Lighthouse Mobile

· 0 checks — Mobile 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.

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
icon.zol-img.com.cn/m/pages/v2/index/m.index.1.0.0.js?202212	3600.0 s	88.4 KiB
/m/pages/v2/open-modules/wap-cps-href-param/m.open.apple....	3600.0 s	62.9 KiB
icon.zol-img.com.cn/m/pages/v2/index/m.index.1.0.0.css?202212	3600.0 s	24.7 KiB
icon.zol-img.com.cn/m/pages/assets/components/hot-pk/images/VS@2x.png	3600.0 s	17.4 KiB
/m/pages/assets/components/hot-select/images/redianjingxu...	3600.0 s	16.7 KiB
icon.zol-img.com.cn/m/pages/assets/components/new-calendar/images/more.png	3600.0 s	14.9 KiB
icon.zol-img.com.cn/m/pages/assets/assets/images/logo/logo@3x.png	3600.0 s	14.0 KiB
/m/pages/assets/components/sites-nav/images/icon_mianfeiz...	3600.0 s	13.0 KiB
icon.zol-img.com.cn/src/index/z.page.index.1.0.0.css	3600.0 s	12.6 KiB
/m/pages/assets/components/sites-nav/images/icon_cuanjigu...	3600.0 s	11.9 KiB
/m/pages/assets/components/sites-nav/images/icon_tianti@2...	3600.0 s	10.8 KiB
p.zol-img.com.cn/da/m.js	600.0 s	9.2 KiB
/m/pages/assets/components/sites-nav/images/icon_zuixinba...	3600.0 s	10.5 KiB
/m/pages/assets/components/sites-nav/images/icon_chanpinp...	3600.0 s	10.1 KiB
js.zol.com.cn/pvn/qa.min.js	3600.0 s	5.7 KiB
icon.zol-img.com.cn/m/images/2018icons/icon-f2.png	3600.0 s	5.6 KiB
icon.zol-img.com.cn/m/images/2018icons/ssd_icon.png	3600.0 s	5.1 KiB
icon.zol-img.com.cn/m/images/2018icons/xinpinrili-icon.png	3600.0 s	5.1 KiB
icon.zol-img.com.cn/m/pages/v2/open-modules/wap-cps-href-param/m.open.apple.css	3600.0 s	4.7 KiB
icon.zol-img.com.cn/m/images/2018icons/icon-face.png	3600.0 s	4.5 KiB
zdw.w8.com.cn/wapp.ht?h=&t=1776812&c=	3600.0 s	4.1 KiB
icon.zol-img.com.cn/m/images/2018icons/icon-f5.png	3600.0 s	4.1 KiB
icon.zol-img.com.cn/m/images/2018icons/icon-f3.png	3600.0 s	4.0 KiB
/m/pages/assets/components/product-list/images/icon_top2@...	3600.0 s	3.8 KiB
/m/pages/assets/components/product-list/images/icon_top1@...	3600.0 s	3.6 KiB
icon.zol-img.com.cn/m/images/2018icons/icon-f1.png	3600.0 s	3.4 KiB
/m/pages/assets/components/product-list/images/icon_top3@...	3600.0 s	3.2 KiB
/m/pages/assets/components/technology-video-list/images/b...	3600.0 s	3.1 KiB
/m/pages/assets/components/product-list/images/icon_top4@...	3600.0 s	3.1 KiB
icon.zol-img.com.cn/public/js/m-common-module.js	3600.0 s	2.2 KiB
m.zol.com.cn/Html/m/js/public/wechat-share.js	3600.0 s	2.1 KiB
/m/pages/assets/components/hot-ask-list/images/icon_answe...	3600.0 s	1.8 KiB
icon.zol-img.com.cn/m/pages/v2/open-modules/rem/m.rem.js	3600.0 s	1.7 KiB
icon.zol-img.com.cn/m/pages/assets/components/search/images/jian.png	3600.0 s	1.6 KiB
js.zol.com.cn/wappv.js	3600.0 s	1.6 KiB
icon.zol-img.com.cn/app/qrimg/appload_inviewclick_PC_homepage_head.png	3600.0 s	1.6 KiB
mstat.zol.com.cn/adrs/ol.js	3600.0 s	1.4 KiB
icon.zol-img.com.cn/mp/baidu.news/img/pic-icon.gif	3600.0 s	1.3 KiB
m.zol.com.cn/Html/m/js/public/clickStat.js	3600.0 s	1.3 KiB
icon.zol-img.com.cn/mp/baidu.news/index/comment.png	3600.0 s	1.1 KiB
icon.zol-img.com.cn/mp/baidu.news/index/look.png	3600.0 s	1.0 KiB
m.zol.com.cn/Html/m/js/public/wappv.js	3600.0 s	877 B
mstat.zol.com.cn/adrs/bms_tag.php?0.3051964688467905	0.0 ms	380 B
js.zol.com.cn/pvn/pv.ht?&t=1776813&c=&callback=_jsonp1776812919614	3600.0 s	441 B
cpro.zol.com.cn/common/openjs/dcbaz.js?id=veavsaa	0.0 ms	117 B
/?t=1776812919786&t1=1776812919784&ns=zol.media.index&pag...	0.0 ms	69 B
/?t=1776812919786&t1=1776812919784&ns=zol.media.index&pag...	0.0 ms	17 B
/?t=1776812919787&t1=1776812919784&ns=zol.media.index&pag...	0.0 ms	17 B
/?t=1776812919787&t1=1776812919784&ns=zol.media.index&pag...	0.0 ms	17 B
/?t=1776812919787&t1=1776812919784&ns=zol.media.index&pag...	0.0 ms	17 B
/?t=1776812919787&t1=1776812919784&ns=zol.media.index&pag...	0.0 ms	17 B
/?t=1776812919788&t1=1776812919784&ns=zol.media.index&pag...	0.0 ms	17 B
/?t=1776812919789&t1=1776812919784&ns=zol.media.index&pag...	0.0 ms	17 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.

URL	Est Savings
at.alicdn.com/t/font_3165497_670n30vuc7e.woff2?t=1645752515357	80 ms

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.focus > ul.container > li.swiper-slide > a.flex-pic `div.focus > ul.container > li.swiper-slide > a.flex-pic`	/g8/M00/02/09/ChMkLWnndWCIaL8dAAP2YcXoADgAAIKUgNKNeYAA_Z5...	253.6 KiB	142.9 KiB
div.focus > ul.container > li.swiper-slide > a.flex-pic `div.focus > ul.container > li.swiper-slide > a.flex-pic`	/g8/M00/02/09/ChMkLWnndfKIR7laAAK9lUEfGGkAAIKUwIOJV4AAr2t...	175.4 KiB	64.7 KiB
div.focus > ul.container > li.swiper-slide > a.flex-pic `div.focus > ul.container > li.swiper-slide > a.flex-pic`	/g8/M00/02/09/ChMkLWnnSXWIEltaAAI5jqTLwOYAAIKKgCHcWgAAjmm...	142.4 KiB	31.7 KiB
div.focus > ul.container > li.swiper-slide > a.flex-pic `div.focus > ul.container > li.swiper-slide > a.flex-pic`	/g8/M00/02/08/ChMkLWnnMyWIPZjQAAIcLDkSJVcAAIKGwHAGOsAAhxE...	135.0 KiB	24.4 KiB
影驰RTX 5070 Ti《识质存在》测试：4K画质拉满体验赛博养娃 `li.pics > a > div.pics > figure.pic`	/t_s400x300/g8/M00/02/09/ChMkLWnnSO6IEPEoAAPIYuOzmTUAAIKK...	36.8 KiB	17.3 KiB
阿维塔06T 2026款 Elite 双电机纯电版 `section.bg-white > div.flex-box > a.pro-item > img`	2b.zol-img.com.cn/product/275_400x300/407/cetDW9aUNgp2.jpg	17.4 KiB	14.8 KiB
body > section.bg-white > div.jingxuan-section > a.icon `body > section.bg-white > div.jingxuan-section > a.icon`	/m/pages/assets/components/hot-select/images/redianjingxu...	16.1 KiB	14.1 KiB
OPPO Find X9s Pro(12GB/256GB) `section.bg-white > div.flex-box > a.pro-item > img`	2c.zol-img.com.cn/product/275_400x300/154/ceUZsCLwwpMyg.jpg	15.6 KiB	13.2 KiB
div.hot-pk-list > div.hot-pk-warp > a.hotpk > ::after `div.hot-pk-list > div.hot-pk-warp > a.hotpk > ::after`	icon.zol-img.com.cn/m/pages/assets/components/hot-pk/images/VS@2x.png	16.8 KiB	12.7 KiB
Redmi K90 Max(12GB/256GB) `section.bg-white > div.flex-box > a.pro-item > img`	2e.zol-img.com.cn/product/275_400x300/988/cex9aqMIpMlc.jpg	13.4 KiB	11.3 KiB
影驰RTX 5070 Ti《识质存在》测试：4K画质拉满体验赛博养娃 `li.pics > a > div.pics > figure.pic`	/t_s400x300/g8/M00/01/01/ChMkLWncvMOIGQX5AA2bh-ewffYAAIEW...	25.8 KiB	11.1 KiB
section.bg-white > ul.sites-nav > a.sites-nav__item > ::before `section.bg-white > ul.sites-nav > a.sites-nav__item > ::before`	/m/pages/assets/components/sites-nav/images/icon_mianfeiz...	12.4 KiB	10.6 KiB
section.bg-white > ul.sites-nav > a.sites-nav__item > ::before `section.bg-white > ul.sites-nav > a.sites-nav__item > ::before`	/m/pages/assets/components/sites-nav/images/icon_cuanjigu...	11.4 KiB	9.6 KiB
body > section.bg-white > a.rili-title `body > section.bg-white > a.rili-title`	icon.zol-img.com.cn/m/pages/assets/components/new-calendar/images/more.png	14.3 KiB	8.6 KiB
section.bg-white > ul.sites-nav > a.sites-nav__item > ::before `section.bg-white > ul.sites-nav > a.sites-nav__item > ::before`	/m/pages/assets/components/sites-nav/images/icon_tianti@2...	10.1 KiB	8.3 KiB
section.bg-white > ul.sites-nav > a.sites-nav__item > ::before `section.bg-white > ul.sites-nav > a.sites-nav__item > ::before`	/m/pages/assets/components/sites-nav/images/icon_zuixinba...	9.9 KiB	8.1 KiB
中关村在线 `header.global-page-header > div.logo-box > h2 > a.logo-box__text`	icon.zol-img.com.cn/m/pages/assets/assets/images/logo/logo@3x.png	13.4 KiB	8.1 KiB
section.bg-white > ul.sites-nav > a.sites-nav__item > ::before `section.bg-white > ul.sites-nav > a.sites-nav__item > ::before`	/m/pages/assets/components/sites-nav/images/icon_chanpinp...	9.5 KiB	7.7 KiB
body > img `body > img`	/t_s640x2000/g7/M00/08/03/ChMkK2YuGiuIY4V0AABUjdzkC54AAdh...	15.9 KiB	5.5 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:1086.867 label:Time to first byte subpart:timeToFirstByte] map[duration:164.093 label:Resource load delay subpart:resourceLoadDelay] map[duration:2072.751 label:Resource load duration subpart:resourceLoadDuration] map[duration:23.819 label:Element render delay subpart:elementRenderDelay]]

lhId: page-19-A

nodeLabel: div.focus > ul.container > li.swiper-slide > a.flex-pic

path: 1,HTML,1,BODY,13,SECTION,0,DIV,0,UL,2,LI,0,A

selector: div.focus > ul.container > li.swiper-slide > a.flex-pic

snippet: <a href="https://m.zol.com.cn/article/11689502.html" data-ai="2" onclick="objectForClickStat.imgStat('m_wap_new_shouye_focus');" class="flex-pic pic swiper-lazy" style="background-image: url("https://home-fd.zol-img.com.cn/g8/M00/02/09/ChMkLWnn…");">

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-19-A

nodeLabel: div.focus > ul.container > li.swiper-slide > a.flex-pic

path: 1,HTML,1,BODY,13,SECTION,0,DIV,0,UL,2,LI,0,A

selector: div.focus > ul.container > li.swiper-slide > a.flex-pic

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
icon.zol-img.com.cn/m/pages/v2/index/m.index.1.0.0.css?202212	24.7 KiB	1.0 s
icon.zol-img.com.cn/m/pages/v2/open-modules/rem/m.rem.js	1.7 KiB

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: 3.8 s

URL	Time Spent
zol.com.cn/	1.2 s
www.zol.com.cn/	630 ms
www.zol.com.cn/	2.0 s
m.zol.com.cn/	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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Other	1.5 s
Style & Layout	1.3 s
Script Evaluation	759 ms
Rendering	285 ms
Script Parsing & Compilation	96 ms
Parse HTML & CSS	46 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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: 10 ms 66.6 KiB

URL	Transfer Size	Est Savings
icon.zol-img.com.cn/m/pages/v2/index/m.index.1.0.0.js?202212	87.8 KiB	40.4 KiB
/m/pages/v2/open-modules/wap-cps-href-param/m.open.apple....	62.3 KiB	26.2 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
body > img `body > img`	/t_s640x2000/g7/M00/08/03/ChMkK2YuGiuIY4V0AABUjdzkC54AAdh...
ul.header-panel-nav__tool > li.flex-shrink > a > img `ul.header-panel-nav__tool > li.flex-shrink > a > img`	icon.zol-img.com.cn/m/images/2018icons/icon-f1.png
ul.header-panel-nav__tool > li.flex-shrink > a > img `ul.header-panel-nav__tool > li.flex-shrink > a > img`	icon.zol-img.com.cn/m/images/2018icons/icon-f2.png
ul.header-panel-nav__tool > li.flex-shrink > a > img `ul.header-panel-nav__tool > li.flex-shrink > a > img`	icon.zol-img.com.cn/m/images/2018icons/icon-f3.png
ul.header-panel-nav__tool > li.flex-shrink > a > img `ul.header-panel-nav__tool > li.flex-shrink > a > img`	icon.zol-img.com.cn/m/images/2018icons/xinpinrili-icon.png
ul.header-panel-nav__tool > li.flex-shrink > a > img `ul.header-panel-nav__tool > li.flex-shrink > a > img`	icon.zol-img.com.cn/m/images/2018icons/icon-f5.png
ul.header-panel-nav__tool > li.flex-shrink > a > img `ul.header-panel-nav__tool > li.flex-shrink > a > img`	icon.zol-img.com.cn/m/images/2018icons/ssd_icon.png

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

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Forced reflow

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●Avoids enormous network payloads Total size was 1,643 KiB

●JavaScript execution time 0.6 s

●Avoid long main-thread tasks 6 long tasks found

●Network Requests

●Network Round Trip Times 190 ms

●Server Backend Latencies 420 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 190 ms

●Avoid large layout shifts 2 layout shifts found

○INP breakdown

○User Timing marks and measures

○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.

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
2026.04.22发布 `section.bg-white > div.flex-box > a.pro-item > span.release-time`
预约直播 `div.flex-box > a.pro-item > span.pl8 > span.live`
2026.04.21发布 `section.bg-white > div.flex-box > a.pro-item > span.release-time`
2026.04.21发布 `section.bg-white > div.flex-box > a.pro-item > span.release-time`
评测 `li.pics > a > p.tags > span.blue`
2小时前 `li.pics > a > p.tags > span.time`
评测 `li.pics > a > p.tags > span.blue`
19小时前 `li.pics > a > p.tags > span.time`
2026年04月22日 19点00分 `div.flex-box > a.live-list-item > span.tips > span.time`
评测 `li.pics > a > p.tags > span.blue`
11小时前 `li.pics > a > p.tags > span.time`
评测 `li.pics > a > p.tags > span.blue`
11小时前 `li.pics > a > p.tags > span.time`
评测 `li.pics > a > p.tags > span.blue`
12小时前 `li.pics > a > p.tags > span.time`
查看榜单 `div.product-list > div > div.list-header > a.look-rank`
评测 `li.pics > a > p.tags > span.blue`
12小时前 `li.pics > a > p.tags > span.time`
评测 `li.pics > a > p.tags > span.blue`
11小时前 `li.pics > a > p.tags > span.time`
545.3万次播放 `li.swiper-slide > a.relative > div.detail-text > span.time`
1.5万次播放 `li.swiper-slide > a.relative > div.detail-text > span.time`
评测 `li.pics > a > p.tags > span.blue`
22小时前 `li.pics > a > p.tags > span.time`
评测 `li.pics > a > p.tags > span.blue`
04.17 `li.pics > a > p.tags > span.time`
评测 `li.pics > a > p.tags > span.blue`
04.20 `li.pics > a > p.tags > span.time`
10回答 `div.hot-ask-list > div.asks-content > a.asks-content-title > div.num`
6回答 `div.hot-ask-list > div.asks-content > a.asks-content-title > div.num`
评测 `a.flex-box > div.detail-text > p.tags > span.blue`
04.18 `a.flex-box > div.detail-text > p.tags > span.time`
评测 `a.flex-box > div.detail-text > p.tags > span.blue`
04.17 `a.flex-box > div.detail-text > p.tags > span.time`
评测 `li.pics > a > p.tags > span.blue`
61 `li.pics > a > p.tags > span.comment-num`
04.17 `li.pics > a > p.tags > span.time`
点击加载更多 `body > section.bg-white > div.load-more`
网站经营者信息公示 `body > footer.pl16 > div.bottom-breads > a.info-link`

These are opportunities to improve the legibility of your content.

Internationalization and localization

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

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

Names and labels

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > img `body > img`

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > header.global-page-header > div.side-box > a.iconfont `body > header.global-page-header > div.side-box > a.iconfont`
body > section.bg-white > a.rili-title `body > section.bg-white > a.rili-title`
body > section.bg-white > div.jingxuan-section > a.icon `body > section.bg-white > div.jingxuan-section > a.icon`

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
最新报价产品排行性能天梯免费众测攒机广场 `body > section.bg-white > ul.sites-nav`
影驰RTX 5070 Ti《识质存在》测试：4K画质拉满体验赛博养娃评测 2 2小时前再战超轻量级雷柏VT0/VT3s Air MAX电竞鼠标刷新… `body > section.bg-white > ul.news-list`

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
vivo300拍照片有什么优势 10回答 `ul.news-list > div.hot-ask-list > div.asks-content > a.asks-content-title`

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

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

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

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

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

●`[role]` values are valid

●Input buttons have discernible text.

●Form elements have associated labels

●Document has a `<title>` element

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

●Heading elements appear in a sequentially-descending order

●Deprecated ARIA roles were not used

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

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

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements use only permitted ARIA attributes

○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

○Buttons have an accessible name

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

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

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

○ARIA IDs are unique

○No form fields have multiple labels

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

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

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

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

○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

○Elements with visible text labels have matching accessible names.

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

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

Best Practices

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 URL	Request Resolution
www.zol.com.cn/	Allowed
?json={%22scheme%22:%22navigateTo%22,%22data%22:{%22page%...	Allowed
2d.zol-img.com.cn/manu_photo/1795.jpg	Automatically upgraded to HTTPS
2b.zol-img.com.cn/manu_photo/613.png	Automatically upgraded to HTTPS
2b.zol-img.com.cn/manu_photo/1673.jpg	Automatically upgraded to HTTPS
2a.zol-img.com.cn/manu_photo/160.png	Automatically upgraded to HTTPS
2d.zol-img.com.cn/manu_photo/223.jpg	Automatically upgraded to HTTPS
2b.zol-img.com.cn/manu_photo/21.jpg	Automatically upgraded to HTTPS
2a.zol-img.com.cn/manu_photo/232.jpg	Automatically upgraded to HTTPS
2c.zol-img.com.cn/manu_photo/1474.jpg	Automatically upgraded to HTTPS
2d.zol-img.com.cn/manu_photo/227.jpg	Automatically upgraded to HTTPS
2b.zol-img.com.cn/manu_photo/125.jpg	Automatically upgraded to HTTPS

User Experience

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
影驰RTX 5070 Ti《识质存在》测试：4K画质拉满体验赛博养娃 `a > div.pics > figure.pic > img`	/t_s400x300/g8/M00/02/09/ChMkLWnnSO6IEPEoAAPIYuOzmTUAAIKK...	125 x 84 (1.49)	400 x 300 (1.33)
影驰RTX 5070 Ti《识质存在》测试：4K画质拉满体验赛博养娃 `a > div.pics > figure.pic > img`	/t_s400x300/g8/M00/02/05/ChMkLWnl-WiIdkNEAAw_tsU6WCkAAIJZ...	125 x 84 (1.49)	400 x 225 (1.78)
影驰RTX 5070 Ti《识质存在》测试：4K画质拉满体验赛博养娃 `a > div.pics > figure.pic > img`	/t_s400x300/g8/M00/01/01/ChMkLWncvMOIGQX5AA2bh-ewffYAAIEW...	125 x 84 (1.49)	400 x 225 (1.78)
div#top-login-box > div.side-box > div.userinfo > img `div#top-login-box > div.side-box > div.userinfo > img`	icon.zol-img.com.cn/m/images/2018icons/icon-face.png	30 x 58 (0.52)	58 x 58 (1.00)

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Unload event listeners are deprecated and will be removed.	hm.baidu.com/hm.js?84a68916f17b61bfae5954e308133587 line 1, col 274

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
/e=pageshow&t=1776812921031&t1=1776812919784&ns=zol.media...	`Failed to load resource: the server responded with a status of 404 ()`

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Mixed content

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●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

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

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

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
27	`Disallow: https://m.zol.com.cn/soft/comments/`	`Pattern should either be empty, start with "/" or "*"`
62	`Disallow: https://m.zol.com.cn/soft/comments/`	`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
body > img `body > 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

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`