Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

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.

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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item `div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item`	/obj/ies-fe-bee/bee_prod/biz_1128/tos_16cfa7beceda1e131da...	382.6 KiB	345.1 KiB
美伊脆弱的休战即将结束，伊朗要求战争赔偿，美国不太可能同意-图1 `li > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/883c2d914caf47cf8de363ed844f13e2~tpl...	248.0 KiB	245.4 KiB
div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item `div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item`	/obj/ies-fe-bee/bee_prod/biz_1128/tos_07dcbd0f70eb5e52510...	361.9 KiB	211.9 KiB
美伊脆弱的休战即将结束，伊朗要求战争赔偿，美国不太可能同意-图2 `li > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/76bd3d4eb60149a784c8f3c153ded666~tpl...	190.0 KiB	187.1 KiB
兵推26次后，美智库曾通告全世界，日本介入台海，下场会非常凄惨-图3 `li > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/a65db8b5c0d642fb8e0f9caea32a33f4~tpl...	166.3 KiB	161.0 KiB
兵推26次后，美智库曾通告全世界，日本介入台海，下场会非常凄惨-图4 `li > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/8b1ed94fb9f0453aa77026456474c806~tpl...	166.3 KiB	161.0 KiB
美伊脆弱的休战即将结束，伊朗要求战争赔偿，美国不太可能同意-图4 `li > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/5b90efed4a16451f8880756a5b96eaf0~tpl...	85.3 KiB	84.0 KiB
div.feed-card-article-r > div.feed-card-cover > a > img `div.feed-card-article-r > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/38f967000ec242fa9f3f551c4bbe6a51~tpl...	71.9 KiB	70.6 KiB
div.feed-card-article-r > div.feed-card-cover > a > img `div.feed-card-article-r > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/4afc436ab67247499e2b8970b36ed492~tpl...	73.8 KiB	68.8 KiB
美伊脆弱的休战即将结束，伊朗要求战争赔偿，美国不太可能同意-图3 `li > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/e6df92679a864f3aa539f9f644e30fa4~tpl...	65.8 KiB	64.8 KiB
div.feed-card-short-video-multi-item > div.feed-card-cover > a > img `div.feed-card-short-video-multi-item > div.feed-card-cover > a > img`	/tos-cn-p-0015/oUy4ONwA9IfA4Nbfr2EBA6DpYR4FEAKpBgy7ns~tpl...	60.4 KiB	56.5 KiB
封面 `div.video-list > div.video-item > a.left-img > img.pic`	/tos-cn-i-0004/owDB7sDJFATCfzfqAjWmAEXA84UIQEAfAO8DSE~tpl...	56.7 KiB	54.0 KiB
div.feed-card-article-r > div.feed-card-cover > a > img `div.feed-card-article-r > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/384e754ce4c54739b5e2b0a49e8e2634~tpl...	52.5 KiB	51.0 KiB
兵推26次后，美智库曾通告全世界，日本介入台海，下场会非常凄惨-图1 `li > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/6c4d2ca8cca54227806b78ad91513f22~tpl...	49.8 KiB	47.1 KiB
div.feed-card-short-video-multi-item > div.feed-card-cover > a > img `div.feed-card-short-video-multi-item > div.feed-card-cover > a > img`	/tos-cn-p-0015/o0NTWfu1UAK0S7QfAhXwwlaMd8sF12UQBBCeCA~tpl...	48.5 KiB	45.4 KiB
封面 `div.video-list > div.video-item > a.left-img > img.pic`	/motor-article-img/ef18b708f12c437785fd44411266af1e~tplv-...	44.3 KiB	41.6 KiB
封面 `div.video-list > div.video-item > a.left-img > img.pic`	/tos-cn-i-dy/9f560abb125d4951bbf2445256537555~tplv-pk90l8...	43.8 KiB	41.2 KiB
封面 `div.video-list > div.video-item > a.left-img > img.pic`	/tos-cn-i-0004/o8aCGfAHIL8IAQQAu7UfMzAAmIQ4eEWGge1Nfv~tpl...	38.0 KiB	35.4 KiB
封面 `div.video-list > div.video-item > a.left-img > img.pic`	/motor-img/d6a41d56b2c54fa0994253ddd4d37c78~tplv-pk90l89v...	36.3 KiB	33.6 KiB
兵推26次后，美智库曾通告全世界，日本介入台海，下场会非常凄惨-图2 `li > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/3c084e16ad7f471e8ac1d62238255f0f~tpl...	35.0 KiB	31.8 KiB
div.feed-card-article-r > div.feed-card-cover > a > img `div.feed-card-article-r > div.feed-card-cover > a > img`	/tos-cn-i-ezhpy3drpa/053e1476d27c4137849f0b6903a28f54~tpl...	30.1 KiB	27.6 KiB
div.feed-card-article-r > div.feed-card-cover > a > img `div.feed-card-article-r > div.feed-card-cover > a > img`	/tos-cn-i-6w9my0ksvp/10d8646a27364b1ea910b1e2374adc93~tpl...	21.3 KiB	19.8 KiB
div.feed-card-short-video-multi-item > div.feed-card-cover > a > img `div.feed-card-short-video-multi-item > div.feed-card-cover > a > img`	/tos-cn-i-tjoges91tu/60c34f011b18841714f11de41480fbd8~tpl...	20.5 KiB	15.0 KiB
div.feed-card-short-video-multi-item > div.feed-card-cover > a > img `div.feed-card-short-video-multi-item > div.feed-card-cover > a > img`	/tos-cn-i-3qtffzwd0j/oU7iByfEfQUHoAShYocOIfA8iAEpGEDHTIhD...	17.9 KiB	14.2 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:819.733 label:Time to first byte subpart:timeToFirstByte] map[duration:8.068 label:Resource load delay subpart:resourceLoadDelay] map[duration:2087.359 label:Resource load duration subpart:resourceLoadDuration] map[duration:56.618 label:Element render delay subpart:elementRenderDelay]]

lhId: page-24-DIV

nodeLabel: div > div.home-banner-wrapper > div.home-banner > div.video-poster

path: 1,HTML,1,BODY,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV

selector: div > div.home-banner-wrapper > div.home-banner > div.video-poster

snippet: <div class="video-poster" style="background-image: url("https://lf9-static.bytednsdoc.com/obj/eden-cn/uhbfnup…");">

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-24-DIV

nodeLabel: div > div.home-banner-wrapper > div.home-banner > div.video-poster

path: 1,HTML,1,BODY,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV

selector: div > div.home-banner-wrapper > div.home-banner > div.video-poster

snippet: <div class="video-poster" style="background-image: url("https://lf9-static.bytednsdoc.com/obj/eden-cn/uhbfnup…");">

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
/obj/toutiao-duanwai/toutiao/toutiao_web_pc/pages/newsInd...	66.6 KiB	413 ms
lf-cdn-tos.bytescm.com/obj/static/sec_sdk_build/3.8.2/captcha/index.js	19.7 KiB	244 ms
lf-c-flwb.bytetos.com/obj/rc-client-security/web/glue/1.0.0.55/sdk-glue.js	31.4 KiB	286 ms
lf3-cdn-tos.bytescm.com/obj/rc-web-sdk/acrawler.js	20.8 KiB	244 ms
/obj/toutiao-duanwai/toutiao/toutiao_web_pc/common/vendor...	1.8 KiB	727 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
/obj/ies-fe-bee/bee_prod/biz_1128/tos_616f44a57a8d2b4078e...	8.0 s	596.1 KiB
/obj/ies-fe-bee/bee_prod/biz_1128/tos_16cfa7beceda1e131da...	8.0 s	383.7 KiB
/obj/ies-fe-bee/bee_prod/biz_1128/tos_43dc5d04bb880d511f1...	8.0 s	383.7 KiB
/obj/ies-fe-bee/bee_prod/biz_1128/tos_07dcbd0f70eb5e52510...	8.0 s	363.1 KiB
/obj/ies-fe-bee/bee_prod/biz_1128/tos_833dd69fe2d736bd369...	8.0 s	282.4 KiB
lf-security.bytegoofy.com/obj/security-secsdk/runtime_bundler_52.js	7200.0 s	18.3 KiB
/obj/rc-client-security/web/stable/1.0.1.7/bdms.js	604800.0 s	61.7 KiB
lf3-short.ibytedapm.com/slardar/fe/sdk-web/plugins/blank-screen.1.16.6.js	300.0 s	4.5 KiB
lf-c-flwb.bytetos.com/obj/rc-client-security/web/glue/1.0.0.55/sdk-glue.js	604800.0 s	31.4 KiB
/websdk/v1/getInfo?q=wQUj5V14Je2miuQFj6IpBjLloECu4hwJ%2Bv...	0.0 ms	954 B
xxbg.snssdk.com/websdk/v1/p?callback=_3885_1776801216184	0.0 ms	425 B
/slardar/fe/sdk-web/browser.cn.js?bid=toutiao_web_pc&glob...	300.0 s	0 B
lf3-short.ibytedapm.com/slardar/fe/sdk-web/plugins/common-monitors.1.16.6.js	300.0 s	0 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: 1.9 s

URL	Time Spent
toutiao.com/	650 ms
www.toutiao.com/	1.3 s
www.toutiao.com/?wid=1776801214530	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: 716 ms

URL	Time Spent
www.toutiao.com/?wid=1776801214530	816 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

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: 210 ms 52.3 KiB

URL	Transfer Size	Est Savings
/obj/toutiao-duanwai/toutiao/toutiao_web_pc/pages/newsInd...	65.4 KiB	52.3 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

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 210 ms 242.3 KiB

URL	Transfer Size	Est Savings
/obj/toutiao-duanwai/toutiao/toutiao_web_pc/common/vendor...	114.4 KiB	75.0 KiB
www.googletagmanager.com/gtag/js?id=G-QEHZPBE5HH	155.6 KiB	66.1 KiB
/obj/toutiao-duanwai/toutiao/toutiao_web_pc/pages/newsInd...	95.9 KiB	53.8 KiB
/obj/toutiao-duanwai/toutiao/toutiao_web_pc/common/tt_pc_...	60.6 KiB	47.4 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
lf9-static.bytednsdoc.com/obj/eden-cn/uhbfnupkbps/video/earth_v6.mp4	3.2 MiB
/obj/ies-fe-bee/bee_prod/biz_1128/tos_616f44a57a8d2b4078e...	596.1 KiB
/obj/ies-fe-bee/bee_prod/biz_1128/tos_16cfa7beceda1e131da...	383.7 KiB
/obj/ies-fe-bee/bee_prod/biz_1128/tos_43dc5d04bb880d511f1...	383.7 KiB
/obj/ies-fe-bee/bee_prod/biz_1128/tos_07dcbd0f70eb5e52510...	363.1 KiB
/obj/ies-fe-bee/bee_prod/biz_1128/tos_833dd69fe2d736bd369...	282.4 KiB
/tos-cn-i-6w9my0ksvp/883c2d914caf47cf8de363ed844f13e2~tpl...	249.6 KiB
/tos-cn-i-6w9my0ksvp/76bd3d4eb60149a784c8f3c153ded666~tpl...	191.5 KiB
/tos-cn-i-6w9my0ksvp/a65db8b5c0d642fb8e0f9caea32a33f4~tpl...	167.8 KiB
/tos-cn-i-6w9my0ksvp/8b1ed94fb9f0453aa77026456474c806~tpl...	167.2 KiB

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

●Max Potential First Input Delay 90 ms

●Layout shift culprits

●Optimize DOM size

●Font display

●Forced reflow

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 5 user timings

●JavaScript execution time 0.8 s

●Minimizes main-thread work 1.5 s

●Avoid long main-thread tasks 2 long tasks found

●Image elements have explicit `width` and `height`

●Network Requests

●Network Round Trip Times 320 ms

●Server Backend Latencies 980 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid large layout shifts 3 layout shifts found

○INP breakdown

○Avoid non-composited animations

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

When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn how to make command elements more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`

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
安装后可以在桌面快捷访问 `div.header-left > div.add-to-desktop-wrapper > div.add-panel > div.tips`
立即添加 `div.header-left > div.add-to-desktop-wrapper > div.add-panel > button.add-btn`
登录 `div.home-container > div.toutiao-header > div.header-right > a.login-button`
推荐 `ul.feed-default-nav > li > div.show-monitor > div.feed-default-nav-item`
大河报 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-cmp-author > a`
2评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
19小时前 `div.feed-card-article-l > div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-time-cmp`
搞笑配音语录 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-cmp-author > a`
3评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
6天前 `div.feed-card-article-l > div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-time-cmp`
映真 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-cmp-author > a`
10评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
04月08日 `div.feed-card-article-l > div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-time-cmp`
小视频 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-cmp-author > span.source`
不吃亏加冰 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-cmp-author > a`
3评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
4天前 `div.feed-card-article-l > div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-time-cmp`
外联唠嗑小茶馆 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-cmp-author > a`
1评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
4天前 `div.feed-card-article-l > div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-time-cmp`
任驰铭 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-cmp-author > a`
17评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
18小时前 `div.feed-card-article-l > div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-time-cmp`
热情云朵Ghvvspb `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-cmp-author > a`
4评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
3天前 `div.feed-card-article-l > div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-time-cmp`
万象纵览 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-cmp-author > a`
1评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
12小时前 `div.feed-card-article-l > div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-time-cmp`
婚恋故事簿 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-cmp-author > a`
14评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
02月24日 `div.feed-card-article-l > div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-time-cmp`
登录后，头条更懂你 `div.right-container > div.user-card > div.show-monitor > p.login-info`
立即登录 `div.right-container > div.user-card > div.show-monitor > a.login-button`
换一换 `div > div.ttp-hot-board > div.title-bar > button.refresh`
10 `ol > li > a.article-item > span.news-index`
换一换 `div > div.pane-header > button.right > span`
百万播放 `div.video-list > div.video-item > div.right-content > p.like`
171万次观看 `div.video-item > div.right-content > p.desc > span`
懂车时间 `div.video-item > div.right-content > p.desc > a`
69万次观看 `div.video-item > div.right-content > p.desc > span`
凤凰卫视 `div.video-item > div.right-content > p.desc > a`
36万次观看 `div.video-item > div.right-content > p.desc > span`
驾享来电 `div.video-item > div.right-content > p.desc > a`
34万次观看 `div.video-item > div.right-content > p.desc > span`
Yo哥真帅！（Yoko视频工作室） `div.video-item > div.right-content > p.desc > a`
24万次观看 `div.video-item > div.right-content > p.desc > span`
君子游网上围棋教室 `div.video-item > div.right-content > p.desc > a`
© 2026 今日头条 `div.main-content > div.right-container > div.company-wrapper > p`
扫黄打非网上举报 `div.main-content > div.right-container > div.company-wrapper > a`
网络谣言曝光台 `div.main-content > div.right-container > div.company-wrapper > a`
网上有害信息举报 `div.main-content > div.right-container > div.company-wrapper > a`
侵权举报受理公示 `div.main-content > div.right-container > div.company-wrapper > a`
MCN 专项举报：mcnjubao@toutiao.com `div.main-content > div.right-container > div.company-wrapper > p`
未成年人相关举报：400-140-2108 `div.main-content > div.right-container > div.company-wrapper > p`
算法推荐专项举报：sfjubao@bytedance.com `div.main-content > div.right-container > div.company-wrapper > p`
京ICP证140141号 `div.main-content > div.right-container > div.company-wrapper > a`
京ICP备12025439号-3 `div.main-content > div.right-container > div.company-wrapper > a`
网络文化经营许可证京网文〔2023〕3628-111号 `div.main-content > div.right-container > div.company-wrapper > a`
营业执照 `div.main-content > div.right-container > div.company-wrapper > a`
广播电视节目制作经营许可证 `div.main-content > div.right-container > div.company-wrapper > a`
出版物经营许可证 `div.main-content > div.right-container > div.company-wrapper > a`
营业性演出许可证 `div.main-content > div.right-container > div.company-wrapper > a`
互联网新闻信息服务许可证 11220190002 `div.main-content > div.right-container > div.company-wrapper > p`
药品医疗器械网络信息服务备案编号：（京）网药械信息备字（2023）第00006号 `div.main-content > div.right-container > div.company-wrapper > a`
互联网宗教信息服务许可证：京（2025）0000021 `div.main-content > div.right-container > div.company-wrapper > a`
跟帖评论自律管理承诺书 `div.main-content > div.right-container > div.company-wrapper > a`
京公网安备 11000002002023号 `div.main-content > div.right-container > div.company-wrapper > a`
网信算备110108823483902220017号 `div.main-content > div.right-container > div.company-wrapper > a`
网信算备110108823483904220019号 `div.main-content > div.right-container > div.company-wrapper > a`
网信算备110108823483903230017号 `div.main-content > div.right-container > div.company-wrapper > a`
加入头条 `div.footer-wrapper > div > div > a`
用户协议 `div.footer-wrapper > div > div > a`
隐私政策 `div.footer-wrapper > div > div > a`
媒体合作 `div.footer-wrapper > div > div > a`
广告合作 `div.footer-wrapper > div > div > a`
友情链接 `div.footer-wrapper > div > div > a`
更多 `div.footer-wrapper > div > div > span.more`
下载今日头条APP `div.footer-wrapper > div > div > a`
北京抖音信息服务有限公司 `div.footer-wrapper > div > div > span`
违法和不良信息举报：400-140-2108 `div.footer-wrapper > div > div > span`
举报邮箱：jubao@toutiao.com `div.footer-wrapper > div > div > span`

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
div.right-container > div.company-wrapper > a > img.shdf `div.right-container > div.company-wrapper > a > img.shdf`
div.right-container > div.company-wrapper > a > img.gongan `div.right-container > div.company-wrapper > a > img.gongan`

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.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item `div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item`
div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item `div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item`
div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item `div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item`
div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item `div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item`
div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item `div.security-course-wrapper > div.security-course-list-op > div.security-course-list > a.security-course-item`

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
关注推荐北京视频财经科技热点国际更多 `div.ttp-feed-module > div.main-nav-wrapper > div.feed-m-nav > ul.feed-default-nav`
刷新反馈下载扫码下载今日头条顶部 `div#root > div.home-container > div.ttp-toolbar > ul.tool-container`

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`

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
北京 `div.main-nav-wrapper > div.feed-m-nav > ul.feed-default-nav > li`
切换城市 `div.feed-default-nav-item > div.ttp-city-selector-wrapper > div.ttp-city-selector > button.ttp-city-selector-city-picker`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-short-video-multi-item > div.dislike-container > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`
div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper `div.feed-card-footer-cmp > div.right-tools > div.feed-card-footer-dislike-cmp > div.dislike-wrapper`

These items highlight common accessibility best practices.

Navigation

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
华为星钻腕表卖29999元 `div.show-monitor > div.new-hot-word > div.hot-word-list > span.words`
续签劳动合同注意要点 `div.show-monitor > div.new-hot-word > div.hot-word-list > span.words`
华为Pura90系列价格公布 `div.show-monitor > div.new-hot-word > div.hot-word-list > span.words`
印度客机盘旋4小时无法落地 `div.show-monitor > div.new-hot-word > div.hot-word-list > span.words`
《你是我的英雄》致敬志愿军烈士 `div.show-monitor > div.new-hot-word > div.hot-word-list > span.words`
罗福莉获小米五四青年奖章提名 `div.show-monitor > div.new-hot-word > div.hot-word-list > span.words`
骑士擒猛龙大比分2-0 `div.show-monitor > div.new-hot-word > div.hot-word-list > span.words`
多平台订购火车票现功能异常 `div.show-monitor > div.new-hot-word > div.hot-word-list > span.words`
被虐致死男童家属称将申请抗诉 `div.show-monitor > div.new-hot-word > div.hot-word-list > span.words`

These are opportunities to improve keyboard navigation in your application.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
北京 `div.main-nav-wrapper > div.feed-m-nav > ul.feed-default-nav > li`
2评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
3评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
10评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
3评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
1评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
17评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
4评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
1评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
14评论 `div.feed-card-footer-cmp > div.left-tools > div.feed-card-footer-comment-cmp > a`
1 日本7.7级强震影响有多大 `div.ttp-hot-board > ol > li > a.article-item`
2 郑丽文涉解放军言论让民进党破防 `div.ttp-hot-board > ol > li > a.article-item`
3 一季度服务业经济“开门红” `div.ttp-hot-board > ol > li > a.article-item`
4 时隔50年全班同学再聚会一个都没少 `div.ttp-hot-board > ol > li > a.article-item`
5 新增5个国家码接入微信支付 `div.ttp-hot-board > ol > li > a.article-item`
6 哪吒造车三年烧183亿国资投资难追回 `div.ttp-hot-board > ol > li > a.article-item`
7 台空军喊话解放军强硬回应“闭嘴” `div.ttp-hot-board > ol > li > a.article-item`
8 中国运导弹原料船被美扣押？中方回应 `div.ttp-hot-board > ol > li > a.article-item`
9 中方：希望欧方不要低估中方坚定决心 `div.ttp-hot-board > ol > li > a.article-item`
10 国内油价迎今年首次下调 `div.ttp-hot-board > ol > li > a.article-item`
下载扫码下载今日头条 `div.home-container > div.ttp-toolbar > ul.tool-container > li.tool-item`

○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>`

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

●`[role]` values are valid

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

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

●Buttons have an accessible name

●Form elements have associated labels

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

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

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

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

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

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

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

●Uses ARIA roles only on compatible elements

●Identical links have the same purpose.

○`[accesskey]` values are unique

○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 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

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

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

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

○ARIA IDs are unique

○No form fields have multiple labels

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

○`<html>` element has 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

○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.

○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.

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

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

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

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Unload event listeners are deprecated and will be removed.	/slardar/fe/sdk-web/browser.cn.js?bid=toutiao_web_pc&glob...
Unload event listeners are deprecated and will be removed.	/slardar/fe/sdk-web/browser.cn.js?bid=toutiao_web_pc&glob...

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
www.toutiao.com/	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
www.toutiao.com/?wid=1776801214530	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
/obj/toutiao-duanwai/toutiao/toutiao_web_pc/common/vendor...	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
/obj/toutiao-duanwai/toutiao/toutiao_web_pc/common/vendor...	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
/obj/toutiao-duanwai/toutiao/toutiao_web_pc/common/vendor...	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
lf3-cdn-tos.bytescm.com/obj/rc-web-sdk/acrawler.js	`WebSocket connection to 'wss://www.toutiao.com/Create%20WebSocket' failed: Error during WebSocket handshake: Unexpected response code: 404`

●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 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

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
消息 `div > div.header-notification-wrapper > div.ttp-header-notice > a.notice-icon`
发布 `div > div.header-publisher-wrapper > div.ttp-header-publisher > a.publisher-icon`
登录 `div.home-container > div.fix-header > div > a.login-button`
消息 `div.header-right > div.notification-container > div.ttp-header-notice > a.notice-icon`
发布作品 `div.toutiao-header > div.header-right > div.publisher-icon > a`
登录 `div.home-container > div.toutiao-header > div.header-right > a.login-button`
立即登录 `div.right-container > div.user-card > div.show-monitor > a.login-button`

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Line #	Content	Error
17	`Disallow: source`	`Pattern should either be empty, start with "/" or "*"`

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.right-container > div.company-wrapper > a > img.shdf `div.right-container > div.company-wrapper > a > img.shdf`
div.right-container > div.company-wrapper > a > img.gongan `div.right-container > div.company-wrapper > a > img.gongan`

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

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`