Skip to content
https://jianshu.com

Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

9

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

Performance issues directly impact user engagement and conversion rates.

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.

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:0.577723] map[node:map[boundingRect:map[bottom:2176 height:1851 left:18 right:394 top:325 width:376] lhId:page-8-DIV nodeLabel:专利法｜著录项目变更（专题十二）8.1 非原创 著录项目（即著录事项）包括： 申请号、申请日、发明创造名称、分类号、优先权事项、申请人或者专利权人事项、发.… path:1,HTML,1,BODY,15,DIV,0,SECTION,1,DIV,1,DIV,3,DIV selector:section#layout-default > div.main-view > div#homepage > div.flow-list-container snippet:<div data-v-12a84da0="" class="flow-list-container"> type:node] score:0.577711] map[node:map[boundingRect:map[bottom:85 height:23 left:347 right:394 top:62 width:47] lhId:page-7-SPAN nodeLabel:换一批 path:1,HTML,1,BODY,15,DIV,0,SECTION,1,DIV,1,DIV,0,DIV,0,DIV,1,SPAN selector:div#homepage > div#collection-recommended > div.top-title > span.collection-change snippet:<span class="collection-change" data-v-12a84da0=""> type:node] score:1.2e-05 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:45 height:42 left:18 right:60 top:3 width:42] lhId:page-12-IMG nodeLabel:logo path:1,HTML,1,BODY,15,DIV,0,SECTION,0,DIV,0,HEADER,0,DIV,0,IMG selector:div.header-wrap > header#jianshu-header > div.logo-wrap > img.logo snippet:<img src="data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNTAwIiBoZWlnaHQ9IjUwMCIgeG1sbnM9…" alt="logo" class="logo" data-v-f8617f56=""> type:node]] map[cause:Web font extra:map[type:url value:https://at.alicdn.com/t/font_189105_ztcop1wmq2.woff2?t=1640246256872]]] type:subitems]]]

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.

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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:30.331 source:map[column:47385 line:0 type:source-location url:https://cdn2.jianshu.io/asimov/app.c58e14d7c999855ad87f.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.

URLResource SizeEst Savings
摄影 div#homepage > div#collection-recommended > div.recommend-collection > a.tag
lupic.cdn.bcebos.com/2025102514/3100908387_18.jpeg34.2 KiB23.3 KiB
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > img
/upload_images/930948-fd8563ad8fb25c94.jpg?imageMogr2/aut...23.2 KiB22.7 KiB
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > img
/upload_images/1352014-a5b373602504aa50.png?imageMogr2/au...12.3 KiB11.0 KiB
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > img
/upload_images/29636896-5888a582c06ba943.png?imageMogr2/a...11.7 KiB10.7 KiB
div.main-view > div#homepage > div.notice-z > img.notice-z-img div.main-view > div#homepage > div.notice-z > img.notice-z-img
cdn2.jianshu.io/asimov/src/assets/image/download/gg.905d1a32.png14.3 KiB8.8 KiB
section#layout-default > footer#footer > div.download-guide > ::after section#layout-default > footer#footer > div.download-guide > ::after
cdn2.jianshu.io/asimov/src/assets/image/download-guide.1cef6fa3.png60.8 KiB6.9 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:2606.1440002441404 label:Time to first byte subpart:timeToFirstByte] map[duration:1327.1909997558594 label:Resource load delay subpart:resourceLoadDelay] map[duration:11.798 label:Resource load duration subpart:resourceLoadDuration] map[duration:69.481 label:Element render delay subpart:elementRenderDelay]]
lhId: page-6-DIV
nodeLabel: 下载简书，随时随地看好文
path: 1,HTML,1,BODY,15,DIV,0,SECTION,2,FOOTER,1,DIV
selector: div#app > section#layout-default > footer#footer > div.download-guide
snippet: <div class="download-guide">

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-6-DIV
nodeLabel: 下载简书，随时随地看好文
path: 1,HTML,1,BODY,15,DIV,0,SECTION,2,FOOTER,1,DIV
selector: div#app > section#layout-default > footer#footer > div.download-guide
snippet: <div class="download-guide">

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

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
qzs.gdtimg.com/union/res/union_sdk/page/h5_sdk/i.js0.0 ms359.8 KiB
c.69mok.com/js/finger.js0.0 ms33.8 KiB
c.69mok.com/js/hyapialltw.js0.0 ms31.0 KiB
udiab1.jianshu.com/source/soqu/static/u-qu/n-q/w.js14400.0 s38.6 KiB
udiab1.jianshu.com/lhjnov.js14400.0 s38.6 KiB
lupic.cdn.bcebos.com/2025102514/3100908398_14.jpeg143380.0 s74.6 KiB
/upload_images/930948-fd8563ad8fb25c94.jpg?imageMogr2/aut...0.0 ms23.5 KiB
lupic.cdn.bcebos.com/2025102514/3100908386_14.jpeg105912.0 s53.4 KiB
lupic.cdn.bcebos.com/2025102514/3100908394_14.jpeg95569.0 s47.3 KiB
/upload_images/1352014-a5b373602504aa50.png?imageMogr2/au...0.0 ms12.8 KiB
lupic.cdn.bcebos.com/2025102514/3100908387_18.jpeg120627.0 s34.8 KiB
udiab1.jianshu.com/js/logo/js/logo.js14400.0 s6.4 KiB
udiab1.jianshu.com/dhebfgn.js14400.0 s4.2 KiB
s.ddgjjj.com/zyj0366.js0.0 ms2.3 KiB
lupic.cdn.bcebos.com/static/wap_insert_screen_finger.png132425.0 s6.1 KiB
udiab1.jianshu.com/production/fa_zcbj_w_g/static/j.js14400.0 s2.0 KiB
lupic.cdn.bcebos.com/static/wap_insert_screen_circle.png48841.0 s2.7 KiB
udiab1.jianshu.com/common/g/openjs/bc-h-hyc/resource/kd.js14400.0 s1.9 KiB
c.69mok.com/js/hyhot.js0.0 ms1.2 KiB
udiab1.jianshu.com/js/logo/css/logo-sm.css14400.0 s1011 B
udiab1.jianshu.com/js/time2.js14400.0 s764 B
/adx.php?c=d25pZD0xY2JhYzJjNjEzMmFkMDY4AHM9MWNiYWMyYzYxMz...0.0 ms464 B
/adx.php?c=d25pZD0zMjkwOTM5ZDExMjg4Y2M3AHM9MzI5MDkzOWQxMT...0.0 ms464 B
/s.php?c=d25pZD0xY2JhYzJjNjEzMmFkMDY4AHdpbl9kc3A9NAB0dT11...0.0 ms464 B
cpro.baidustatic.com/cpro/ui/pr.js3600.0 s486 B
v1.cnzz.com/z_stat.php?id=127980795790.0 s369 B
zz.bdstatic.com/linksubmit/push.js86400.0 s552 B
sp0.baidu.com/9_Q4simg2RQJ8t7jm9iCKT-xh_/s.gif?l=https://www.jianshu.com/0.0 ms116 B
/sa.gif?project=jianshu&data=eyJkaXN0aW5jdF9pZCI6IjE5ZGIy...0.0 ms58 B
/sa.gif?project=jianshu&data=eyJkaXN0aW5jdF9pZCI6IjE5ZGIy...0.0 ms57 B
/sa.gif?project=jianshu&data=eyJkaXN0aW5jdF9pZCI6IjE5ZGIy...0.0 ms57 B
/sa.gif?project=jianshu&data=eyJkaXN0aW5jdF9pZCI6IjE5ZGIy...0.0 ms57 B
/sa.gif?project=jianshu&data=eyJkaXN0aW5jdF9pZCI6IjE5ZGIy...0.0 ms57 B
/sa.gif?project=jianshu&data=eyJkaXN0aW5jdF9pZCI6IjE5ZGIy...0.0 ms57 B
/sa.gif?project=jianshu&data=eyJkaXN0aW5jdF9pZCI6IjE5ZGIy...0.0 ms57 B
/sa.gif?project=jianshu&data=eyJkaXN0aW5jdF9pZCI6IjE5ZGIy...0.0 ms57 B
udiab1.jianshu.com/js/logo/js/logo.js14400.0 s0 B
udiab1.jianshu.com/js/logo/css/logo-sm.css14400.0 s0 B

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.

URLEst Savings
at.alicdn.com/t/font_189105_ztcop1wmq2.woff2?t=16402462568725.0 ms

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.

URLTransfer Size
v1.cnzz.com/z_stat.php?id=1279807957369 B

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: 1.2 s
URLTime Spent
jianshu.com/1.2 s
www.jianshu.com/0.0 ms

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.4 s
URLTime Spent
www.jianshu.com/1.5 s

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.

ElementLayout shift score
专利法｜著录项目变更（专题十二）8.1 非原创 著录项目（即著录事项）包括： 申请号、申请日、发明创造名称、分类号、优先权事项、申请人或者专利权人事项、发.… section#layout-default > div.main-view > div#homepage > div.flow-list-container
0.578
换一批 div#homepage > div#collection-recommended > div.top-title > span.collection-change
0.000

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.

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

Diagnostics

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

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.2 s 741.6 KiB
URLTransfer SizeEst Savings
cdn2.jianshu.io/asimov/2.9a0bfd449717d5b785bd.js451.2 KiB435.6 KiB
qzs.gdtimg.com/union/res/union_sdk/page/h5_sdk/i.js358.8 KiB164.6 KiB
cdn2.jianshu.io/asimov/vendor.d86e1279b7fdd60f0742.js160.5 KiB77.3 KiB
udiab1.jianshu.com/lhjnov.js38.5 KiB32.2 KiB
cdn2.jianshu.io/asimov/app.c58e14d7c999855ad87f.js57.6 KiB31.9 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.

URLTotal CPU TimeScript EvaluationScript Parse
cdn2.jianshu.io/asimov/app.c58e14d7c999855ad87f.js1.1 s953 ms42 ms
qzs.gdtimg.com/union/res/union_sdk/page/h5_sdk/i.js879 ms678 ms184 ms
Unattributable819 ms6.8 ms0.3 ms
www.jianshu.com/760 ms26 ms6.7 ms
cdn2.jianshu.io/asimov/vendor.d86e1279b7fdd60f0742.js427 ms261 ms91 ms
udiab1.jianshu.com/source/soqu/static/u-qu/n-q/w.js309 ms268 ms18 ms
cdn2.jianshu.io/asimov/2.9a0bfd449717d5b785bd.js280 ms4.0 ms273 ms
c.69mok.com/js/hyapialltw.js94 ms87 ms6.0 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.

CategoryTime Spent
Script Evaluation2.4 s
Other946 ms
Script Parsing & Compilation658 ms
Style & Layout535 ms
Garbage Collection171 ms
Rendering121 ms
Parse HTML & CSS38 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 did not finish loading before navigating away.Not 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
div.main-view > div#homepage > div.notice-z > img.notice-z-img div.main-view > div#homepage > div.notice-z > img.notice-z-img
cdn2.jianshu.io/asimov/src/assets/image/download/gg.905d1a32.png

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

●Optimize DOM size
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Reduce unused CSS
●Avoids enormous network payloads Total size was 2,108 KiB
●Avoid long main-thread tasks 10 long tasks found
●Network Requests
●Network Round Trip Times 240 ms
●Server Backend Latencies 990 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
64

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.

ARIA

Using ARIA attributes in roles where they are prohibited can mean that important information is not communicated to users of assistive technologies. Learn more about prohibited ARIA roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
lwa-ad-one div.flow-list-container > ul.flow-list-ul > div > div.hierarchy-29x2I_0
baidu-ad div.flow-list-container > ul.flow-list-ul > div > div.transleft-WjF9Z_0
gdt-ad section#layout-default > div.main-view > div#homepage > div#x1tntzbunz

These are opportunities to improve the usage of ARIA in your application which 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
立即下载 div.header-wrap > header#jianshu-header > div.header-download > button
换一批 div#homepage > div#collection-recommended > div.top-title > span.collection-change
摄影 div#homepage > div#collection-recommended > div.recommend-collection > span.tag
读书 div#homepage > div#collection-recommended > div.recommend-collection > span.tag
@IT·互联网 div#homepage > div#collection-recommended > div.recommend-collection > span.tag
手绘 div#homepage > div#collection-recommended > div.recommend-collection > span.tag
故事 div#homepage > div#collection-recommended > div.recommend-collection > span.tag
旅行·在路上 div#homepage > div#collection-recommended > div.recommend-collection > span.tag
自然科普 div#homepage > div#collection-recommended > div.recommend-collection > span.tag
摄影 div#homepage > div#collection-recommended > div.recommend-collection > a.tag
读书 div#homepage > div#collection-recommended > div.recommend-collection > a.tag
@IT·互联网 div#homepage > div#collection-recommended > div.recommend-collection > a.tag
手绘 div#homepage > div#collection-recommended > div.recommend-collection > a.tag
故事 div#homepage > div#collection-recommended > div.recommend-collection > a.tag
旅行·在路上 div#homepage > div#collection-recommended > div.recommend-collection > a.tag
自然科普 div#homepage > div#collection-recommended > div.recommend-collection > a.tag
非原创 著录项目（即著录事项）包括： 申请号、申请日、发明创造名称、分类号、优先权事项、申请人或者专利权人事项、发... li.note-flow > content.content > div.summary > p.abstract
3.058 div > li.note-flow > div.meta > span
静静朵朵开 div > li.note-flow > div.meta > span.name
打开APP阅读 div > li.note-flow > div.meta > span.note__flow__download
人生最不怕的事是积累 如果上一年做的事不能成为下一年的阶梯，上五年做的事儿不能成为下五年的基石，如此蹉跎十年，基本... li.note-flow > content.content > div.summary > p.abstract
6.375 div > li.note-flow > div.meta > span
诗与阳光 div > li.note-flow > div.meta > span.name
打开APP阅读 div > li.note-flow > div.meta > span.note__flow__download
20260414【新员工系列】 “我希望在这家公司成长为什么样的人？”——这个问题看似宏大，却恰恰是新员工最应尽早... li.note-flow > content.content > div.summary > p.abstract
生涯规划与人才发展四金儿 div > li.note-flow > div.meta > span.name
打开APP阅读 div > li.note-flow > div.meta > span.note__flow__download
大前天晚上，我写了一篇文章，发布在了自媒体平台上。 这篇文章，在头条上数据很好，到今天有三万多阅读，收入15块多；... li.note-flow > content.content > div.summary > p.abstract
115.794 div > li.note-flow > div.meta > span
若林之域 div > li.note-flow > div.meta > span.name
131 div > li.note-flow > div.meta > span
789 div > li.note-flow > div.meta > span
打开APP阅读 div > li.note-flow > div.meta > span.note__flow__download
swift 在工程中可以通过桥接文件使用OC代码，但是在framework中是不支持使用桥接文件的，下面是是swi... li.note-flow > content.content > div.summary > p.abstract
2.824 div > li.note-flow > div.meta > span
尼古拉斯超仔 div > li.note-flow > div.meta > span.name
14 div > li.note-flow > div.meta > span
打开APP阅读 div > li.note-flow > div.meta > span.note__flow__download
嗡——！ 一道道湛蓝色的能量屏障从地面飞速升起，将整个擂台空间彻底封锁，屏障之上流转着细密的电光，隔绝一切外部干预... li.note-flow > content.content > div.summary > p.abstract
数星羊 div > li.note-flow > div.meta > span.name
打开APP阅读 div > li.note-flow > div.meta > span.note__flow__download
最近面临一些职业选择，然后就有一些想法跟大家分享。 作为在临床试验行业工作6年多的小角色一枚，经历了这个行业从辉煌... li.note-flow > content.content > div.summary > p.abstract
林芷文的日常碎碎念 div > li.note-flow > div.meta > span.name
打开APP阅读 div > li.note-flow > div.meta > span.note__flow__download
说故事总在美化人间，这个感受特别敏锐。我们看到的那些广为流传的故事，大多把世界修得温柔又圆满，其实本质上，是在用虚... li.note-flow > content.content > div.summary > p.abstract
好运杠精 div > li.note-flow > div.meta > span.name
打开APP阅读 div > li.note-flow > div.meta > span.note__flow__download
儿子对酸奶的偏爱，或是去超市买水的念头，从来都带着一份雷打不动的坚持——每次开口，都要两瓶，一瓶一定要我也喝，我不... li.note-flow > content.content > div.summary > p.abstract
关业友合 div > li.note-flow > div.meta > span.name
打开APP阅读 div > li.note-flow > div.meta > span.note__flow__download
点击以下链接，可以观看视频。 https://v.ixigua.com/MXsFWAT/23个声母的读音/[htt... li.note-flow > content.content > div.summary > p.abstract
29.763 div > li.note-flow > div.meta > span
生命中最美的是成长 div > li.note-flow > div.meta > span.name
42 div > li.note-flow > div.meta > span
打开APP阅读 div > li.note-flow > div.meta > span.note__flow__download
用于本地资源检测，帮助开发者尽早发现资源文件中存在的问题 支持所有版本的Unity项目 不依赖Unity Edit... li.note-flow > content.content > div.summary > p.abstract
5.099 div > li.note-flow > div.meta > span
忆中异 div > li.note-flow > div.meta > span.name
30 div > li.note-flow > div.meta > span
打开APP阅读 div > li.note-flow > div.meta > span.note__flow__download
展开更多文章 div#homepage > div.flow-list-container > div > div.flow-list-placeholder-load-more

These are opportunities to improve the legibility of your content.

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
body.reader-day-mode > div > img body.reader-day-mode > div > img
div.main-view > div#homepage > div.notice-z > img.notice-z-img div.main-view > div#homepage > div.notice-z > img.notice-z-img
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > img
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > img
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > img

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body.reader-day-mode > div > iframe body.reader-day-mode > div > iframe
div > div.transleft-WjF9Z_0 > div > iframe div > div.transleft-WjF9Z_0 > div > iframe
body.reader-day-mode > div > iframe#msg7466031745387959 body.reader-day-mode > div > iframe#msg7466031745387959

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
专利法｜著录项目变更（专题十二）8.1 非原创 著录项目（即著录事项）包括： 申请号、申请日、发明创造名称、分类号、优先权事项、申请人或者专利权人事项、发.… div.main-view > div#homepage > div.flow-list-container > ul.flow-list-ul

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
专利法｜著录项目变更（专题十二）8.1 非原创 著录项目（即著录事项）包括： 申请号、申请日、发明创造名称、分类号、优先权事项、申请人或者专利权人事项、发.… div.flow-list-container > ul.flow-list-ul > div > li.note-flow
101.人生最不怕的事是积累 人生最不怕的事是积累 如果上一年做的事不能成为下一年的阶梯，上五年做的事儿不能成为下五年的基石，如此蹉跎十年，基本... 6… div.flow-list-container > ul.flow-list-ul > div > li.note-flow
48长期愿景：我希望在这家公司成长为什么样的人？这个岗位如何帮助我实现它？ 20260414【新员工系列】 “我希望在这家公司成长为什么样的人？”——这个问… div.flow-list-container > ul.flow-list-ul > div > li.note-flow
挣了30块 大前天晚上，我写了一篇文章，发布在了自媒体平台上。 这篇文章，在头条上数据很好，到今天有三万多阅读，收入15块多；... 115.794若林之… div.flow-list-container > ul.flow-list-ul > div > li.note-flow
swift framework 使用 OC 代码 swift 在工程中可以通过桥接文件使用OC代码，但是在framework中是不支持使用桥接文件的，下面是… div.flow-list-container > ul.flow-list-ul > div > li.note-flow
第二季第三百零一章 死战绝境 嗡——！ 一道道湛蓝色的能量屏障从地面飞速升起，将整个擂台空间彻底封锁，屏障之上流转着细密的电光，隔绝一切外部干预... 0… div.flow-list-container > ul.flow-list-ul > div > li.note-flow
碎念109：毕业后的第一份工作，基本决定了你未来的职业发展 最近面临一些职业选择，然后就有一些想法跟大家分享。 作为在临床试验行业工作6年多的小角色一枚，经… div.flow-list-container > ul.flow-list-ul > div > li.note-flow
为什么故事总在美化人间？ 说故事总在美化人间，这个感受特别敏锐。我们看到的那些广为流传的故事，大多把世界修得温柔又圆满，其实本质上，是在用虚... 0好运… div.flow-list-container > ul.flow-list-ul > div > li.note-flow
两瓶的牵挂 儿子对酸奶的偏爱，或是去超市买水的念头，从来都带着一份雷打不动的坚持——每次开口，都要两瓶，一瓶一定要我也喝，我不... 0关业友合 0 0… div.flow-list-container > ul.flow-list-ul > div > li.note-flow
汉语拼音2:学习23个声母的读音 点击以下链接，可以观看视频。 https://v.ixigua.com/MXsFWAT/23个声母的读音/[htt... … div.flow-list-container > ul.flow-list-ul > div > li.note-flow
Unity资源检测（Asset Checker）工具 用于本地资源检测，帮助开发者尽早发现资源文件中存在的问题 支持所有版本的Unity项目 不依赖Unit… div.flow-list-container > ul.flow-list-ul > div > li.note-flow

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

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

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-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●ARIA attributes are used as specified for the element's role
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links have a discernible name
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○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
○`[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
○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
○`<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
○Links are distinguishable without relying on color.
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○No element has a `[tabindex]` value greater than 0
○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.
○Identical links have the same purpose.
○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.
73

Best Practices

Trust and Safety

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URLRequest Resolution
homepageAllowed

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.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > img
/upload_images/930948-fd8563ad8fb25c94.jpg?imageMogr2/aut...80 x 80 (1.00)1500 x 693 (2.16)
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > img
/upload_images/29636896-5888a582c06ba943.png?imageMogr2/a...80 x 80 (1.00)419 x 553 (0.76)
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > img
/upload_images/1352014-a5b373602504aa50.png?imageMogr2/au...80 x 80 (1.00)524 x 352 (1.49)

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
div.main-view > div#homepage > div.notice-z > img.notice-z-img div.main-view > div#homepage > div.notice-z > img.notice-z-img
cdn2.jianshu.io/asimov/src/assets/image/download/gg.905d1a32.png376 x 111339 x 100564 x 167
body.reader-day-mode > div > img body.reader-day-mode > div > img
28 x 2840 x 4042 x 42
●Avoids deprecated APIs
●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
●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
●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
○Use a strong HSTS policy
○Mitigate clickjacking with XFO or CSP
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
body.reader-day-mode > div > img body.reader-day-mode > div > img
div.main-view > div#homepage > div.notice-z > img.notice-z-img div.main-view > div#homepage > div.notice-z > img.notice-z-img
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > img
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > img
li.note-flow > content.content > span.wrap-img > img li.note-flow > content.content > span.wrap-img > 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
●Links are crawlable
●robots.txt is valid
●Document has a valid `hreflang`
○Document has a valid `rel=canonical`

Send Feedback