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Results for https://xunlei.com

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United States United States · Santa Clara Completed: Apr 22, 2026 22:11 UTC
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Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
D66

Site Health

Score: 66 / 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.

Solid SEO basics — a few optimizations could boost rankings.

Good server performance with room for optimization.

Mostly compliant — a few items need attention.

Missing metadata means poor previews on social media and search.

Reasonable footprint with room for optimization.

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

core-js · 1463 peers
You 66
·
Avg 72
-6 below average
0 50 100
Framework · 1475 peers
You 66
·
Avg 74
-8 below average
0 50 100

Top Priorities (5)

1

Content-Security-Policy header is missing

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

Security › Security Headers
2

HSTS header is missing

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

Security › Security Headers
3

No Content-Security-Policy header found

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

Security › Content Security Policy
4

21 image-in-link without alt text

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

Accessibility › Alt Text Quality
5

34 image(s) missing alt attribute

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

Accessibility › Alt Text Quality
View fix priority matrix

Fix Priority Matrix

5 findings

Quick Wins

3

High impact, low effort — start here.

Strategic

2

High impact, requires investment.

Easy Improvements

0

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

0

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →
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What fixing these means

Your site has several issues that may be affecting user experience and business outcomes. 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.
2 accessibility issues exclude users who rely on assistive technology.
C
Could reach Estimate based on resolving critical issues

Conversion Barriers

2 critical 9 warning

11 barrier(s) likely increasing bounce by ~33%.

Speed (2)

Page takes 16.8s to load

+12% bounce

Users abandon at ~3s — you're 14.3s over the 2.5s threshold

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

High main-thread blocking time

+2% bounce

Page is non-interactive for 405ms after first paint

Fix: Defer third-party scripts and split large bundles

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 (1)

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 (3)

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, …)

Thin content

+3% bounce

Under 300 words — visitors bounce looking for substance, search engines rank competitors first

Fix: Add a substantive FAQ, product detail, or case-study section

Navigation (3)

7 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

4 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

¥1,575 investment → ¥4.63/month returns + CNY 50,000,000 risk avoided

Payback period: > 2 years First-year ROI: -96%

Investment

¥1,575

4h · 5 findings

Monthly returns

¥4.63 /mo

~¥56 / year

  • Bandwidth savings ¥4.63

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

¥1,575

4.5 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
¥ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

¥4,166,671 / month at risk

~¥50,000,056 / 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

¥4.63 /mo

8102.9 MB/mo × 0.571 CNY/GB

  • Optimize transfer: save ~810 KB per page load
    Saves ¥4.63/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

Unique monthly visitors from your analytics

Purchases, signups, or key actions

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.

47
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
65
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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.

8.37 s

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

16.80 s

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

405 ms

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

0.000

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

8.37 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.

17.06 s

Detailed Report

Audit breakdown by category with detailed findings.

47

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.

RequestCache TTLTransfer Size
m.xunlei.com/img/xunlei-background.7529e43a.png0.0 ms581.9 KiB
m.xunlei.com/js/chunk-common.18ae7111.js0.0 ms577.5 KiB
m.xunlei.com/main/b4.png0.0 ms339.6 KiB
m.xunlei.com/main/m-banner.png0.0 ms324.5 KiB
m.xunlei.com/js/vendor.7fe0b994.js0.0 ms167.2 KiB
m.xunlei.com/main/b1.png0.0 ms149.7 KiB
m.xunlei.com/fonts/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.d0831fe6.woff20.0 ms125.3 KiB
m.xunlei.com/icons/xunleiyingyin-new.png0.0 ms43.3 KiB
m.xunlei.com/icons/xunleiyouxi.png0.0 ms39.5 KiB
m.xunlei.com/css/vendor.6a81cf17.css0.0 ms38.1 KiB
m.xunlei.com/img/m-link2.dde6f88a.png0.0 ms32.6 KiB
m.xunlei.com/icons/xl-speed.png0.0 ms29.4 KiB
m.xunlei.com/icons/gongwanganbei.svg0.0 ms24.8 KiB
m.xunlei.com/icons/jingyingxingwangzhan.svg0.0 ms24.8 KiB
m.xunlei.com/img/m-link1.170cf89f.png0.0 ms24.4 KiB
m.xunlei.com/icons/xinbaianxinxi.svg0.0 ms19.6 KiB
m.xunlei.com/js/2.0fc209f6.js0.0 ms17.8 KiB
m.xunlei.com/footer/qrcode.png0.0 ms15.5 KiB
m.xunlei.com/css/chunk-common.35738933.css0.0 ms5.6 KiB
m.xunlei.com/icons/xl-browser-new.png0.0 ms4.6 KiB
m.xunlei.com/js/app.8471c94b.js0.0 ms4.0 KiB
m.xunlei.com/icons/logo.svg0.0 ms3.2 KiB
m.xunlei.com/fetch.js0.0 ms3.0 KiB
m.xunlei.com/icons/xunleihuiyuan.svg0.0 ms2.6 KiB
m.xunlei.com/css/2.8e809375.css0.0 ms2.4 KiB
m.xunlei.com/icons/weibo.svg0.0 ms1.7 KiB
m.xunlei.com/css/app.5bdbb1d9.css0.0 ms1.5 KiB
m.xunlei.com/icons/weixin.svg0.0 ms1.3 KiB
m.xunlei.com/icons/menu.svg0.0 ms887 B
m.xunlei.com/icons/m-right.svg0.0 ms845 B
m.xunlei.com/icons/x-future-right.svg0.0 ms817 B
m.xunlei.com/icons/x-b-product-right.svg0.0 ms804 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

URLResource SizeEst Savings
手机迅雷 4亿用户下载选择 下载 Android 迅雷 Windows 版 Mac 版 TV 版 Nas 版 section#customer > div.x-c-product-control > div > div.background
m.xunlei.com/img/xunlei-background.7529e43a.png581.3 KiB386.0 KiB
div.row > div.col-4 > span.q-icon > img div.row > div.col-4 > span.q-icon > img
m.xunlei.com/main/b4.png339.0 KiB333.5 KiB
赋能共识,共建信任 section.child > div.x-banner-control > div.text-center > img
m.xunlei.com/main/m-banner.png323.9 KiB290.8 KiB
div.row > div.col-4 > span.q-icon > img div.row > div.col-4 > span.q-icon > img
m.xunlei.com/main/b1.png149.1 KiB143.7 KiB
div.row > div > span.q-icon > img div.row > div > span.q-icon > img
m.xunlei.com/icons/xunleiyingyin-new.png42.7 KiB41.5 KiB
div.row > div > span.q-icon > img div.row > div > span.q-icon > img
m.xunlei.com/icons/xunleiyouxi.png38.9 KiB37.8 KiB
div.row > div > span.q-icon > img div.row > div > span.q-icon > img
m.xunlei.com/icons/xl-speed.png28.9 KiB27.6 KiB
构筑可信数字基石 a > div.x-future-control > div.relative-position > img.p2
m.xunlei.com/img/m-link2.dde6f88a.png32.0 KiB24.6 KiB
面向未来 a > div.x-future-control > div.relative-position > img.p1
m.xunlei.com/img/m-link1.170cf89f.png23.9 KiB17.8 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:2360.431 label:Time to first byte subpart:timeToFirstByte] map[duration:206.742 label:Resource load delay subpart:resourceLoadDelay] map[duration:44.24 label:Resource load duration subpart:resourceLoadDuration] map[duration:270.145 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-DIV
nodeLabel: 手机迅雷 4亿用户下载选择 下载 Android 迅雷 Windows 版 Mac 版 TV 版 Nas 版
path: 1,HTML,1,BODY,0,DIV,1,DIV,4,DIV,0,MAIN,0,DIV,2,SECTION,0,DIV,2,DIV,0,DIV
selector: section#customer > div.x-c-product-control > div > div.background
snippet: <div data-v-101dbb51="" class="background text-center relative-position">

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-0-DIV
nodeLabel: 手机迅雷 4亿用户下载选择 下载 Android 迅雷 Windows 版 Mac 版 TV 版 Nas 版
path: 1,HTML,1,BODY,0,DIV,1,DIV,4,DIV,0,MAIN,0,DIV,2,SECTION,0,DIV,2,DIV,0,DIV
selector: section#customer > div.x-c-product-control > div > div.background
snippet: <div data-v-101dbb51="" class="background text-center relative-position">

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.

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.

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

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.8 s
URLTime Spent
xunlei.com/1.2 s
www.xunlei.com/1.6 s
m.xunlei.com/m/0.0 ms

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

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: 300 ms 36.2 KiB
URLTransfer SizeEst Savings
m.xunlei.com/css/vendor.6a81cf17.css37.6 KiB36.2 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: 2.8 s 516.5 KiB
URLTransfer SizeEst Savings
m.xunlei.com/js/chunk-common.18ae7111.js446.1 KiB418.0 KiB
m.xunlei.com/js/vendor.7fe0b994.js166.6 KiB98.5 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.

CategoryTime Spent
Other789 ms
Script Evaluation615 ms
Style & Layout463 ms
Script Parsing & Compilation245 ms
Rendering90 ms
Parse HTML & CSS46 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 reasonFailure type
The page has an unload handler in the main frame.Actionable

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
赋能共识,共建信任 section.child > div.x-banner-control > div.text-center > img
m.xunlei.com/main/m-banner.png

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

Layout shift culprits
Optimize DOM size
Forced reflow
Optimize viewport for mobile
Minify CSS
Minify JavaScript
Avoids enormous network payloads Total size was 2,638 KiB
JavaScript execution time 0.8 s
Avoid long main-thread tasks 6 long tasks found
Network Requests
Network Round Trip Times 280 ms
Server Backend Latencies 60 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 0 ms
INP breakdown
User Timing marks and measures
Avoid non-composited animations
Avoid large layout shifts
65

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.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.bg-white > header.q-header > div.q-toolbar > button.q-btn div.bg-white > header.q-header > div.q-toolbar > button.q-btn

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
span.q-btn__wrapper > span.q-btn__content > div.text-body1 > img.img-icon span.q-btn__wrapper > span.q-btn__content > div.text-body1 > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon

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.x-c-product-control > div > div.background > a div.x-c-product-control > div > div.background > a
div > div.row > div > a div > div.row > div > 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.

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
下载 Android 迅雷 button.q-btn > span.q-btn__wrapper > span.q-btn__content > div.text-body1
Windows 版 div.icons > div.icons-item > a > div
Mac 版 div.icons > div.icons-item > a > div
TV 版 div.icons > div.icons-item > a > div
Nas 版 div.icons > div.icons-item > a > div
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption
收起迅雷产品 div > div.fold-control > div.row > div.name
立即下载 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption

These are opportunities to improve the legibility of your content.

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

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>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-hidden="true"]` elements do not contain focusable descendents
Document has a `<title>` element
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
Links are distinguishable without relying on color.
No element has a `[tabindex]` value greater than 0
Touch targets have sufficient size and spacing.
Document has a main landmark.
Deprecated ARIA roles were not used
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
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements use only permitted 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
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
Heading elements appear in a sequentially-descending order
`<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
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
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.
81

Best Practices

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 / WarningSource
Unload event listeners are deprecated and will be removed.

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
Displays images with correct aspect ratio
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 clickjacking with XFO or CSP
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Redirects HTTP traffic to HTTPS
92

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.

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
span.q-btn__wrapper > span.q-btn__content > div.text-body1 > img.img-icon span.q-btn__wrapper > span.q-btn__content > div.text-body1 > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon

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
Links are crawlable
robots.txt is valid
Document has a valid `hreflang`
Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

42
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
80
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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.

2.42 s

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

4.17 s

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

422 ms

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

0.000

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

5.37 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.

14.62 s

Detailed Report

Audit breakdown by category with detailed findings.

42

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.

RequestCache TTLTransfer Size
www.xunlei.com/main/link.mp40.0 ms4.3 MiB
www.xunlei.com/main/banner-loop.mp40.0 ms2.7 MiB
www.xunlei.com/main/p2.png0.0 ms1.3 MiB
www.xunlei.com/js/chunk-common.18ae7111.js0.0 ms1.2 MiB
www.xunlei.com/main/link.png0.0 ms797.4 KiB
www.xunlei.com/main/p2.mp40.0 ms766.5 KiB
www.xunlei.com/main/banner.png0.0 ms433.6 KiB
www.xunlei.com/main/b4.png0.0 ms339.5 KiB
www.xunlei.com/js/vendor.7fe0b994.js0.0 ms167.3 KiB
www.xunlei.com/main/b1.png0.0 ms149.7 KiB
www.xunlei.com/1732515455000_vip-c1.png0.0 ms131.0 KiB
www.xunlei.com/1727250911674_c4-speed.png0.0 ms121.0 KiB
www.xunlei.com/main/c5.png0.0 ms103.4 KiB
www.xunlei.com/main/c1.png0.0 ms70.5 KiB
www.xunlei.com/icons/xunleiyingyin-new.png0.0 ms43.3 KiB
www.xunlei.com/icons/xunleiyouxi.png0.0 ms39.4 KiB
www.xunlei.com/css/vendor.6a81cf17.css0.0 ms38.1 KiB
www.xunlei.com/icons/1208-nas.png0.0 ms34.1 KiB
www.xunlei.com/icons/1208-ios.png0.0 ms34.0 KiB
www.xunlei.com/icons/1208-windows.png0.0 ms33.4 KiB
www.xunlei.com/icons/1208-android.png0.0 ms33.2 KiB
www.xunlei.com/icons/gongwanganbei.svg0.0 ms32.8 KiB
www.xunlei.com/icons/jingyingxingwangzhan.svg0.0 ms32.8 KiB
www.xunlei.com/icons/1208-tv.png0.0 ms32.6 KiB
www.xunlei.com/icons/1208-mac.png0.0 ms32.6 KiB
www.xunlei.com/icons/xl-speed.png0.0 ms29.4 KiB
www.xunlei.com/icons/xinbaianxinxi.svg0.0 ms25.8 KiB
www.xunlei.com/fonts/KFOlCnqEu92Fr1MmWUlfBBc-.0344cc3c.woff0.0 ms20.4 KiB
www.xunlei.com/fonts/KFOmCnqEu92Fr1Mu4mxM.9b78ea3b.woff0.0 ms20.4 KiB
www.xunlei.com/img/qrcode.7faa7404.png0.0 ms15.5 KiB
www.xunlei.com/main/xunlei-tv-qrcode.png0.0 ms13.3 KiB
www.xunlei.com/js/3.f88d207e.js0.0 ms11.6 KiB
www.xunlei.com/main/xunlei-android-qrcode.png0.0 ms10.7 KiB
www.xunlei.com/main/xunlei-ios-qrcode.png0.0 ms10.6 KiB
www.xunlei.com/1752478115525_c6-browser.png0.0 ms6.8 KiB
www.xunlei.com/icons/logo.svg0.0 ms6.6 KiB
www.xunlei.com/css/chunk-common.35738933.css0.0 ms5.6 KiB
www.xunlei.com/icons/xunleihuiyuan.svg0.0 ms4.9 KiB
www.xunlei.com/icons/xl-browser-new.png0.0 ms4.5 KiB
www.xunlei.com/main/logo.png0.0 ms4.3 KiB
www.xunlei.com/js/app.8471c94b.js0.0 ms4.0 KiB
www.xunlei.com/fetch.js0.0 ms3.0 KiB
www.xunlei.com/css/3.e5442271.css0.0 ms2.8 KiB
www.xunlei.com/icons/android@light.svg0.0 ms2.0 KiB
www.xunlei.com/icons/android.svg0.0 ms2.0 KiB
www.xunlei.com/icons/apple@light.svg0.0 ms1.6 KiB
www.xunlei.com/icons/wap.svg0.0 ms1.6 KiB
www.xunlei.com/icons/wap@light.svg0.0 ms1.6 KiB
www.xunlei.com/css/app.5bdbb1d9.css0.0 ms1.5 KiB
www.xunlei.com/icons/apple.svg0.0 ms1.4 KiB
www.xunlei.com/icons/web@light.svg0.0 ms1.2 KiB
www.xunlei.com/icons/mac@light.svg0.0 ms1.2 KiB
www.xunlei.com/icons/web.svg0.0 ms1.2 KiB
www.xunlei.com/icons/mac.svg0.0 ms1.1 KiB
www.xunlei.com/icons/pc@light.svg0.0 ms907 B
www.xunlei.com/icons/pc.svg0.0 ms894 B
www.xunlei.com/icons/icon-download-part.svg0.0 ms730 B
www.xunlei.com/main/banner-loop.mp40.0 ms481 B
www.xunlei.com/main/link.mp40.0 ms474 B
www.xunlei.com/main/p2.mp40.0 ms472 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

URLResource SizeEst Savings
div#customer > div.c > div.x-download-viedo > video div#customer > div.c > div.x-download-viedo > video
www.xunlei.com/main/p2.png1.3 MiB1.2 MiB
a > div#future > div > video.video a > div#future > div > video.video
www.xunlei.com/main/link.png796.8 KiB682.7 KiB
迅雷下载 SDK div.text-center > div.icon > a > img.poster
www.xunlei.com/main/b4.png339.0 KiB330.4 KiB
div.x-banner > div.container > div.x-banner-video > video#video div.x-banner > div.container > div.x-banner-video > video#video
www.xunlei.com/main/banner.png433.1 KiB324.6 KiB
迅雷下载 JS-SDK div.text-center > div.icon > a > img.poster
www.xunlei.com/main/b1.png149.1 KiB140.5 KiB
迅雷会员 div.a2 > div.icon-wrap > a > img.poster
www.xunlei.com/1732515455000_vip-c1.png130.5 KiB118.0 KiB
迅雷游戏加速器 div.a2 > div.icon-wrap > a > img.poster
www.xunlei.com/1727250911674_c4-speed.png120.5 KiB108.0 KiB
迅雷游戏 div.a2 > div.icon-wrap > a > img.poster
www.xunlei.com/main/c5.png102.9 KiB90.4 KiB
迅雷影音 div.a2 > div.icon-wrap > a > img.poster
www.xunlei.com/main/c1.png70.0 KiB57.5 KiB
a > div.row > span.x-icon > img a > div.row > span.x-icon > img
www.xunlei.com/icons/xunleiyingyin-new.png42.7 KiB42.3 KiB
a > div.row > span.x-icon > img a > div.row > span.x-icon > img
www.xunlei.com/icons/xunleiyouxi.png38.9 KiB38.5 KiB
div.some-icon > a > span.q-icon > img div.some-icon > a > span.q-icon > img
www.xunlei.com/icons/1208-nas.png33.6 KiB32.7 KiB
div.some-icon > a > span.q-icon > img div.some-icon > a > span.q-icon > img
www.xunlei.com/icons/1208-ios.png33.4 KiB32.5 KiB
div.some-icon > a > span.q-icon > img div.some-icon > a > span.q-icon > img
www.xunlei.com/icons/1208-windows.png32.9 KiB32.0 KiB
div.some-icon > a > span.q-icon > img div.some-icon > a > span.q-icon > img
www.xunlei.com/icons/1208-android.png32.6 KiB31.7 KiB
div.some-icon > a > span.q-icon > img div.some-icon > a > span.q-icon > img
www.xunlei.com/icons/1208-tv.png32.1 KiB31.2 KiB
div.some-icon > a > span.q-icon > img div.some-icon > a > span.q-icon > img
www.xunlei.com/icons/1208-mac.png32.1 KiB31.1 KiB
a > div.row > span.x-icon > img a > div.row > span.x-icon > img
www.xunlei.com/icons/xl-speed.png28.9 KiB28.4 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:3812.7909998779296 label:Time to first byte subpart:timeToFirstByte] map[duration:14.651000122070313 label:Resource load delay subpart:resourceLoadDelay] map[duration:1502.326 label:Resource load duration subpart:resourceLoadDuration] map[duration:1187.199 label:Element render delay subpart:elementRenderDelay]]
lhId: page-3-VIDEO
nodeLabel: div.x-banner > div.container > div.x-banner-video > video#video
path: 1,HTML,1,BODY,0,DIV,1,DIV,3,DIV,0,MAIN,0,DIV,0,DIV,0,DIV,0,VIDEO
selector: div.x-banner > div.container > div.x-banner-video > video#video
snippet: <video data-v-0958a27d="" autoplay="autoplay" loop="loop" muted="muted" playsinline="" poster="main/banner.png" src="main/banner-loop.mp4" id="video">

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-3-VIDEO
nodeLabel: div.x-banner > div.container > div.x-banner-video > video#video
path: 1,HTML,1,BODY,0,DIV,1,DIV,3,DIV,0,MAIN,0,DIV,0,DIV,0,DIV,0,VIDEO
selector: div.x-banner > div.container > div.x-banner-video > video#video
snippet: <video data-v-0958a27d="" autoplay="autoplay" loop="loop" muted="muted" playsinline="" poster="main/banner.png" src="main/banner-loop.mp4" id="video">

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.

URLProtocol
www.xunlei.com/http/1.1
www.xunlei.com/fetch.jshttp/1.1
www.xunlei.com/css/vendor.6a81cf17.csshttp/1.1
www.xunlei.com/css/app.5bdbb1d9.csshttp/1.1
www.xunlei.com/css/chunk-common.35738933.csshttp/1.1
www.xunlei.com/js/chunk-common.18ae7111.jshttp/1.1
www.xunlei.com/css/3.e5442271.csshttp/1.1
www.xunlei.com/js/3.f88d207e.jshttp/1.1
www.xunlei.com/icons/logo.svghttp/1.1
www.xunlei.com/main/banner.pnghttp/1.1
www.xunlei.com/main/p2.pnghttp/1.1
www.xunlei.com/main/logo.pnghttp/1.1
www.xunlei.com/icons/1208-android.pnghttp/1.1
www.xunlei.com/icons/icon-download-part.svghttp/1.1
www.xunlei.com/icons/1208-ios.pnghttp/1.1
www.xunlei.com/icons/1208-windows.pnghttp/1.1
www.xunlei.com/site.webmanifesthttp/1.1
www.xunlei.com/icons/1208-mac.pnghttp/1.1
www.xunlei.com/icons/1208-nas.pnghttp/1.1
www.xunlei.com/icons/1208-tv.pnghttp/1.1
www.xunlei.com/icons/xunleihuiyuan.svghttp/1.1
www.xunlei.com/icons/web@light.svghttp/1.1
www.xunlei.com/1732515455000_vip-c1.pnghttp/1.1
www.xunlei.com/icons/xunleiyingyin-new.pnghttp/1.1
www.xunlei.com/icons/pc.svghttp/1.1
www.xunlei.com/icons/mac.svghttp/1.1
www.xunlei.com/icons/pc@light.svghttp/1.1
www.xunlei.com/icons/mac@light.svghttp/1.1
www.xunlei.com/main/c1.pnghttp/1.1
www.xunlei.com/icons/xl-browser-new.pnghttp/1.1
www.xunlei.com/icons/android.svghttp/1.1
www.xunlei.com/icons/apple.svghttp/1.1
www.xunlei.com/icons/android@light.svghttp/1.1
www.xunlei.com/icons/apple@light.svghttp/1.1
www.xunlei.com/1752478115525_c6-browser.pnghttp/1.1
www.xunlei.com/icons/xl-speed.pnghttp/1.1
www.xunlei.com/1727250911674_c4-speed.pnghttp/1.1
www.xunlei.com/icons/xunleiyouxi.pnghttp/1.1
www.xunlei.com/icons/web.svghttp/1.1
www.xunlei.com/icons/wap.svghttp/1.1
www.xunlei.com/icons/wap@light.svghttp/1.1
www.xunlei.com/main/c5.pnghttp/1.1
www.xunlei.com/main/b4.pnghttp/1.1
www.xunlei.com/main/b1.pnghttp/1.1
www.xunlei.com/main/link.pnghttp/1.1
www.xunlei.com/icons/xinbaianxinxi.svghttp/1.1
www.xunlei.com/icons/gongwanganbei.svghttp/1.1
www.xunlei.com/icons/jingyingxingwangzhan.svghttp/1.1
www.xunlei.com/js/vendor.7fe0b994.jshttp/1.1
www.xunlei.com/js/app.8471c94b.jshttp/1.1
www.xunlei.com/fonts/KFOlCnqEu92Fr1MmWUlfBBc-.0344cc3c.woffhttp/1.1
www.xunlei.com/fonts/KFOmCnqEu92Fr1Mu4mxM.9b78ea3b.woffhttp/1.1
www.xunlei.com/main/banner-loop.mp4http/1.1
www.xunlei.com/main/p2.mp4http/1.1
www.xunlei.com/main/link.mp4http/1.1
www.xunlei.com/1732515489685_vip-c1a.pnghttp/1.1
www.xunlei.com/main/c1a.pnghttp/1.1
www.xunlei.com/1752466570280_c6a-browser.pnghttp/1.1
www.xunlei.com/1727249714940_c4a-speed.pnghttp/1.1
www.xunlei.com/main/c5a.pnghttp/1.1
www.xunlei.com/main/b4a.pnghttp/1.1
www.xunlei.com/main/b1a.pnghttp/1.1
www.xunlei.com/main/xunlei-android-qrcode.pnghttp/1.1
www.xunlei.com/main/xunlei-ios-qrcode.pnghttp/1.1
www.xunlei.com/main/xunlei-tv-qrcode.pnghttp/1.1
www.xunlei.com/img/qrcode.7faa7404.pnghttp/1.1
www.xunlei.com/favicon-32x32.pnghttp/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.

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

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 440 ms
URLTime Spent
xunlei.com/440 ms
www.xunlei.com/0.0 ms

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

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: 40 ms 36.5 KiB
URLTransfer SizeEst Savings
www.xunlei.com/css/vendor.6a81cf17.css37.6 KiB36.5 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: 900 ms 1019.1 KiB
URLTransfer SizeEst Savings
www.xunlei.com/js/chunk-common.18ae7111.js980.0 KiB919.9 KiB
www.xunlei.com/js/vendor.7fe0b994.js166.7 KiB99.2 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.

CategoryTime Spent
Other1.1 s
Script Evaluation1.0 s
Style & Layout176 ms
Script Parsing & Compilation56 ms
Rendering42 ms
Garbage Collection37 ms
Parse HTML & CSS17 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 reasonFailure 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.

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

Layout shift culprits
Optimize DOM size
Forced reflow
Optimize viewport for mobile
Minify CSS
Minify JavaScript
JavaScript execution time 1.0 s
Avoid long main-thread tasks 9 long tasks found
Image elements have explicit `width` and `height`
Network Requests
Network Round Trip Times 170 ms
Server Backend Latencies 110 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 350 ms
INP breakdown
User Timing marks and measures
Avoid non-composited animations
Avoid large layout shifts
80

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
下载迅雷 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-white
立即下载 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-white
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-white
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-white
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-white
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-white
了解更多 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span
了解更多 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span
了解更多 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span

These are opportunities to improve the legibility of your content.

Names and labels

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.row > div.download-action-item > div.some-icon > a div.row > div.download-action-item > div.some-icon > a
div.row > div.download-action-item > div.some-icon > a div.row > div.download-action-item > div.some-icon > a
div.row > div.download-action-item > div.some-icon > a div.row > div.download-action-item > div.some-icon > a
div.row > div.download-action-item > div.some-icon > a div.row > div.download-action-item > div.some-icon > a
div.x-footer-wrap > div.row > div.row > a div.x-footer-wrap > div.row > div.row > 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

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
Image elements have `[alt]` attributes
`[aria-hidden="true"]` elements do not contain focusable descendents
Document has a `<title>` element
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
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.
Document has a main landmark.
`<video>` elements contain a `<track>` element with `[kind="captions"]`
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 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
Heading elements appear in a sequentially-descending order
`<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
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.
81

Best Practices

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 / WarningSource
Unload event listeners are deprecated and will be removed.

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
Displays images with correct aspect ratio
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 clickjacking with XFO or CSP
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Redirects HTTP traffic to HTTPS
92

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
首页 div.row > ul > li.item > a.txt
所有产品 div.row > ul > li.item > a.txt
li.item > ul.sub-menu > li.sub-menu-item > a li.item > ul.sub-menu > li.sub-menu-item > a
li.item > ul.sub-menu > li.sub-menu-item > a li.item > ul.sub-menu > li.sub-menu-item > a
li.item > ul.sub-menu > li.sub-menu-item > a li.item > ul.sub-menu > li.sub-menu-item > a
li.item > ul.sub-menu > li.sub-menu-item > a li.item > ul.sub-menu > li.sub-menu-item > a
li.item > ul.sub-menu > li.sub-menu-item > a li.item > ul.sub-menu > li.sub-menu-item > a
li.item > ul.sub-menu > li.sub-menu-item > a li.item > ul.sub-menu > li.sub-menu-item > a
li.item > ul.sub-menu > li.sub-menu-item > a li.item > ul.sub-menu > li.sub-menu-item > a
li.item > ul.sub-menu > li.sub-menu-item > a li.item > ul.sub-menu > li.sub-menu-item > a
面向用户 div.container > div.row > div.item > a
面向企业 div.container > div.row > div.item > a
面向未来 div.container > div.row > div.item > a
div.row > div.download-action-item > div.some-icon > a div.row > div.download-action-item > div.some-icon > a
div.row > div.download-action-item > div.some-icon > a div.row > div.download-action-item > div.some-icon > a

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

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
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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