/search.js	7.3 KiB	2.0 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 50 ms 10.1 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/video.css	10.1 KiB	10.1 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 910 ms 140.7 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	136.7 KiB	119.4 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/base/tangr...	35.2 KiB	21.3 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	6.4 s	11 ms	0.0 ms
fudan.edu.cn/_js/jquery-3.4.1.min.js	3.6 s	766 ms	14 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	2.5 s	2.1 s	67 ms
fudan.edu.cn/	2.3 s	13 ms	7.6 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/view/view_base.js	159 ms	145 ms	0.6 ms
hm.baidu.com/hm.js?2358de8fcde33676f65b406ffd4460cc	146 ms	127 ms	4.5 ms
/_upload/tpl/00/0e/14/template14/static/api/js/base/tangr...	83 ms	60 ms	14 ms
/_upload/tpl/00/0e/14/template14/static/api/js/share.js?v...	74 ms	56 ms	13 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Other	10.0 s
Script Evaluation	3.4 s
Style & Layout	1.2 s
Rendering	540 ms
Parse HTML & CSS	207 ms
Script Parsing & Compilation	170 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in the main frame.	Actionable

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/_upload/article/images/84/5d/bb097d034f2991806a82d1a132b...	12.8 MiB
/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb61333...	1.5 MiB
/_upload/article/images/1f/30/5d2f956b4cef8496c52951b9d75...	1.5 MiB
/_upload/article/images/45/fb/cf3164084befb27bd698441c4e6...	1.3 MiB
/_upload/article/images/e8/93/f82c244042569297553c48b425d...	941.8 KiB
/_upload/article/images/fc/47/24ee4a8344efac0073ae329087a...	940.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main_img_1.png	926.9 KiB
/_upload/article/images/d3/64/d371e15e4d3eaf1af023a0a93c3...	906.3 KiB
/_upload/article/images/ee/34/f1ea3d0c4b359d0d0dc45989597...	752.9 KiB
/_upload/article/images/e4/a4/a9682810451ba0eee789c138b14...	650.0 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/8c/68/c97b8827435193412a5e0610fb0...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/8c/68/c97b8827435193412a5e0610fb0...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1a/bd/e68ad4a04e1cada63dbceb1431b...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/04/de/2b7fd2b146069e03920d1266828...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/04/de/2b7fd2b146069e03920d1266828...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/72/e8/9f9be39d4120802e985d9812b2d...
div.head-left > div.sitelogo > a > img `div.head-left > div.sitelogo > a > img`	fudan.edu.cn/_upload/site/00/02/2/logo.png
p.copyright > span > a > img `p.copyright > span > a > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/shjbzx2.png
p.copyright > span > a > img `p.copyright > span > a > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/bszsb2.png

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Document request latency

●Optimize DOM size

●Font display

●Optimize viewport for mobile

●Avoid long main-thread tasks 16 long tasks found

●Avoid non-composited animations 19 animated elements found

●Network Requests

●Network Round Trip Times 240 ms

●Server Backend Latencies 70 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 100 ms

○INP breakdown

○User Timing marks and measures

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
14 `li.news > div.news_box > div.news_date > div.news_year`
16：00 `div.news_wz > div.news_con > div.news_text > p.t1`
14 `li.news > div.news_box > div.news_date > div.news_year`
13 `li.news > div.news_box > div.news_date > div.news_year`
15：30-17：30 `div.news_wz > div.news_con > div.news_text > p.t1`

These are opportunities to improve the legibility of your content.

Internationalization and localization

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These are opportunities to improve the interpretation of your content by users in different locales.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.head-left > div.sitelogo > a > img `div.head-left > div.sitelogo > a > img`
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_imgs > div.imgs > a.active > img `div.news_imgs > div.imgs > a.active > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.focus > div.focus-container > div.focus-item > a `div.focus > div.focus-container > div.focus-item > a`
div.focus > div.focus-container > div.focus-item > a `div.focus > div.focus-container > div.focus-item > a`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
div.shares > ul > li.i1 > a `div.shares > ul > li.i1 > a`
div.shares > ul > li.i2 > a `div.shares > ul > li.i2 > a`
div.shares > ul > li.i3 > a `div.shares > ul > li.i3 > a`
div.shares > ul > li.i4 > a `div.shares > ul > li.i4 > a`
div.shares > ul > li.i5 > a `div.shares > ul > li.i5 > a`
div.shares > ul > li.i6 > a `div.shares > ul > li.i6 > a`
div.shares > ul > li.i7 > a `div.shares > ul > li.i7 > a`
div.shares > ul > li.i8 > a `div.shares > ul > li.i8 > a`
div.shares > ul > li.i9 > a `div.shares > ul > li.i9 > a`
div.foot-con > p.copyright > span > a `div.foot-con > p.copyright > span > a`
div.foot-con > p.copyright > span > a `div.foot-con > p.copyright > span > a`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
教授别墅春日的清晨，一场大雨过后，绿意葱茏的复旦校园弥漫着清新的气息。复旦教师第九宿舍东南侧，二幢红瓦黄墙的小楼，在薄雾中静静伫立，似在迎候着昔日的主人。二… `div > div.news_conbox > div.news_con > ul.news_list`

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
教授别墅春日的清晨，一场大雨过后，绿意葱茏的复旦校园弥漫着清新的气息。复旦教师第九宿舍东南侧，二幢红瓦黄墙的小楼，在薄雾中静静伫立，似在迎候着昔日的主人。二… `ul.news_list > div.slick-list > div.slick-track > li.news`
松德堂走进复旦大学上海医学院的东院，有一幢在众多大楼环抱中显得颇不显眼的楼房，它就是建造于1936年的“松德堂”，为纪念上海著名爱国实业家项松茂先生而命名的… `ul.news_list > div.slick-list > div.slick-track > li.news`
中山医院3号楼具有中国建筑特色、呈现城垣城楼雄姿的中山医院3号楼，是1937年4月建成的。它是上世纪三十年代由中国人自己创设的一所规模较大的综合性医院———… `ul.news_list > div.slick-list > div.slick-track > li.news`
上医大一号楼上医大一号楼自1937年落成后，一代代的上医人都喜欢将这具有东方艺术宫殿式建筑的大楼作为背景，拍下那令人难以忘怀的毕业照。它也是上医人踏上为人群… `ul.news_list > div.slick-list > div.slick-track > li.news`
教授别墅春日的清晨，一场大雨过后，绿意葱茏的复旦校园弥漫着清新的气息。复旦教师第九宿舍东南侧，二幢红瓦黄墙的小楼，在薄雾中静静伫立，似在迎候着昔日的主人。二… `ul.news_list > div.slick-list > div.slick-track > li.news`
松德堂走进复旦大学上海医学院的东院，有一幢在众多大楼环抱中显得颇不显眼的楼房，它就是建造于1936年的“松德堂”，为纪念上海著名爱国实业家项松茂先生而命名的… `ul.news_list > div.slick-list > div.slick-track > li.news`

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
head > meta `head > meta`

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●Buttons have an accessible name

●Document has a `<title>` element

●Links are distinguishable without relying on color.

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`[aria-*]` attributes match their roles

○`button`, `link`, and `menuitem` elements have accessible names

○ARIA attributes are used as specified for the element's role

○Deprecated ARIA roles were not used

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○`[aria-hidden="true"]` elements do not contain focusable descendents

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements use only permitted ARIA attributes

○`[role]`s have all required `[aria-*]` attributes

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○`[role]` values are valid

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○`[aria-*]` attributes have valid values

○`[aria-*]` attributes are valid and not misspelled

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has a valid value for its `[lang]` attribute

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
div#banner > div.inner > div.banner_nav2 > img `div#banner > div.inner > div.banner_nav2 > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/222.png	100 x 456 (0.22)	1920 x 456 (4.21)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/ee/34/f1ea3d0c4b359d0d0dc45989597...	320 x 954 (0.34)	780 x 954 (0.82)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/e4/a4/a9682810451ba0eee789c138b14...	320 x 954 (0.34)	780 x 954 (0.82)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/1f/30/5d2f956b4cef8496c52951b9d75...	320 x 954 (0.34)	780 x 954 (0.82)
body.main > div.body_b > div.banner_nav > img `body.main > div.body_b > div.banner_nav > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/111.png	100 x 312 (0.32)	1920 x 312 (6.15)
ul > li.i3 > div.con > img `ul > li.i3 > div.con > img`	/_upload/article/images/9e/53/d3fe76c743e39931cf233cb82e7...	90 x 599 (0.15)	635 x 599 (1.06)
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/ce/e7/02286a304292a564176a3a51bad...	320 x 600 (0.53)	600 x 600 (1.00)
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/99/22/8e0f840a438dbbbe35693233087...	320 x 600 (0.53)	600 x 600 (1.00)
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/46/1d/e5476cb9470eb4427679af3419c...	320 x 600 (0.53)	600 x 600 (1.00)
div.news_imgs > div.imgs > a.active > img `div.news_imgs > div.imgs > a.active > img`	/_upload/article/images/96/10/cc48d21e43ef9d3fad304bc1296...	196 x 220 (0.89)	490 x 599 (0.82)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/70/b5/046763ab4029bceca2ec1e300e0...	320 x 599 (0.53)	490 x 599 (0.82)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/42/93/9b2dd3da46f5ac13d935555fefa...	320 x 385 (0.83)	300 x 385 (0.78)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/19/ea/8223132c4959a06db1b01b23a57...	320 x 320 (1.00)	290 x 320 (0.91)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d5/72/d8f996104b1cbd71887d6521286...	320 x 239 (1.34)	314 x 239 (1.31)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d5/72/d8f996104b1cbd71887d6521286...	320 x 239 (1.34)	314 x 239 (1.31)
ul > li.i5 > div.con > img `ul > li.i5 > div.con > img`	/_upload/article/images/dd/c0/65220e42441db15b058d29b81d1...	90 x 260 (0.35)	260 x 260 (1.00)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0b/46/9b7264524fabbd2c1d88755d6a7...	320 x 239 (1.34)	281 x 239 (1.18)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/04/a0/897d9d814203a216741edb72ac5...	320 x 320 (1.00)	209 x 320 (0.65)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1c/fa/9888c5ef4e12989af4e64f5b496...	320 x 239 (1.34)	263 x 239 (1.10)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1c/fa/9888c5ef4e12989af4e64f5b496...	320 x 239 (1.34)	263 x 239 (1.10)
ul > li.i7 > div.con > img `ul > li.i7 > div.con > img`	/_upload/article/images/21/a8/a40c61b24a4081fad59d1dca911...	90 x 239 (0.38)	254 x 239 (1.06)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0b/b4/ad85ac2c4a438497e78fb1bd577...	320 x 239 (1.34)	248 x 239 (1.04)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0b/b4/ad85ac2c4a438497e78fb1bd577...	320 x 239 (1.34)	248 x 239 (1.04)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/57/79/3f42359043e9989e9fd49f5caeb...	320 x 239 (1.34)	243 x 239 (1.02)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0a/47/0448de9a470f8005736ba8caf07...	320 x 239 (1.34)	242 x 239 (1.01)
ul > li.i1 > div.con > img `ul > li.i1 > div.con > img`	/_upload/article/images/af/cc/70dd3e6d4769bfc80ae64728c7f...	90 x 240 (0.38)	240 x 240 (1.00)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/02/34/9e12616943c3938223a5acb0f14...	320 x 240 (1.33)	240 x 240 (1.00)
ul > li.i2 > div.con > img `ul > li.i2 > div.con > img`	/_upload/article/images/70/e0/70b9885940608c92d348d955e5e...	90 x 240 (0.38)	240 x 240 (1.00)
ul > li.i4 > div.con > img `ul > li.i4 > div.con > img`	/_upload/article/images/b6/63/52276fed4aaa981636295b6aa4a...	90 x 240 (0.38)	240 x 240 (1.00)
ul > li.i6 > div.con > img `ul > li.i6 > div.con > img`	/_upload/article/images/b0/c9/99a34e6f4d9ab5e128fc45d2484...	90 x 240 (0.38)	240 x 240 (1.00)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/83/29/acf8ad1a46208606142e8d712ab...	320 x 239 (1.34)	237 x 239 (0.99)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/73/00/49eb85014bea997e88c187e7174...	320 x 195 (1.64)	287 x 195 (1.47)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/3c/67/978486e3402f819b9d84d1aeae4...	320 x 239 (1.34)	230 x 239 (0.96)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/24/62/3c2dffb348faa081b8e9af2a4a0...	320 x 239 (1.34)	225 x 239 (0.94)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/fc/b3/54a268d244f196d4991030013ae...	320 x 239 (1.34)	198 x 239 (0.83)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f5/a2/d32d5d7e4a4fa47f6471d005e7e...	320 x 238 (1.34)	198 x 238 (0.83)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/60/c2/e33445f449dbb02440d8e52543e...	320 x 239 (1.34)	185 x 239 (0.77)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1e/91/2e106fc74e4480f6a468720f90a...	320 x 239 (1.34)	182 x 239 (0.76)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1e/91/2e106fc74e4480f6a468720f90a...	320 x 239 (1.34)	182 x 239 (0.76)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f8/7b/7c299d714fd4b71955d4612abc6...	320 x 240 (1.33)	180 x 240 (0.75)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/a2/a0/d1071822411abfda86d9145c3cc...	320 x 239 (1.34)	179 x 239 (0.75)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/b8/ac/601de794475f8466900f972193e...	320 x 239 (1.34)	178 x 239 (0.74)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/00/78/9069bce94527a8f5b5cc8f9afad...	320 x 239 (1.34)	176 x 239 (0.74)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/6e/1e/060bc6cc4365bc23af7f7350fc8...	320 x 239 (1.34)	176 x 239 (0.74)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/12/5b/5abf57834616876b38c41e4adc8...	320 x 239 (1.34)	173 x 239 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/06/ec/848c23f04ae68c67c1fc3a9e21a...	320 x 239 (1.34)	173 x 239 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/aa/fe/958eac154c989586162613b31f8...	320 x 238 (1.34)	172 x 238 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/5f/d3/15eaebcb482faaa2f215e978cee...	320 x 238 (1.34)	172 x 238 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/b1/14/2eb3b6a84ed0a8c463962c2f442...	320 x 239 (1.34)	171 x 239 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/2c/62/86206da440d3b481576ffadc1a1...	320 x 239 (1.34)	169 x 239 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/02/56/baefab8c4a65ad543baf0319077...	320 x 239 (1.34)	169 x 239 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/ef/b7/7d755e5b4d05a4b0843989939a2...	320 x 238 (1.34)	169 x 238 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/ed/6f/fc39d63942c2b30d0e227d667eb...	320 x 239 (1.34)	168 x 239 (0.70)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/e1/87/fcf3b3d64774b9c107b91e1f286...	320 x 239 (1.34)	168 x 239 (0.70)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/98/8d/ea6569394429b85f494b2bf69ef...	320 x 238 (1.34)	168 x 238 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/eb/e3/7696a1c9402b9e1a11febdbfe12...	320 x 239 (1.34)	167 x 239 (0.70)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/97/a5/8dec89dd4fd4ab0cfb7c014f55a...	320 x 239 (1.34)	166 x 239 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/8a/dc/cafd0fed4749a1607f3deed4741...	320 x 238 (1.34)	165 x 238 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/dd/74/e993c70946ee9fdffc6ccf96a2d...	320 x 239 (1.34)	164 x 239 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/64/d2/9521558e45c79db6542e6220680...	320 x 238 (1.34)	164 x 238 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/51/65/44a74b0d4a36927a6e3f08cc66d...	320 x 239 (1.34)	161 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/83/f9/7d86e77f4f1aae09ba974dc8d81...	320 x 239 (1.34)	161 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f7/d2/cad96c984eef8651d38dc14e071...	320 x 239 (1.34)	160 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f7/d2/cad96c984eef8651d38dc14e071...	320 x 239 (1.34)	160 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/66/3d/00ea53564d4ba0806a4bf7966a2...	320 x 239 (1.34)	160 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/ae/bf/b72a6c43471ca7f53729574c5f3...	320 x 239 (1.34)	160 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d4/9e/bdc049d648099840daf154366ea...	320 x 238 (1.34)	159 x 238 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d8/73/934cc70d476ca5c9ba5bd1597f5...	320 x 239 (1.34)	158 x 239 (0.66)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/75/85/7af62f54461595822213d4ca65c...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/00/99/5746f09943fe890af4a03ef2db8...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/76/5a/6e4d47d4461c80762e38cebb61a...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/ba/27/06ff4c2f46eb9fb6e1dd3dfa128...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/bc/6d/f251444d4d90b8ebfd00ef61a34...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/8b/69/7a8592114f028fa9f7b32d8c353...	320 x 121 (2.64)	263 x 121 (2.17)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/68/cb/714a98364748b2b680525fd9874...	320 x 171 (1.87)	114 x 171 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/71/96/4b15a263451cbbde4538380bf7e...	320 x 148 (2.16)	109 x 148 (0.74)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/70/84/361741d34231834b4f60d7ac5ec...	320 x 149 (2.15)	103 x 149 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f8/2e/5ad9496a4656931b03e83f0b902...	320 x 143 (2.24)	101 x 143 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/5d/00/fbc4e3254b2caa74b97d780fab9...	320 x 141 (2.27)	100 x 141 (0.71)

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Unload event listeners are deprecated and will be removed.	hm.baidu.com/hm.js?2358de8fcde33676f65b406ffd4460cc line 1, col 274

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
div#header > div.inner > div.mod > a.navi-aside-toggle `div#header > div.inner > div.mod > a.navi-aside-toggle`
< `div.inner > div.artpic_banner > div.focus > a.focus-navigation`
> `div.inner > div.artpic_banner > div.focus > a.focus-navigation`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.shares > ul > li.i1 > a `div.shares > ul > li.i1 > a`
微信 `ul > li.i1 > span > a`
div.shares > ul > li.i3 > a `div.shares > ul > li.i3 > a`
抖音 `ul > li.i3 > span > a`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
body.main > div#bdSharePopup_selectshare1776897990539box > div.bdselect_share_head > a.bdselect_share_dialog_close `body.main > div#bdSharePopup_selectshare1776897990539box > div.bdselect_share_head > a.bdselect_share_dialog_close`

To appear in search results, crawlers need access to your app.

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.head-left > div.sitelogo > a > img `div.head-left > div.sitelogo > a > img`
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_imgs > div.imgs > a.active > img `div.news_imgs > div.imgs > a.active > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Document has a valid `hreflang`

○robots.txt is valid

○Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

915 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

6.01 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

623 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.405

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

7.45 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

6.15 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
/_upload/article/images/84/5d/bb097d034f2991806a82d1a132b...	0.0 ms	12.8 MiB
/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb61333...	0.0 ms	1.5 MiB
/_upload/article/images/1f/30/5d2f956b4cef8496c52951b9d75...	0.0 ms	1.5 MiB
/_upload/article/images/45/fb/cf3164084befb27bd698441c4e6...	0.0 ms	1.3 MiB
/_upload/article/images/e8/93/f82c244042569297553c48b425d...	0.0 ms	941.8 KiB
/_upload/article/images/fc/47/24ee4a8344efac0073ae329087a...	0.0 ms	940.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main_img_1.png	0.0 ms	926.9 KiB
/_upload/article/images/d3/64/d371e15e4d3eaf1af023a0a93c3...	0.0 ms	906.3 KiB
/_upload/article/images/ee/34/f1ea3d0c4b359d0d0dc45989597...	0.0 ms	752.9 KiB
/_upload/article/images/e4/a4/a9682810451ba0eee789c138b14...	0.0 ms	650.0 KiB
/_upload/article/images/64/64/50e511e14427b11837cd6b7ce72...	0.0 ms	444.7 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main4_bg.jpg	0.0 ms	348.0 KiB
/_upload/article/images/22/36/c0c049cd48029cd47cb35b1fbfd...	0.0 ms	320.4 KiB
/_upload/article/images/9e/53/d3fe76c743e39931cf233cb82e7...	0.0 ms	177.9 KiB
/_upload/article/images/96/10/cc48d21e43ef9d3fad304bc1296...	0.0 ms	166.6 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/222.png	0.0 ms	149.0 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	0.0 ms	137.1 KiB
/_upload/article/images/42/93/9b2dd3da46f5ac13d935555fefa...	0.0 ms	128.3 KiB
/_upload/article/images/ce/e7/02286a304292a564176a3a51bad...	0.0 ms	118.7 KiB
/_upload/article/images/70/b5/046763ab4029bceca2ec1e300e0...	0.0 ms	109.3 KiB
/_upload/article/images/83/29/acf8ad1a46208606142e8d712ab...	0.0 ms	97.4 KiB
/_upload/article/images/c2/8e/5aed1a8f49598e05ea87adec6c5...	0.0 ms	93.7 KiB
/_upload/article/images/99/22/8e0f840a438dbbbe35693233087...	0.0 ms	89.7 KiB
/_upload/article/images/57/79/3f42359043e9989e9fd49f5caeb...	0.0 ms	84.1 KiB
/_upload/article/images/46/1d/e5476cb9470eb4427679af3419c...	0.0 ms	81.2 KiB
/_upload/article/images/2a/c3/78d833ac4831b3b77aae007eccb...	0.0 ms	72.6 KiB
/_upload/article/images/58/b2/951d8f494dc8b93155e129c1e29...	0.0 ms	62.0 KiB
/_upload/article/images/a6/a0/61bf29524e768c3d3b3c49609c8...	0.0 ms	61.7 KiB
/_upload/article/images/76/5a/6e4d47d4461c80762e38cebb61a...	0.0 ms	59.7 KiB
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Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

items: [map[node:map[type:text value:Total] score:0.405498] map[node:map[boundingRect:map[bottom:1596 height:1048 left:0 right:1350 top:547 width:1350] lhId:page-44-DIV nodeLabel:新闻聚焦复旦大学第十四届读书节开幕，新教育全民阅读活动启动人间四月天，正是读书时。 2026-04-21(88) 【旦园光盒】复旦强基就读体验如何？物理、… path:1,HTML,1,BODY,2,DIV,10,DIV selector:body.main > div.body_b > div#container-1 snippet:<div class="wrapper main1" id="container-1"> type:node] score:0.405498 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:547 height:321 left:0 right:1350 top:227 width:1350] lhId:page-12-IMG nodeLabel:div#banner > div.inner > div.banner_nav2 > img path:1,HTML,1,BODY,2,DIV,7,DIV,0,DIV,2,DIV,0,IMG selector:div#banner > div.inner > div.banner_nav2 > img snippet:<img src="/_upload/tpl/00/0e/14/template14/images/222.png" width="100%" data-bd-imgshare-binded="1"> type:node]]] type:subitems]]]

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:41.268 source:map[column:29748 line:2 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:35.48 source:map[column:51353 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:2.111 source:map[column:52029 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:0.324 source:map[column:52087 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:0.282 source:map[column:52151 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:0.972 source:map[column:51375 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:2.099 source:map[column:86511 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/84/5d/bb097d034f2991806a82d1a132b...	13.1 MiB	12.8 MiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb61333...	1.5 MiB	1.4 MiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/45/fb/cf3164084befb27bd698441c4e6...	1.3 MiB	1.2 MiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/e8/93/f82c244042569297553c48b425d...	941.5 KiB	924.9 KiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/fc/47/24ee4a8344efac0073ae329087a...	939.8 KiB	826.3 KiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/d3/64/d371e15e4d3eaf1af023a0a93c3...	906.1 KiB	792.5 KiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/64/64/50e511e14427b11837cd6b7ce72...	445.8 KiB	331.2 KiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/22/36/c0c049cd48029cd47cb35b1fbfd...	321.0 KiB	303.0 KiB
复旦百科建筑人物书屋东宫今天的复旦校园里，子彬院与燕园之间隔着一片萋萋芳草。当年，这里却是神秘而旖旎的女生寝室——“东宫”。“东宫”建于1928年，… `body.main > div.body_b > div#container-4`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main4_bg.jpg	397.1 KiB	173.9 KiB
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EN 复旦概况师资队伍人才培养科学研究机构设置校园生活留学复旦 `body.main > div.body_b > div#header`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/head_bg.png	17.3 KiB	17.2 KiB
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视觉复旦 “星火”生生不息心有所信，方能行远。相信，你的相信每一个真实奋斗的日子，历历在目。“博学而笃志，切问而近思”，是力行、是热爱、是探索。相信，你… `body.main > div.body_b > div#container-6 > div.inner`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.png	34.0 KiB	9.6 KiB
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视觉复旦 “星火”生生不息心有所信，方能行远。相信，你的相信每一个真实奋斗的日子，历历在目。“博学而笃志，切问而近思”，是力行、是热爱、是探索。相信，你… `body.main > div.body_b > div#container-6`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.jpg	32.8 KiB	7.8 KiB
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Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:449.104 label:Time to first byte subpart:timeToFirstByte] map[duration:1478.176 label:Resource load delay subpart:resourceLoadDelay] map[duration:2596.128 label:Resource load duration subpart:resourceLoadDuration] map[duration:59.817 label:Element render delay subpart:elementRenderDelay]]

lhId: page-1-IMG

nodeLabel: div.focus-container > div.focus-item > a > img

path: 1,HTML,1,BODY,2,DIV,7,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG

selector: div.focus-container > div.focus-item > a > img

snippet: <img src="/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb613336/8eace7ad-43b9-4…" data-bd-imgshare-binded="1">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-1-IMG

nodeLabel: div.focus-container > div.focus-item > a > img

path: 1,HTML,1,BODY,2,DIV,7,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG

selector: div.focus-container > div.focus-item > a > img

snippet: <img src="/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb613336/8eace7ad-43b9-4…" data-bd-imgshare-binded="1">

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
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fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/mousewheel.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/comcus.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/app.js	http/1.1
fudan.edu.cn/_visitcount?siteId=2&type=1&columnId=2	http/1.1
fudan.edu.cn/_js/jquery-3.4.1.min.js	http/1.1
fudan.edu.cn/_js/jquery-migrate.min.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/libs/jquery.sudy.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Fliter.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/style.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Filter.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/search.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/share.js?v...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/head_bg.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/icon_roles.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/sous.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/news_times_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new2_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main4_bg.jpg	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main5_bg.jpg	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.jpg	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/play.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new13_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new12_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/foot_logo.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/share_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/slide_next.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new11_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/ajax-loader.gif	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/slickarrow2.png	http/1.1
/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb61333...	http/1.1
/_upload/article/images/64/64/50e511e14427b11837cd6b7ce72...	http/1.1
/_upload/article/images/fc/47/24ee4a8344efac0073ae329087a...	http/1.1
/_upload/article/images/d3/64/d371e15e4d3eaf1af023a0a93c3...	http/1.1
/_upload/article/images/45/fb/cf3164084befb27bd698441c4e6...	http/1.1
fudan.edu.cn/_s2/dhxglj/list.psp	http/1.1
/_upload/article/images/75/85/7af62f54461595822213d4ca65c...	http/1.1
/_upload/article/images/00/99/5746f09943fe890af4a03ef2db8...	http/1.1
/_upload/article/images/76/5a/6e4d47d4461c80762e38cebb61a...	http/1.1
/_upload/article/images/ba/27/06ff4c2f46eb9fb6e1dd3dfa128...	http/1.1
/_upload/article/images/bc/6d/f251444d4d90b8ebfd00ef61a34...	http/1.1
/_upload/article/images/8b/69/7a8592114f028fa9f7b32d8c353...	http/1.1
fudan.edu.cn/_visitcount?siteId=2&type=2&columnId=591	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/share/shar...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/view/share...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/share/slid...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/view/slide...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/select_api.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/view/selec...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/image_api.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/view/image_view.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/base/tangr...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/api_base.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/view/view_base.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/component/...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/css/share_style1_24.css	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/css/slide_sha...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/trans/logg...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/favicon.ico	http/1.1

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	137.1 KiB	329 ms
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/jquery.easing.1.3.js	2.3 KiB	129 ms
/_upload/tpl/00/04/4/template4/fancybox/js/jquery.fancybo...	3.8 KiB	129 ms
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/flowplayer-3.1.1.min.js	6.4 KiB	169 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.min.js	6.0 KiB	169 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/common.js	659 B	129 ms
fudan.edu.cn/_js/_portletPlugs/datepicker/js/datepicker_lang_HK.js	739 B	129 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.js	965 B	129 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/style.css	14.3 KiB	249 ms
fudan.edu.cn/_js/_portletPlugs/datepicker/js/jquery.datepicker.js	5.4 KiB	169 ms
fudan.edu.cn/_js/_portletPlugs/sudyNavi/jquery.sudyNav.js	1.8 KiB	129 ms
fudan.edu.cn/_js/_portletPlugs/winfloat/js/winfloat.js	864 B	129 ms
fudan.edu.cn/_js/jquery.sudy.wp.visitcount.js	2.8 KiB	129 ms
fudan.edu.cn/_js/jquery.min.js	832 B	129 ms
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/css/jquery.fancybox.css	1.5 KiB	129 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/video.css	10.4 KiB	209 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/media.css	5.1 KiB	169 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/mobile.css	2.4 KiB	129 ms
fudan.edu.cn/_css/_system/system_editor.css	4.9 KiB	169 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.css	1.3 KiB	129 ms
fudan.edu.cn/_js/jquery-3.4.1.min.js	30.3 KiB
fudan.edu.cn/_js/_portletPlugs/datepicker/css/datepicker.css	1.8 KiB	129 ms
fudan.edu.cn/_js/_portletPlugs/simpleNews/css/simplenews.css	3.8 KiB	129 ms
fudan.edu.cn/_js/_portletPlugs/sudyNavi/css/sudyNav.css	876 B	129 ms
fudan.edu.cn/_upload/site/00/02/2/style/5/5.css	302 B	129 ms
fudan.edu.cn/_js/jquery-migrate.min.js	4.0 KiB
fudan.edu.cn/_upload/site/1/style/1/1.css	284 B	129 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/libs/jquery.sudy.js	7.9 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/style.css	2.8 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Fliter.css	1.9 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.css	2.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/search.js	7.7 KiB	89 ms
fudan.edu.cn/_css/_system/system.css	316 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Filter.js	3.1 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Element	Layout shift score
新闻聚焦复旦大学第十四届读书节开幕，新教育全民阅读活动启动人间四月天，正是读书时。 2026-04-21(88) 【旦园光盒】复旦强基就读体验如何？物理、… `body.main > div.body_b > div#container-1`	0.405

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 30 ms 7.5 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/libs/jquery.sudy.js	7.6 KiB	3.2 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/main.js?var=2.0	5.3 KiB	2.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/search.js	7.3 KiB	2.0 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

Source: Google web.dev / Lighthouse

Estimated savings: 130 ms 140.7 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	136.7 KiB	119.4 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/base/tangr...	35.2 KiB	21.3 KiB

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Other	3.1 s
Script Evaluation	828 ms
Style & Layout	318 ms
Rendering	179 ms
Script Parsing & Compilation	46 ms
Parse HTML & CSS	44 ms
Garbage Collection	7.3 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in the main frame.	Actionable

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 2.1 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/style.css	14.3 KiB	2.1 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 10.1 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/video.css	10.1 KiB	10.1 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/_upload/article/images/84/5d/bb097d034f2991806a82d1a132b...	12.8 MiB
/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb61333...	1.5 MiB
/_upload/article/images/1f/30/5d2f956b4cef8496c52951b9d75...	1.5 MiB
/_upload/article/images/45/fb/cf3164084befb27bd698441c4e6...	1.3 MiB
/_upload/article/images/e8/93/f82c244042569297553c48b425d...	941.8 KiB
/_upload/article/images/fc/47/24ee4a8344efac0073ae329087a...	940.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main_img_1.png	926.9 KiB
/_upload/article/images/d3/64/d371e15e4d3eaf1af023a0a93c3...	906.3 KiB
/_upload/article/images/ee/34/f1ea3d0c4b359d0d0dc45989597...	752.9 KiB
/_upload/article/images/e4/a4/a9682810451ba0eee789c138b14...	650.0 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
div#banner > div.inner > div.banner_nav2 > img `div#banner > div.inner > div.banner_nav2 > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/222.png
body.main > div.body_b > div.banner_nav > img `body.main > div.body_b > div.banner_nav > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/111.png
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/2a/c3/78d833ac4831b3b77aae007eccb...
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/ce/e7/02286a304292a564176a3a51bad...
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/99/22/8e0f840a438dbbbe35693233087...
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/46/1d/e5476cb9470eb4427679af3419c...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/8c/68/c97b8827435193412a5e0610fb0...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/8c/68/c97b8827435193412a5e0610fb0...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f3/28/236e13d6409abd5de8d934923ed...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f3/28/236e13d6409abd5de8d934923ed...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/fe/3a/77827ed94d9582f7a0650550c82...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/fe/3a/77827ed94d9582f7a0650550c82...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d5/72/d8f996104b1cbd71887d6521286...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1a/bd/e68ad4a04e1cada63dbceb1431b...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1a/bd/e68ad4a04e1cada63dbceb1431b...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/c2/8e/5aed1a8f49598e05ea87adec6c5...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/04/de/2b7fd2b146069e03920d1266828...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/a6/a0/61bf29524e768c3d3b3c49609c8...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/04/de/2b7fd2b146069e03920d1266828...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1c/fa/9888c5ef4e12989af4e64f5b496...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1c/fa/9888c5ef4e12989af4e64f5b496...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/72/e8/9f9be39d4120802e985d9812b2d...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/72/e8/9f9be39d4120802e985d9812b2d...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0b/b4/ad85ac2c4a438497e78fb1bd577...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/57/79/3f42359043e9989e9fd49f5caeb...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0a/47/0448de9a470f8005736ba8caf07...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/3c/67/978486e3402f819b9d84d1aeae4...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/60/c2/e33445f449dbb02440d8e52543e...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/60/c2/e33445f449dbb02440d8e52543e...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1e/91/2e106fc74e4480f6a468720f90a...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/00/78/9069bce94527a8f5b5cc8f9afad...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/2c/62/86206da440d3b481576ffadc1a1...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f7/d2/cad96c984eef8651d38dc14e071...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d8/73/934cc70d476ca5c9ba5bd1597f5...
div.head-left > div.sitelogo > a > img `div.head-left > div.sitelogo > a > img`	fudan.edu.cn/_upload/site/00/02/2/logo.png
p.copyright > span > a > img `p.copyright > span > a > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/shjbzx2.png
p.copyright > span > a > img `p.copyright > span > a > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/bszsb2.png

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Document request latency

●Optimize DOM size

●Font display

●Optimize viewport for mobile

●JavaScript execution time 0.7 s

●Avoid long main-thread tasks 10 long tasks found

●Avoid non-composited animations 64 animated elements found

●Network Requests

●Network Round Trip Times 200 ms

●Server Backend Latencies 60 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 110 ms

○INP breakdown

○User Timing marks and measures

Accessibility

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
14 `li.news > div.news_box > div.news_date > div.news_year`
16：00 `div.news_wz > div.news_con > div.news_text > p.t1`
14 `li.news > div.news_box > div.news_date > div.news_year`
10:00-11:30 `div.news_wz > div.news_con > div.news_text > p.t1`
13 `li.news > div.news_box > div.news_date > div.news_year`
15：30-17：30 `div.news_wz > div.news_con > div.news_text > p.t1`

These are opportunities to improve the legibility of your content.

Internationalization and localization

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These are opportunities to improve the interpretation of your content by users in different locales.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.head-left > div.sitelogo > a > img `div.head-left > div.sitelogo > a > img`
body.main > div.body_b > div.banner_nav > img `body.main > div.body_b > div.banner_nav > img`
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`
div#banner > div.inner > div.banner_nav2 > img `div#banner > div.inner > div.banner_nav2 > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_imgs > div.imgs > a.active > img `div.news_imgs > div.imgs > a.active > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.focus > div.focus-container > div.focus-item > a `div.focus > div.focus-container > div.focus-item > a`
div.shares > ul > li.i1 > a `div.shares > ul > li.i1 > a`
div.shares > ul > li.i2 > a `div.shares > ul > li.i2 > a`
div.shares > ul > li.i3 > a `div.shares > ul > li.i3 > a`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
div.shares > ul > li.i1 > a `div.shares > ul > li.i1 > a`
div.shares > ul > li.i2 > a `div.shares > ul > li.i2 > a`
div.shares > ul > li.i3 > a `div.shares > ul > li.i3 > a`
div.shares > ul > li.i4 > a `div.shares > ul > li.i4 > a`
div.shares > ul > li.i5 > a `div.shares > ul > li.i5 > a`
div.shares > ul > li.i6 > a `div.shares > ul > li.i6 > a`
div.shares > ul > li.i7 > a `div.shares > ul > li.i7 > a`
div.shares > ul > li.i8 > a `div.shares > ul > li.i8 > a`
div.shares > ul > li.i9 > a `div.shares > ul > li.i9 > a`
div.foot-con > p.copyright > span > a `div.foot-con > p.copyright > span > a`
div.foot-con > p.copyright > span > a `div.foot-con > p.copyright > span > a`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
head > meta `head > meta`

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●Buttons have an accessible name

●Input buttons have discernible text.

●Document has a `<title>` element

●Links are distinguishable without relying on color.

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`[aria-*]` attributes match their roles

○`button`, `link`, and `menuitem` elements have accessible names

○ARIA attributes are used as specified for the element's role

○Deprecated ARIA roles were not used

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○`[aria-hidden="true"]` elements do not contain focusable descendents

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements use only permitted ARIA attributes

○`[role]`s have all required `[aria-*]` attributes

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○`[role]` values are valid

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○`[aria-*]` attributes have valid values

○`[aria-*]` attributes are valid and not misspelled

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has a valid value for its `[lang]` attribute

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/ee/34/f1ea3d0c4b359d0d0dc45989597...	320 x 954 (0.34)	780 x 954 (0.82)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/e4/a4/a9682810451ba0eee789c138b14...	320 x 954 (0.34)	780 x 954 (0.82)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/1f/30/5d2f956b4cef8496c52951b9d75...	320 x 954 (0.34)	780 x 954 (0.82)
ul > li.i3 > div.con > img `ul > li.i3 > div.con > img`	/_upload/article/images/9e/53/d3fe76c743e39931cf233cb82e7...	90 x 599 (0.15)	635 x 599 (1.06)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/70/b5/046763ab4029bceca2ec1e300e0...	320 x 599 (0.53)	490 x 599 (0.82)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/42/93/9b2dd3da46f5ac13d935555fefa...	320 x 385 (0.83)	300 x 385 (0.78)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/19/ea/8223132c4959a06db1b01b23a57...	320 x 320 (1.00)	290 x 320 (0.91)
ul > li.i5 > div.con > img `ul > li.i5 > div.con > img`	/_upload/article/images/dd/c0/65220e42441db15b058d29b81d1...	90 x 260 (0.35)	260 x 260 (1.00)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0b/46/9b7264524fabbd2c1d88755d6a7...	320 x 239 (1.34)	281 x 239 (1.18)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/04/a0/897d9d814203a216741edb72ac5...	320 x 320 (1.00)	209 x 320 (0.65)
ul > li.i7 > div.con > img `ul > li.i7 > div.con > img`	/_upload/article/images/21/a8/a40c61b24a4081fad59d1dca911...	90 x 239 (0.38)	254 x 239 (1.06)
ul > li.i1 > div.con > img `ul > li.i1 > div.con > img`	/_upload/article/images/af/cc/70dd3e6d4769bfc80ae64728c7f...	90 x 240 (0.38)	240 x 240 (1.00)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/02/34/9e12616943c3938223a5acb0f14...	320 x 240 (1.33)	240 x 240 (1.00)
ul > li.i2 > div.con > img `ul > li.i2 > div.con > img`	/_upload/article/images/70/e0/70b9885940608c92d348d955e5e...	90 x 240 (0.38)	240 x 240 (1.00)
ul > li.i4 > div.con > img `ul > li.i4 > div.con > img`	/_upload/article/images/b6/63/52276fed4aaa981636295b6aa4a...	90 x 240 (0.38)	240 x 240 (1.00)
ul > li.i6 > div.con > img `ul > li.i6 > div.con > img`	/_upload/article/images/b0/c9/99a34e6f4d9ab5e128fc45d2484...	90 x 240 (0.38)	240 x 240 (1.00)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/83/29/acf8ad1a46208606142e8d712ab...	320 x 239 (1.34)	237 x 239 (0.99)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/73/00/49eb85014bea997e88c187e7174...	320 x 195 (1.64)	287 x 195 (1.47)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/24/62/3c2dffb348faa081b8e9af2a4a0...	320 x 239 (1.34)	225 x 239 (0.94)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/fc/b3/54a268d244f196d4991030013ae...	320 x 239 (1.34)	198 x 239 (0.83)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f5/a2/d32d5d7e4a4fa47f6471d005e7e...	320 x 238 (1.34)	198 x 238 (0.83)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f8/7b/7c299d714fd4b71955d4612abc6...	320 x 240 (1.33)	180 x 240 (0.75)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/a2/a0/d1071822411abfda86d9145c3cc...	320 x 239 (1.34)	179 x 239 (0.75)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/b8/ac/601de794475f8466900f972193e...	320 x 239 (1.34)	178 x 239 (0.74)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/6e/1e/060bc6cc4365bc23af7f7350fc8...	320 x 239 (1.34)	176 x 239 (0.74)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/12/5b/5abf57834616876b38c41e4adc8...	320 x 239 (1.34)	173 x 239 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/06/ec/848c23f04ae68c67c1fc3a9e21a...	320 x 239 (1.34)	173 x 239 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/aa/fe/958eac154c989586162613b31f8...	320 x 238 (1.34)	172 x 238 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/5f/d3/15eaebcb482faaa2f215e978cee...	320 x 238 (1.34)	172 x 238 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/b1/14/2eb3b6a84ed0a8c463962c2f442...	320 x 239 (1.34)	171 x 239 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/02/56/baefab8c4a65ad543baf0319077...	320 x 239 (1.34)	169 x 239 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/ef/b7/7d755e5b4d05a4b0843989939a2...	320 x 238 (1.34)	169 x 238 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/ed/6f/fc39d63942c2b30d0e227d667eb...	320 x 239 (1.34)	168 x 239 (0.70)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/e1/87/fcf3b3d64774b9c107b91e1f286...	320 x 239 (1.34)	168 x 239 (0.70)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/98/8d/ea6569394429b85f494b2bf69ef...	320 x 238 (1.34)	168 x 238 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/eb/e3/7696a1c9402b9e1a11febdbfe12...	320 x 239 (1.34)	167 x 239 (0.70)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/97/a5/8dec89dd4fd4ab0cfb7c014f55a...	320 x 239 (1.34)	166 x 239 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/8a/dc/cafd0fed4749a1607f3deed4741...	320 x 238 (1.34)	165 x 238 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/dd/74/e993c70946ee9fdffc6ccf96a2d...	320 x 239 (1.34)	164 x 239 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/64/d2/9521558e45c79db6542e6220680...	320 x 238 (1.34)	164 x 238 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/51/65/44a74b0d4a36927a6e3f08cc66d...	320 x 239 (1.34)	161 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/83/f9/7d86e77f4f1aae09ba974dc8d81...	320 x 239 (1.34)	161 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/66/3d/00ea53564d4ba0806a4bf7966a2...	320 x 239 (1.34)	160 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/ae/bf/b72a6c43471ca7f53729574c5f3...	320 x 239 (1.34)	160 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d4/9e/bdc049d648099840daf154366ea...	320 x 238 (1.34)	159 x 238 (0.67)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/75/85/7af62f54461595822213d4ca65c...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/00/99/5746f09943fe890af4a03ef2db8...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/76/5a/6e4d47d4461c80762e38cebb61a...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/ba/27/06ff4c2f46eb9fb6e1dd3dfa128...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/bc/6d/f251444d4d90b8ebfd00ef61a34...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/8b/69/7a8592114f028fa9f7b32d8c353...	320 x 121 (2.64)	263 x 121 (2.17)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/68/cb/714a98364748b2b680525fd9874...	320 x 171 (1.87)	114 x 171 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/71/96/4b15a263451cbbde4538380bf7e...	320 x 148 (2.16)	109 x 148 (0.74)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/70/84/361741d34231834b4f60d7ac5ec...	320 x 149 (2.15)	103 x 149 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f8/2e/5ad9496a4656931b03e83f0b902...	320 x 143 (2.24)	101 x 143 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/5d/00/fbc4e3254b2caa74b97d780fab9...	320 x 141 (2.27)	100 x 141 (0.71)

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Unload event listeners are deprecated and will be removed.	hm.baidu.com/hm.js?2358de8fcde33676f65b406ffd4460cc line 1, col 274

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

SEO

Crawling and Indexing

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
div#header > div.inner > div.mod > a.navi-aside-toggle `div#header > div.inner > div.mod > a.navi-aside-toggle`
< `div.inner > div.artpic_banner > div.focus > a.focus-navigation`
> `div.inner > div.artpic_banner > div.focus > a.focus-navigation`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.shares > ul > li.i1 > a `div.shares > ul > li.i1 > a`
微信 `ul > li.i1 > span > a`
div.shares > ul > li.i3 > a `div.shares > ul > li.i3 > a`
抖音 `ul > li.i3 > span > a`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
body.main > div#bdSharePopup_selectshare1776898039899box > div.bdselect_share_head > a.bdselect_share_dialog_close `body.main > div#bdSharePopup_selectshare1776898039899box > div.bdselect_share_head > a.bdselect_share_dialog_close`

To appear in search results, crawlers need access to your app.

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.head-left > div.sitelogo > a > img `div.head-left > div.sitelogo > a > img`
body.main > div.body_b > div.banner_nav > img `body.main > div.body_b > div.banner_nav > img`
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`
div#banner > div.inner > div.banner_nav2 > img `div#banner > div.inner > div.banner_nav2 > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_imgs > div.imgs > a.active > img `div.news_imgs > div.imgs > a.active > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Document has a valid `hreflang`

○robots.txt is valid

○Document has a valid `rel=canonical`

Results for https://fudan.edu.cn

Site Health

How you compare

Top Priorities (5)

Fix Priority Matrix

Quick Wins

Strategic

Easy Improvements

Deprioritize

What fixing these means

Conversion Barriers

Speed (2)

Trust (2)

Usability (3)

Content (2)

Navigation (3)

Return on Investment

Investment

Monthly returns

Regulatory risk avoided

Estimated Remediation Cost

Cost by category

Cost by effort level

What Inaction Is Costing You

Compliance Risk

Bandwidth Waste

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Contrast

Internationalization and localization

Names and labels

Tables and lists

Best practices

Best Practices

User Experience

General

SEO

Crawling and Indexing

Content Best Practices

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Contrast

Internationalization and localization

Names and labels

Best practices

Best Practices

User Experience

General

SEO

Crawling and Indexing

Content Best Practices

Keyboard Shortcuts