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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

48

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.

RequestCache TTLTransfer Size
www.shanghai.gov.cn/assets2020/img/sswghcg.png0.0 ms980.8 KiB
www.shanghai.gov.cn/assets2020/img/logo-big.png0.0 ms811.7 KiB
wza.shanghai.gov.cn/a11y/modules/pinyin.js?v=2.6.8.10.0 ms560.0 KiB
www.shanghai.gov.cn/assets2020/img/yshj-2.jpg0.0 ms330.7 KiB
www.shanghai.gov.cn/assets2020/img/zcgkjyshj.jpg0.0 ms251.5 KiB
www.shanghai.gov.cn/assets2020/img/iphone.jpg0.0 ms164.0 KiB
www.shanghai.gov.cn/assets2020/img/sczt11.jpg0.0 ms124.6 KiB
www.shanghai.gov.cn/assets2020/img/ylfw-1.jpg0.0 ms120.3 KiB
www.shanghai.gov.cn/assets2020/img/zsrx-1.jpg0.0 ms109.1 KiB
www.shanghai.gov.cn/assets2020/img/rkfz-1.jpg0.0 ms102.5 KiB
www.shanghai.gov.cn/assets2020/img/publicity2.png0.0 ms95.7 KiB
www.shanghai.gov.cn/assets2020/img/swzcsyt.jpg0.0 ms93.1 KiB
www.shanghai.gov.cn/assets2020/js/ETUI/jquery.min.1.12.4.js0.0 ms88.0 KiB
www.shanghai.gov.cn/assets2020/img/wx.jpg0.0 ms87.0 KiB
www.shanghai.gov.cn/assets2020/img/publicity4.png0.0 ms86.2 KiB
wza.shanghai.gov.cn/a11y/modules/darkreader.js?v=2.6.8.10.0 ms84.4 KiB
www.shanghai.gov.cn/assets2020/img/publicity5.png0.0 ms83.8 KiB
www.shanghai.gov.cn/assets2020/img/publicity6.png0.0 ms83.3 KiB
wza.shanghai.gov.cn/a11y/modules/jquery.js?v=2.6.8.10.0 ms82.6 KiB
www.shanghai.gov.cn/assets2020/img/zfbz-10.jpg0.0 ms82.2 KiB
www.shanghai.gov.cn/assets2020/img/2025wls.jpg0.0 ms80.6 KiB
www.shanghai.gov.cn/assets2020/img/publicity3.png0.0 ms73.7 KiB
www.shanghai.gov.cn/assets2020/js/ETUI/ETUI3.min.js0.0 ms71.3 KiB
www.shanghai.gov.cn/assets2020/img/footer.jpg0.0 ms70.4 KiB
wza.shanghai.gov.cn/a11y/modules/trout.js?v=2.6.8.10.0 ms67.4 KiB
www.shanghai.gov.cn/assets2020/img/publicity1.png0.0 ms64.9 KiB
wza.shanghai.gov.cn/a11y/modules/splayer.js?v=2.6.8.10.0 ms59.3 KiB
www.shanghai.gov.cn/assets2020/js/footer.js0.0 ms58.1 KiB
www.shanghai.gov.cn/assets2020/plugin/share/jquery.share.min.js0.0 ms45.5 KiB
wza.shanghai.gov.cn/a11y/modules/big5.js?v=2.6.8.10.0 ms45.2 KiB
www.shanghai.gov.cn/assets2020/css/iconfont.woff2?t=17210248301000.0 ms44.2 KiB
www.shanghai.gov.cn/assets2020/plugin/owl/owl.carousel.min.js0.0 ms43.9 KiB
www.shanghai.gov.cn/assets2020/img/wzabst.png0.0 ms35.8 KiB
voice.shanghai.gov.cn/js/gov_msc.js0.0 ms35.1 KiB
www.shanghai.gov.cn/assets2020/img/2025ndzfwzgzbb.png0.0 ms34.3 KiB
stat.shanghai.gov.cn/stat/traffic_v2.js0.0 ms27.0 KiB
www.shanghai.gov.cn/assets2020/img/icon1.png0.0 ms23.1 KiB
www.shanghai.gov.cn/assets2020/img/icon3.png0.0 ms23.0 KiB
www.shanghai.gov.cn/assets2020/img/icon2.png0.0 ms22.5 KiB
www.shanghai.gov.cn/assets2020/img/icon4.png0.0 ms22.4 KiB
www.shanghai.gov.cn/assets2020/css/style2020.css0.0 ms22.0 KiB
www.shanghai.gov.cn/assets2020/css/ETUI/ETUI3.min.css0.0 ms20.6 KiB
www.shanghai.gov.cn/assets2020/img/ico2.png0.0 ms18.6 KiB
www.shanghai.gov.cn/assets2020/plugin/infinitypush/jquery.ma.infinitypush.js0.0 ms15.9 KiB
www.shanghai.gov.cn/assets2020/img/logo1020.png0.0 ms14.2 KiB
wza.shanghai.gov.cn/a11y/schubert.js0.0 ms14.0 KiB
www.shanghai.gov.cn/voice/js/voice-recorder.js0.0 ms13.6 KiB
stat.shanghai.gov.cn/js/tongyi/jhelper/language2.js0.0 ms12.0 KiB
www.shanghai.gov.cn/assets2020/img/wzgbyhzj.jpg0.0 ms11.1 KiB
www.shanghai.gov.cn/assets2020/css/style2020-medio.css0.0 ms11.0 KiB
www.shanghai.gov.cn/assets2020/js/ywlogin.js0.0 ms10.4 KiB
www.shanghai.gov.cn/assets2020/img/phone.png0.0 ms7.9 KiB
www.shanghai.gov.cn/voice/img/icon-voice-microphone.png0.0 ms7.2 KiB
www.shanghai.gov.cn/exposure/jiucuo.png?v=31000000440.0 ms4.5 KiB
www.shanghai.gov.cn/assets2020/img/diamond2.png0.0 ms4.2 KiB
www.shanghai.gov.cn/assets2020/img/diamond1.png0.0 ms4.2 KiB
www.shanghai.gov.cn/assets2020/img/diamond3.png0.0 ms4.1 KiB
www.shanghai.gov.cn/assets2020/img/diamond4.png0.0 ms4.0 KiB
www.shanghai.gov.cn/assets2020/img/diamond5.png0.0 ms4.0 KiB
www.shanghai.gov.cn/assets2020/img/ico3.png0.0 ms3.8 KiB
www.shanghai.gov.cn/assets2020/img/man1.png0.0 ms3.7 KiB
www.shanghai.gov.cn/assets2020/img/man4.png0.0 ms3.7 KiB
www.shanghai.gov.cn/assets2020/img/man5.png0.0 ms3.7 KiB
www.shanghai.gov.cn/assets2020/img/man3.png0.0 ms3.7 KiB
www.shanghai.gov.cn/assets2020/img/man2.png0.0 ms3.6 KiB
www.shanghai.gov.cn/assets2020/css/iconfont.css0.0 ms2.8 KiB
voice.shanghai.gov.cn/rec/api/prometheus.js?appkey=5286386.0 s6.8 KiB
www.shanghai.gov.cn/voice/css/custom.css0.0 ms2.5 KiB
www.shanghai.gov.cn/voice/js/voice-main.js0.0 ms2.5 KiB
www.shanghai.gov.cn/assets2020/plugin/owl/owl.carousel.css0.0 ms2.4 KiB
www.shanghai.gov.cn/newshanghai/img/ga.png0.0 ms2.3 KiB
wza.shanghai.gov.cn/a11y/css/default/trout.css0.0 ms2.2 KiB
www.shanghai.gov.cn/exposure/jiucuo.js0.0 ms2.0 KiB
www.shanghai.gov.cn/assets2020/plugin/share/share.min.css0.0 ms1.6 KiB
www.shanghai.gov.cn/assets2020/img/caret.png0.0 ms1.6 KiB
service.shanghai.gov.cn/JianSuo/js/sh_search_service.js0.0 ms1.5 KiB
www.shanghai.gov.cn/assets2020/js/main.js0.0 ms1.5 KiB
www.shanghai.gov.cn/assets2020/plugin/infinitypush/jquery.ma.infinitypush.css0.0 ms1.4 KiB
service.shanghai.gov.cn/ywtbdl/js/sh_ywtb.js0.0 ms1.4 KiB
www.shanghai.gov.cn/assets2020/img/lt.png0.0 ms1.1 KiB
stat.shanghai.gov.cn/js/ew_tracker.js0.0 ms918 B
www.shanghai.gov.cn/newshanghai2018/assets/img/icp.png0.0 ms882 B
www.shanghai.gov.cn/assets2020/img/dh.png0.0 ms847 B
www.shanghai.gov.cn/assets2020/img/rg.png0.0 ms785 B
jhelper.shanghai.gov.cn/wzagjt/a11y/access.js0.0 ms612 B
stat.shanghai.gov.cn/wzagjt/jhelper_wza.js0.0 ms409 B
stat.shanghai.gov.cn/js/point_js/point_52.js0.0 ms388 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
www.shanghai.gov.cn/assets2020/css/iconfont.woff2?t=1721024830100660 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.

URLResource SizeEst Savings
“实干绘答卷 接力新蓝图”上海“十四五”规划成果系列发布会 li > a > div.ImgCrop > img
www.shanghai.gov.cn/assets2020/img/sswghcg.png980.3 KiB923.1 KiB
上海市人民政府 div.contain > div.midd-top > p.logo-icon > img
www.shanghai.gov.cn/assets2020/img/logo-big.png811.2 KiB807.1 KiB
营商环境 li > a > div.img-message > img
www.shanghai.gov.cn/assets2020/img/yshj-2.jpg330.1 KiB318.7 KiB
政策公开讲 li > a > div.ImgCrop > img
www.shanghai.gov.cn/assets2020/img/zcgkjyshj.jpg251.0 KiB215.6 KiB
经营主体生产活动 li > a > div.img-message > img
www.shanghai.gov.cn/assets2020/img/sczt11.jpg124.0 KiB112.6 KiB
上海市人民政府 海纳百川 · 追求卓越 · 开明睿智 · 大气谦和 本站 本站 站群 搜一下 body.bg-box > div#container > div#header > div.head
www.shanghai.gov.cn/assets2020/img/iphone.jpg163.4 KiB111.9 KiB
养老服务 li > a > div.img-message > img
www.shanghai.gov.cn/assets2020/img/ylfw-1.jpg119.8 KiB108.4 KiB
招生入学 li > a > div.img-message > img
www.shanghai.gov.cn/assets2020/img/zsrx-1.jpg108.6 KiB97.2 KiB
人口发展 li > a > div.img-message > img
www.shanghai.gov.cn/assets2020/img/rkfz-1.jpg101.9 KiB90.5 KiB
涉外政策 li > a > div.img-message > img
www.shanghai.gov.cn/assets2020/img/swzcsyt.jpg92.5 KiB81.1 KiB
住房保障 li > a > div.img-message > img
www.shanghai.gov.cn/assets2020/img/zfbz-10.jpg81.7 KiB70.3 KiB
适老化无障碍服务认证标识 div.footer-info > div.foot-flex-ageeing-pic > a > img
www.shanghai.gov.cn/assets2020/img/wzabst.png35.3 KiB34.4 KiB
@国务院 我来说 li > a > div.ImgCrop > img
www.shanghai.gov.cn/assets2020/img/2025wls.jpg80.0 KiB30.8 KiB
个人办事 li.piece-b > div.bock01 > i > img
www.shanghai.gov.cn/assets2020/img/icon1.png22.5 KiB21.3 KiB
部门办事 li.piece-b > div.bock01 > i > img
www.shanghai.gov.cn/assets2020/img/icon3.png22.5 KiB21.2 KiB
法人办事 li.piece-b > div.bock01 > i > img
www.shanghai.gov.cn/assets2020/img/icon2.png21.9 KiB20.7 KiB
办事热点 li.piece-b > div.bock01 > i > img
www.shanghai.gov.cn/assets2020/img/icon4.png21.8 KiB20.6 KiB
党政机关 div.footer-info > div.foot-flex-ageeing-pic > a > img
www.shanghai.gov.cn/assets2020/img/ico2.png18.0 KiB17.6 KiB
一网通办 div.clearfix > div#login > a.logo-inder > img
www.shanghai.gov.cn/assets2020/img/logo1020.png13.7 KiB11.7 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:2749.2019997558596 label:Time to first byte subpart:timeToFirstByte] map[duration:1955.2200002441407 label:Resource load delay subpart:resourceLoadDelay] map[duration:2092.036 label:Resource load duration subpart:resourceLoadDuration] map[duration:21.328 label:Element render delay subpart:elementRenderDelay]]
lhId: page-5-DIV
nodeLabel: 上海市人民政府 海纳百川 · 追求卓越 · 开明睿智 · 大气谦和 本站 本站 站群 搜一下
path: 1,HTML,1,BODY,2,DIV,1,DIV,2,DIV
selector: body.bg-box > div#container > div#header > div.head
snippet: <div class="head">

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-5-DIV
nodeLabel: 上海市人民政府 海纳百川 · 追求卓越 · 开明睿智 · 大气谦和 本站 本站 站群 搜一下
path: 1,HTML,1,BODY,2,DIV,1,DIV,2,DIV
selector: body.bg-box > div#container > div#header > div.head
snippet: <div class="head">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
www.shanghai.gov.cn/http/1.1
www.shanghai.gov.cn/assets2020/css/ETUI/ETUI3.min.csshttp/1.1
www.shanghai.gov.cn/assets2020/plugin/infinitypush/jquery.ma.infinitypush.csshttp/1.1
www.shanghai.gov.cn/assets2020/plugin/owl/owl.carousel.csshttp/1.1
www.shanghai.gov.cn/assets2020/css/style2020.csshttp/1.1
www.shanghai.gov.cn/assets2020/css/style2020-medio.csshttp/1.1
www.shanghai.gov.cn/assets2020/plugin/share/share.min.csshttp/1.1
www.shanghai.gov.cn/assets2020/js/ETUI/jquery.min.1.12.4.jshttp/1.1
www.shanghai.gov.cn/assets2020/js/ETUI/ETUI3.min.jshttp/1.1
www.shanghai.gov.cn/assets2020/plugin/infinitypush/jquery.ma.infinitypush.jshttp/1.1
www.shanghai.gov.cn/assets2020/img/logo1020.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/logo-big.pnghttp/1.1
www.shanghai.gov.cn/voice/css/custom.csshttp/1.1
www.shanghai.gov.cn/assets2020/img/icon1.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/man1.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/man2.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/man3.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/man4.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/man5.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/icon2.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/diamond1.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/diamond2.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/diamond3.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/diamond4.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/diamond5.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/icon3.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/icon4.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/zcgkjyshj.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/2025wls.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/sswghcg.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/yshj-2.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/swzcsyt.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/sczt11.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/rkfz-1.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/zsrx-1.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/zfbz-10.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/ylfw-1.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/publicity5.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/publicity2.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/publicity3.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/publicity1.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/publicity4.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/publicity6.pnghttp/1.1
www.shanghai.gov.cn/assets2020/js/footer.jshttp/1.1
www.shanghai.gov.cn/assets2020/img/wzgbyhzj.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/2025ndzfwzgzbb.pnghttp/1.1
www.shanghai.gov.cn/assets2020/plugin/owl/owl.carousel.min.jshttp/1.1
www.shanghai.gov.cn/assets2020/js/main.jshttp/1.1
www.shanghai.gov.cn/assets2020/plugin/share/jquery.share.min.jshttp/1.1
www.shanghai.gov.cn/assets2020/js/ywlogin.jshttp/1.1
www.shanghai.gov.cn/assets2020/css/iconfont.csshttp/1.1
www.shanghai.gov.cn/assets2020/img/iphone.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/caret.pnghttp/1.1
www.shanghai.gov.cn/voice/img/icon-voice-microphone.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/lt.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/rg.pnghttp/1.1
www.shanghai.gov.cn/assets2020/css/iconfont.woff2?t=1721024830100http/1.1
www.shanghai.gov.cn/exposure/jiucuo.jshttp/1.1
www.shanghai.gov.cn/newshanghai2018/assets/img/icp.pnghttp/1.1
www.shanghai.gov.cn/newshanghai/img/ga.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/wx.jpghttp/1.1
www.shanghai.gov.cn/assets2020/img/phone.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/wzabst.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/ico2.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/ico3.pnghttp/1.1
www.shanghai.gov.cn/assets2020/img/footer.jpghttp/1.1
www.shanghai.gov.cn/exposure/jiucuo.png?v=3100000044http/1.1
www.shanghai.gov.cn/voice/js/voice-main.jshttp/1.1
www.shanghai.gov.cn/voice/js/voice-recorder.jshttp/1.1
wza.shanghai.gov.cn/a11y/schubert.jshttp/1.1
wza.shanghai.gov.cn/a11y/modules/jquery.js?v=2.6.8.1http/1.1
www.shanghai.gov.cn/assets2020/img/dh.pnghttp/1.1
wza.shanghai.gov.cn/a11y/modules/pinyin.js?v=2.6.8.1http/1.1
wza.shanghai.gov.cn/a11y/modules/big5.js?v=2.6.8.1http/1.1
wza.shanghai.gov.cn/a11y/modules/trout.js?v=2.6.8.1http/1.1
wza.shanghai.gov.cn/a11y/modules/splayer.js?v=2.6.8.1http/1.1
wza.shanghai.gov.cn/a11y/css/default/trout.csshttp/1.1
wza.shanghai.gov.cn/a11y/modules/darkreader.js?v=2.6.8.1http/1.1
www.shanghai.gov.cn/newshanghai/2018project/ywtb/assets/img/ico/favicon.pnghttp/1.1

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates
value: No additional origins are good candidates for preconnecting

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
www.shanghai.gov.cn/assets2020/js/ETUI/jquery.min.1.12.4.js88.0 KiB1.3 s
www.shanghai.gov.cn/assets2020/plugin/infinitypush/jquery.ma.infinitypush.js15.9 KiB651 ms
www.shanghai.gov.cn/assets2020/css/style2020.css22.0 KiB1.3 s
www.shanghai.gov.cn/assets2020/css/style2020-medio.css11.0 KiB860 ms
www.shanghai.gov.cn/assets2020/plugin/share/share.min.css1.6 KiB651 ms
www.shanghai.gov.cn/assets2020/plugin/owl/owl.carousel.css2.4 KiB651 ms
www.shanghai.gov.cn/assets2020/plugin/infinitypush/jquery.ma.infinitypush.css1.4 KiB651 ms
www.shanghai.gov.cn/assets2020/css/ETUI/ETUI3.min.css20.6 KiB860 ms
www.shanghai.gov.cn/assets2020/css/iconfont.css2.8 KiB233 ms

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.6 s
URLTime Spent
sh.gov.cn/953 ms
www.shanghai.gov.cn/630 ms
www.shanghai.gov.cn/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: 1.5 s
URLTime Spent
www.shanghai.gov.cn/1.6 s

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 210 ms 86.0 KiB
URLTransfer SizeEst Savings
www.shanghai.gov.cn/assets2020/js/ETUI/ETUI3.min.js70.7 KiB28.5 KiB
www.shanghai.gov.cn/assets2020/plugin/share/jquery.share.min.js44.9 KiB20.6 KiB
voice.shanghai.gov.cn/js/gov_msc.js34.8 KiB14.3 KiB
www.shanghai.gov.cn/voice/js/voice-recorder.js13.0 KiB6.7 KiB
www.shanghai.gov.cn/assets2020/plugin/infinitypush/jquery.ma.infinitypush.js15.3 KiB6.0 KiB
stat.shanghai.gov.cn/js/tongyi/jhelper/language2.js11.5 KiB4.3 KiB
voice.shanghai.gov.cn/rec/api/prometheus.js?appkey=526.5 KiB2.9 KiB
www.shanghai.gov.cn/assets2020/js/ywlogin.js9.8 KiB2.7 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 210 ms 37.7 KiB
URLTransfer SizeEst Savings
www.shanghai.gov.cn/assets2020/css/ETUI/ETUI3.min.css20.0 KiB19.0 KiB
www.shanghai.gov.cn/assets2020/css/style2020.css21.4 KiB18.7 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 288.3 KiB
URLTransfer SizeEst Savings
wza.shanghai.gov.cn/a11y/modules/darkreader.js?v=2.6.8.184.2 KiB69.9 KiB
www.shanghai.gov.cn/assets2020/js/ETUI/ETUI3.min.js69.9 KiB52.7 KiB
wza.shanghai.gov.cn/a11y/modules/jquery.js?v=2.6.8.182.3 KiB41.6 KiB
wza.shanghai.gov.cn/a11y/modules/trout.js?v=2.6.8.167.1 KiB37.3 KiB
www.shanghai.gov.cn/assets2020/js/ETUI/jquery.min.1.12.4.js87.4 KiB30.7 KiB
wza.shanghai.gov.cn/a11y/modules/splayer.js?v=2.6.8.159.1 KiB29.6 KiB
voice.shanghai.gov.cn/js/gov_msc.js34.1 KiB26.6 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
www.shanghai.gov.cn/1.4 s275 ms7.0 ms
Unattributable707 ms10 ms0.0 ms
www.shanghai.gov.cn/assets2020/js/footer.js330 ms239 ms8.2 ms
www.shanghai.gov.cn/assets2020/js/ETUI/jquery.min.1.12.4.js327 ms263 ms12 ms
wza.shanghai.gov.cn/a11y/schubert.js188 ms165 ms2.3 ms
wza.shanghai.gov.cn/a11y/modules/pinyin.js?v=2.6.8.1187 ms105 ms81 ms
www.shanghai.gov.cn/assets2020/js/ETUI/ETUI3.min.js88 ms42 ms11 ms
stat.shanghai.gov.cn/stat/traffic_v2.js74 ms63 ms9.4 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 Evaluation1.3 s
Other1.1 s
Style & Layout544 ms
Rendering240 ms
Script Parsing & Compilation214 ms
Parse HTML & CSS205 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 12.1 KiB
URLTransfer SizeEst Savings
www.shanghai.gov.cn/assets2020/css/style2020.css22.0 KiB5.7 KiB
www.shanghai.gov.cn/assets2020/css/style2020-medio.css11.0 KiB3.9 KiB
www.shanghai.gov.cn/assets2020/css/ETUI/ETUI3.min.css20.6 KiB2.6 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
www.shanghai.gov.cn/assets2020/img/sswghcg.png980.8 KiB
www.shanghai.gov.cn/assets2020/img/logo-big.png811.7 KiB
wza.shanghai.gov.cn/a11y/modules/pinyin.js?v=2.6.8.1560.0 KiB
www.shanghai.gov.cn/assets2020/img/yshj-2.jpg330.7 KiB
www.shanghai.gov.cn/assets2020/img/zcgkjyshj.jpg251.5 KiB
www.shanghai.gov.cn/assets2020/img/iphone.jpg164.0 KiB
www.shanghai.gov.cn/assets2020/img/sczt11.jpg124.6 KiB
www.shanghai.gov.cn/assets2020/img/ylfw-1.jpg120.3 KiB
www.shanghai.gov.cn/assets2020/img/zsrx-1.jpg109.1 KiB
www.shanghai.gov.cn/assets2020/img/rkfz-1.jpg102.5 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
上海市人民政府 div.contain > div.midd-top > p.logo-icon > img
www.shanghai.gov.cn/assets2020/img/logo-big.png
一网通办 div.clearfix > div#login > a.logo-inder > img
www.shanghai.gov.cn/assets2020/img/logo1020.png
个人办事 li.piece-b > div.bock01 > i > img
www.shanghai.gov.cn/assets2020/img/icon1.png
法人办事 li.piece-b > div.bock01 > i > img
www.shanghai.gov.cn/assets2020/img/icon2.png
部门办事 li.piece-b > div.bock01 > i > img
www.shanghai.gov.cn/assets2020/img/icon3.png
办事热点 li.piece-b > div.bock01 > i > img
www.shanghai.gov.cn/assets2020/img/icon4.png
div.footer-info > div.foot-flex-ageeing-pic > span#_span_jiucuo > img div.footer-info > div.foot-flex-ageeing-pic > span#_span_jiucuo > img
www.shanghai.gov.cn/exposure/jiucuo.png?v=3100000044
适老化无障碍服务认证标识 div.footer-info > div.foot-flex-ageeing-pic > a > img
www.shanghai.gov.cn/assets2020/img/wzabst.png
上海市互联网举报平台 div.footer-info > div.foot-flex-ageeing-pic > a > img
www.shanghai.gov.cn/assets2020/img/ico3.png
党政机关 div.footer-info > div.foot-flex-ageeing-pic > a > img
www.shanghai.gov.cn/assets2020/img/ico2.png
沪ICP备2021016245号-1 div.foot1 > p > a > img
www.shanghai.gov.cn/newshanghai2018/assets/img/icp.png
沪公网安备 31010102004544号 div.foot1 > p > a > img
www.shanghai.gov.cn/newshanghai/img/ga.png

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

●Layout shift culprits
●Optimize DOM size
●Forced reflow
●Optimize viewport for mobile
●Avoid long main-thread tasks 10 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 220 ms
●Server Backend Latencies 120 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid large layout shifts 2 layout shifts found
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
73

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

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
集成式发布 政府信息公开 div#main > div.contain > div.messager > ul.nav

Some ARIA child roles must be contained by specific parent roles to properly perform their intended accessibility functions. Learn more about ARIA roles and required parent element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
集成式发布 div.messager > ul.nav > li.active > a
政府信息公开 div.messager > ul.nav > li > a

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
ENGLISH div.top-soccoeer-overflow > ul.Senior-edition > li > a
日本語 div.top-soccoeer-overflow > ul.Senior-edition > li > a
한국어 div.top-soccoeer-overflow > ul.Senior-edition > li > a
DEUTSCH div.top-soccoeer-overflow > ul.Senior-edition > li > a
FRANÇAIS div.top-soccoeer-overflow > ul.Senior-edition > li > a
ESPAÑOL div.top-soccoeer-overflow > ul.Senior-edition > li > a
PORTUGUÊS div.top-soccoeer-overflow > ul.Senior-edition > li > a
РУССКИЙ div.top-soccoeer-overflow > ul.Senior-edition > li > a
العربية div.top-soccoeer-overflow > ul.Senior-edition > li > a
ITALIANO div.top-soccoeer-overflow > ul.Senior-edition > li > a
登录 div.clearfix > div#login > span#sign > a#dl
注册 div.clearfix > div#login > span#sign > a
关怀版 div.clearfix > div#login > span#sign > a#cniil_wza
职业资格 li.piece-b > div.bock01 > p > a
证件办理 li.piece-b > div.bock01 > p > a
交通出行 li.piece-b > div.bock01 > p > a
医疗卫生 li.piece-b > div.bock01 > p > a
设立变更 li.piece-b > div.bock01 > p > a
准营准办 li.piece-b > div.bock01 > p > a
资质认证 li.piece-b > div.bock01 > p > a
年检年审 li.piece-b > div.bock01 > p > a
上海市公安局 li.piece-b > div.bock01 > p > a
上海市民政局 li.piece-b > div.bock01 > p > a
上海市司法局 li.piece-b > div.bock01 > p > a
上海市财政局 li.piece-b > div.bock01 > p > a
民生保障服务专区 li.piece-b > div.bock01 > p > a
长三角“一网通办” li.piece-b > div.bock01 > p > a
要闻 ul.today > li > a > label
要闻 ul.today > li > a > label
要闻 ul.today > li > a > label
要闻 ul.today > li > a > label
要闻 ul.today > li > a > label
政府信息公开 ul.nav > li > a > h2

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.footer-info > div.foot-flex-ageeing-pic > span#_span_jiucuo > img div.footer-info > div.foot-flex-ageeing-pic > span#_span_jiucuo > img

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 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
集成式发布 div.contain > div.messager > ul.nav > li.active
政府信息公开 div.contain > div.messager > ul.nav > li

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

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-*]` 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
●Select elements have associated label elements.
●ARIA attributes are used as specified for the element's role
●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
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Deprecated ARIA roles were not used
●ARIA IDs are unique
●Uses ARIA roles only on compatible elements
●Image elements do not have `[alt]` attributes that are redundant text.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○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 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
○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
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○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
www.shanghai.gov.cn/Allowed
my.shanghai.gov.cn/SHMailSubscription/subscribeAllowed with warning

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)
“实干绘答卷 接力新蓝图”上海“十四五”规划成果系列发布会 li > a > div.ImgCrop > img
www.shanghai.gov.cn/assets2020/img/sswghcg.png382 x 300 (1.27)1100 x 790 (1.39)
@国务院 我来说 li > a > div.ImgCrop > img
www.shanghai.gov.cn/assets2020/img/2025wls.jpg382 x 300 (1.27)935 x 610 (1.53)
营商环境 li > a > div.img-message > img
www.shanghai.gov.cn/assets2020/img/yshj-2.jpg186 x 123 (1.51)716 x 424 (1.69)
经营主体生产活动 li > a > div.img-message > img
www.shanghai.gov.cn/assets2020/img/sczt11.jpg186 x 123 (1.51)716 x 424 (1.69)
政策公开讲 li > a > div.ImgCrop > img
www.shanghai.gov.cn/assets2020/img/zcgkjyshj.jpg382 x 300 (1.27)550 x 395 (1.39)

General

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
wza.shanghai.gov.cn/a11y/modules/pinyin.js?v=2.6.8.1
●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
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No browser errors logged to the console
●Ensure CSP is effective against XSS attacks
●Ensure proper origin isolation with COOP
●Mitigate clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Use a strong HSTS policy
82

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
登录 div.clearfix > div#login > span#sign > a#dl
关怀版 div.clearfix > div#login > span#sign > a#cniil_wza
无障碍 div#login > ul.top-link > li#wzagjt > a#cniil_wza
关怀版 div#login > ul.top-link > li#ghb > a#slb
div#search > div#searchForm > div.input > a div#search > div#searchForm > div.input > a
市拥军优属基金会 li.dropdown > ul.dropdown-menu > li > a
中国银行保险监督管理委员会 li.dropdown > ul.dropdown-menu > li > a
适老化无障碍服务认证标识 div.footer-cont > div.footer-info > div.foot-flex-ageeing-pic > a
“中国上海”微信公众号 div.share1 > ul > li.sidebar > a
中国上海移动端二维码 div.share1 > ul > li.sidebar > a
div.share1 > ul > li.sidebar > a div.share1 > ul > li.sidebar > a
div.share1 > ul > li.sidebar > a div.share1 > ul > li.sidebar > a
关闭 div.piao > div.piao-left > p > a.close
关闭 div.piao > div.piao-right > p > a.close

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.footer-info > div.foot-flex-ageeing-pic > span#_span_jiucuo > img div.footer-info > div.foot-flex-ageeing-pic > span#_span_jiucuo > img

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

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●Document has a valid `hreflang`
○robots.txt is valid
○Document has a valid `rel=canonical`

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