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.

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
/_upload/article/images/84/5d/bb097d034f2991806a82d1a132b...	0.0 ms	12.8 MiB
/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb61333...	0.0 ms	1.5 MiB
/_upload/article/images/1f/30/5d2f956b4cef8496c52951b9d75...	0.0 ms	1.5 MiB
/_upload/article/images/45/fb/cf3164084befb27bd698441c4e6...	0.0 ms	1.3 MiB
/_upload/article/images/e8/93/f82c244042569297553c48b425d...	0.0 ms	941.8 KiB
/_upload/article/images/fc/47/24ee4a8344efac0073ae329087a...	0.0 ms	940.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main_img_1.png	0.0 ms	926.9 KiB
/_upload/article/images/d3/64/d371e15e4d3eaf1af023a0a93c3...	0.0 ms	906.3 KiB
/_upload/article/images/ee/34/f1ea3d0c4b359d0d0dc45989597...	0.0 ms	752.9 KiB
/_upload/article/images/e4/a4/a9682810451ba0eee789c138b14...	0.0 ms	650.0 KiB
/_upload/article/images/64/64/50e511e14427b11837cd6b7ce72...	0.0 ms	444.7 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main4_bg.jpg	0.0 ms	348.0 KiB
/_upload/article/images/22/36/c0c049cd48029cd47cb35b1fbfd...	0.0 ms	320.4 KiB
/_upload/article/images/9e/53/d3fe76c743e39931cf233cb82e7...	0.0 ms	177.9 KiB
/_upload/article/images/96/10/cc48d21e43ef9d3fad304bc1296...	0.0 ms	166.6 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/222.png	0.0 ms	149.0 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	0.0 ms	137.1 KiB
/_upload/article/images/42/93/9b2dd3da46f5ac13d935555fefa...	0.0 ms	128.3 KiB
/_upload/article/images/ce/e7/02286a304292a564176a3a51bad...	0.0 ms	118.7 KiB
/_upload/article/images/70/b5/046763ab4029bceca2ec1e300e0...	0.0 ms	109.3 KiB
/_upload/article/images/83/29/acf8ad1a46208606142e8d712ab...	0.0 ms	97.4 KiB
/_upload/article/images/c2/8e/5aed1a8f49598e05ea87adec6c5...	0.0 ms	93.7 KiB
/_upload/article/images/99/22/8e0f840a438dbbbe35693233087...	0.0 ms	89.7 KiB
/_upload/article/images/57/79/3f42359043e9989e9fd49f5caeb...	0.0 ms	84.1 KiB
/_upload/article/images/46/1d/e5476cb9470eb4427679af3419c...	0.0 ms	81.2 KiB
/_upload/article/images/2a/c3/78d833ac4831b3b77aae007eccb...	0.0 ms	72.6 KiB
/_upload/article/images/58/b2/951d8f494dc8b93155e129c1e29...	0.0 ms	62.0 KiB
/_upload/article/images/a6/a0/61bf29524e768c3d3b3c49609c8...	0.0 ms	61.7 KiB
/_upload/article/images/76/5a/6e4d47d4461c80762e38cebb61a...	0.0 ms	59.7 KiB
/_upload/article/images/1c/fa/9888c5ef4e12989af4e64f5b496...	0.0 ms	59.4 KiB
/_upload/article/images/00/99/5746f09943fe890af4a03ef2db8...	0.0 ms	59.3 KiB
/_upload/article/images/21/a8/a40c61b24a4081fad59d1dca911...	0.0 ms	58.4 KiB
/_upload/article/images/04/de/2b7fd2b146069e03920d1266828...	0.0 ms	51.6 KiB
/_upload/article/images/fc/b3/54a268d244f196d4991030013ae...	0.0 ms	51.4 KiB
/_upload/article/images/8a/dc/cafd0fed4749a1607f3deed4741...	0.0 ms	49.7 KiB
/_upload/article/images/70/e0/70b9885940608c92d348d955e5e...	0.0 ms	46.1 KiB
/_upload/article/images/98/8d/ea6569394429b85f494b2bf69ef...	0.0 ms	44.1 KiB
/_upload/article/images/19/ea/8223132c4959a06db1b01b23a57...	0.0 ms	39.3 KiB
/_upload/article/images/a2/a0/d1071822411abfda86d9145c3cc...	0.0 ms	38.8 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main5_bg.jpg	0.0 ms	38.3 KiB
/_upload/article/images/1a/bd/e68ad4a04e1cada63dbceb1431b...	0.0 ms	36.4 KiB
/_upload/article/images/d5/72/d8f996104b1cbd71887d6521286...	0.0 ms	35.8 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/base/tangr...	0.0 ms	35.6 KiB
/_upload/article/images/38/04/a6ef6cb04386a2482f05bf19945...	0.0 ms	35.3 KiB
/_upload/article/images/f3/28/236e13d6409abd5de8d934923ed...	0.0 ms	34.5 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.png	0.0 ms	34.3 KiB
/_upload/article/images/f8/7b/7c299d714fd4b71955d4612abc6...	0.0 ms	32.3 KiB
/_upload/article/images/2d/d5/39aedf0e400daf3737df8b2392c...	0.0 ms	31.5 KiB
/_upload/article/images/0a/47/0448de9a470f8005736ba8caf07...	0.0 ms	31.3 KiB
/_upload/article/images/22/8b/34271a0f4fcb8777a849c9f0079...	0.0 ms	30.9 KiB
fudan.edu.cn/_js/jquery-3.4.1.min.js	0.0 ms	30.3 KiB
/_upload/article/images/3c/67/978486e3402f819b9d84d1aeae4...	0.0 ms	29.1 KiB
/_upload/article/images/2c/62/86206da440d3b481576ffadc1a1...	0.0 ms	28.5 KiB
/_upload/article/images/8c/68/c97b8827435193412a5e0610fb0...	0.0 ms	27.0 KiB
/_upload/article/images/1f/9b/9c59284d497c8c3b4ef01a9d605...	0.0 ms	26.8 KiB
/_upload/article/images/72/e8/9f9be39d4120802e985d9812b2d...	0.0 ms	26.7 KiB
/_upload/article/images/0b/b4/ad85ac2c4a438497e78fb1bd577...	0.0 ms	25.6 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/icon.png	0.0 ms	24.6 KiB
/_upload/article/images/fe/3a/77827ed94d9582f7a0650550c82...	0.0 ms	23.7 KiB
fudan.edu.cn/_upload/site/00/02/2/logo.png	0.0 ms	22.8 KiB
/_upload/article/images/1e/91/2e106fc74e4480f6a468720f90a...	0.0 ms	21.7 KiB
/_upload/article/images/68/cb/714a98364748b2b680525fd9874...	0.0 ms	21.1 KiB
/_upload/article/images/dd/c0/65220e42441db15b058d29b81d1...	0.0 ms	19.3 KiB
/_upload/article/images/00/78/9069bce94527a8f5b5cc8f9afad...	0.0 ms	19.0 KiB
/_upload/article/images/f7/d2/cad96c984eef8651d38dc14e071...	0.0 ms	18.9 KiB
/_upload/article/images/60/c2/e33445f449dbb02440d8e52543e...	0.0 ms	18.1 KiB
/_upload/article/images/af/cc/70dd3e6d4769bfc80ae64728c7f...	0.0 ms	18.1 KiB
/_upload/article/images/b6/63/52276fed4aaa981636295b6aa4a...	0.0 ms	18.1 KiB
/_upload/article/images/b0/c9/99a34e6f4d9ab5e128fc45d2484...	0.0 ms	18.1 KiB
/_upload/article/images/71/96/4b15a263451cbbde4538380bf7e...	0.0 ms	17.6 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/head_bg.png	0.0 ms	17.6 KiB
/_upload/article/images/aa/fe/958eac154c989586162613b31f8...	0.0 ms	17.2 KiB
/_upload/article/images/75/85/7af62f54461595822213d4ca65c...	0.0 ms	16.4 KiB
/_upload/article/images/04/a0/897d9d814203a216741edb72ac5...	0.0 ms	15.8 KiB
/_upload/article/images/8b/69/7a8592114f028fa9f7b32d8c353...	0.0 ms	15.6 KiB
/_upload/article/images/f5/a2/d32d5d7e4a4fa47f6471d005e7e...	0.0 ms	15.1 KiB
/_upload/article/images/d8/73/934cc70d476ca5c9ba5bd1597f5...	0.0 ms	14.7 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/style.css	0.0 ms	14.3 KiB
/_upload/article/images/24/62/3c2dffb348faa081b8e9af2a4a0...	0.0 ms	14.0 KiB
/_upload/article/images/b6/87/fe633c6844e4a8e728dd61641dd...	0.0 ms	13.8 KiB
/_upload/article/images/80/af/47e69d734dc6a3de779064f2c97...	0.0 ms	13.3 KiB
/_upload/article/images/0b/46/9b7264524fabbd2c1d88755d6a7...	0.0 ms	12.7 KiB
/_upload/article/images/70/84/361741d34231834b4f60d7ac5ec...	0.0 ms	12.7 KiB
/_upload/article/images/eb/e3/7696a1c9402b9e1a11febdbfe12...	0.0 ms	12.6 KiB
/_upload/article/images/91/d9/cf35b3d64fc9a75d3008cabd5da...	0.0 ms	12.6 KiB
/_upload/article/images/bc/6d/f251444d4d90b8ebfd00ef61a34...	0.0 ms	12.5 KiB
/_upload/article/images/73/00/49eb85014bea997e88c187e7174...	0.0 ms	11.7 KiB
/_upload/article/images/ef/b7/7d755e5b4d05a4b0843989939a2...	0.0 ms	11.5 KiB
/_upload/article/images/6e/1e/060bc6cc4365bc23af7f7350fc8...	0.0 ms	11.5 KiB
/_upload/article/images/9b/47/fcd4652f42bbaeb885f0546589f...	0.0 ms	11.2 KiB
/_upload/article/images/ba/27/06ff4c2f46eb9fb6e1dd3dfa128...	0.0 ms	10.7 KiB
/_upload/article/images/f8/2e/5ad9496a4656931b03e83f0b902...	0.0 ms	10.5 KiB
/_upload/article/images/b8/ac/601de794475f8466900f972193e...	0.0 ms	10.5 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/video.css	0.0 ms	10.4 KiB
/_upload/article/images/5f/d3/15eaebcb482faaa2f215e978cee...	0.0 ms	9.6 KiB
/_upload/article/images/97/a5/8dec89dd4fd4ab0cfb7c014f55a...	0.0 ms	9.5 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/share_icon.png	0.0 ms	9.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/libs/jquery.sudy.js	0.0 ms	7.9 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.jpg	0.0 ms	7.9 KiB
/_upload/article/images/ed/6f/fc39d63942c2b30d0e227d667eb...	0.0 ms	7.7 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/search.js	0.0 ms	7.7 KiB
/_upload/article/images/d4/9e/bdc049d648099840daf154366ea...	0.0 ms	7.5 KiB
/_upload/article/images/02/34/9e12616943c3938223a5acb0f14...	0.0 ms	7.2 KiB
/_upload/article/images/12/5b/5abf57834616876b38c41e4adc8...	0.0 ms	7.0 KiB
/_upload/article/images/5d/00/fbc4e3254b2caa74b97d780fab9...	0.0 ms	6.9 KiB
/_upload/article/images/ae/bf/b72a6c43471ca7f53729574c5f3...	0.0 ms	6.8 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/share.js?v...	0.0 ms	6.5 KiB
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/flowplayer-3.1.1.min.js	0.0 ms	6.4 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.min.js	0.0 ms	6.0 KiB
/_upload/article/images/64/d2/9521558e45c79db6542e6220680...	0.0 ms	6.0 KiB
/_upload/article/images/06/ec/848c23f04ae68c67c1fc3a9e21a...	0.0 ms	5.9 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/main.js?var=2.0	0.0 ms	5.7 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/foot_logo.png	0.0 ms	5.7 KiB
fudan.edu.cn/_js/_portletPlugs/datepicker/js/jquery.datepicker.js	0.0 ms	5.4 KiB
/_upload/article/images/66/3d/00ea53564d4ba0806a4bf7966a2...	0.0 ms	5.4 KiB
/_upload/article/images/83/f9/7d86e77f4f1aae09ba974dc8d81...	0.0 ms	5.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/media.css	0.0 ms	5.1 KiB
/_upload/article/images/02/56/baefab8c4a65ad543baf0319077...	0.0 ms	5.0 KiB
/_upload/article/images/b1/14/2eb3b6a84ed0a8c463962c2f442...	0.0 ms	5.0 KiB
fudan.edu.cn/_css/_system/system_editor.css	0.0 ms	4.9 KiB
/_upload/article/images/dd/74/e993c70946ee9fdffc6ccf96a2d...	0.0 ms	4.7 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/bszsb2.png	0.0 ms	4.7 KiB
/_upload/article/images/e1/87/fcf3b3d64774b9c107b91e1f286...	0.0 ms	4.7 KiB
/_upload/article/images/51/65/44a74b0d4a36927a6e3f08cc66d...	0.0 ms	4.7 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/ajax-loader.gif	0.0 ms	4.4 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/111.png	0.0 ms	4.3 KiB
fudan.edu.cn/_js/jquery-migrate.min.js	0.0 ms	4.0 KiB
/_upload/tpl/00/04/4/template4/fancybox/js/jquery.fancybo...	0.0 ms	3.8 KiB
fudan.edu.cn/_js/_portletPlugs/simpleNews/css/simplenews.css	0.0 ms	3.8 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/slickarrow2.png	0.0 ms	3.4 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Filter.js	0.0 ms	3.1 KiB
fudan.edu.cn/_js/jquery.sudy.wp.visitcount.js	0.0 ms	2.8 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/style.css	0.0 ms	2.8 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/mobile.css	0.0 ms	2.4 KiB
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/jquery.easing.1.3.js	0.0 ms	2.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/comcus.js	0.0 ms	2.3 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/view/selec...	0.0 ms	2.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.css	0.0 ms	2.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/view/image_view.js	0.0 ms	2.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/shjbzx2.png	0.0 ms	2.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new2_icon.png	0.0 ms	2.0 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Fliter.css	0.0 ms	1.9 KiB
fudan.edu.cn/_js/_portletPlugs/sudyNavi/jquery.sudyNav.js	0.0 ms	1.8 KiB
fudan.edu.cn/_js/_portletPlugs/datepicker/css/datepicker.css	0.0 ms	1.8 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/app.js	0.0 ms	1.7 KiB
/_upload/tpl/00/0e/14/template14/static/api/css/slide_sha...	0.0 ms	1.6 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/play.png	0.0 ms	1.6 KiB
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/css/jquery.fancybox.css	0.0 ms	1.5 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/icon_roles.png	0.0 ms	1.5 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/view/slide...	0.0 ms	1.4 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/news_times_icon.png	0.0 ms	1.4 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.css	0.0 ms	1.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/css/share_style1_24.css	0.0 ms	1.2 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/component/...	0.0 ms	1.1 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/view/share...	0.0 ms	1.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/mousewheel.js	0.0 ms	1.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/view/view_base.js	0.0 ms	1.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.js	0.0 ms	965 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/api_base.js	0.0 ms	934 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new13_icon.png	0.0 ms	931 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new12_icon.png	0.0 ms	892 B
fudan.edu.cn/_js/_portletPlugs/sudyNavi/css/sudyNav.css	0.0 ms	876 B
fudan.edu.cn/_js/_portletPlugs/winfloat/js/winfloat.js	0.0 ms	864 B
fudan.edu.cn/_js/jquery.min.js	0.0 ms	832 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/slide_next.png	0.0 ms	832 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/sous.png	0.0 ms	744 B
fudan.edu.cn/_js/_portletPlugs/datepicker/js/datepicker_lang_HK.js	0.0 ms	739 B
/_upload/tpl/00/0e/14/template14/static/api/js/share/shar...	0.0 ms	728 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/common.js	0.0 ms	659 B
/_upload/tpl/00/0e/14/template14/static/api/js/share/slid...	0.0 ms	656 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/image_api.js	0.0 ms	647 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/select_api.js	0.0 ms	598 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new11_icon.png	0.0 ms	566 B
fudan.edu.cn/_css/_system/system.css	0.0 ms	316 B
fudan.edu.cn/_upload/site/00/02/2/style/5/5.css	0.0 ms	302 B
/_upload/tpl/00/0e/14/template14/static/api/js/trans/logg...	0.0 ms	298 B
fudan.edu.cn/_upload/site/1/style/1/1.css	0.0 ms	284 B
fudan.edu.cn/_visitcount?siteId=2&type=1&columnId=2	0.0 ms	204 B
fudan.edu.cn/_visitcount?siteId=2&type=2&columnId=591	0.0 ms	204 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]

items: [map[node:map[type:text value:Total] score:0.405498] map[node:map[boundingRect:map[bottom:1596 height:1048 left:0 right:1350 top:547 width:1350] lhId:page-44-DIV nodeLabel:新闻聚焦复旦大学第十四届读书节开幕，新教育全民阅读活动启动人间四月天，正是读书时。 2026-04-21(88) 【旦园光盒】复旦强基就读体验如何？物理、… path:1,HTML,1,BODY,2,DIV,10,DIV selector:body.main > div.body_b > div#container-1 snippet:<div class="wrapper main1" id="container-1"> type:node] score:0.405498 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:547 height:321 left:0 right:1350 top:227 width:1350] lhId:page-12-IMG nodeLabel:div#banner > div.inner > div.banner_nav2 > img path:1,HTML,1,BODY,2,DIV,7,DIV,0,DIV,2,DIV,0,IMG selector:div#banner > div.inner > div.banner_nav2 > img snippet:<img src="/_upload/tpl/00/0e/14/template14/images/222.png" width="100%" data-bd-imgshare-binded="1"> type:node]]] type:subitems]]]

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:41.268 source:map[column:29748 line:2 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:35.48 source:map[column:51353 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:2.111 source:map[column:52029 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:0.324 source:map[column:52087 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:0.282 source:map[column:52151 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:0.972 source:map[column:51375 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]] map[reflowTime:2.099 source:map[column:86511 line:1 type:source-location url:https://fudan.edu.cn/_js/jquery-3.4.1.min.js urlProvider:network]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/84/5d/bb097d034f2991806a82d1a132b...	13.1 MiB	12.8 MiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb61333...	1.5 MiB	1.4 MiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/45/fb/cf3164084befb27bd698441c4e6...	1.3 MiB	1.2 MiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/e8/93/f82c244042569297553c48b425d...	941.5 KiB	924.9 KiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/fc/47/24ee4a8344efac0073ae329087a...	939.8 KiB	826.3 KiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/d3/64/d371e15e4d3eaf1af023a0a93c3...	906.1 KiB	792.5 KiB
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`	/_upload/article/images/64/64/50e511e14427b11837cd6b7ce72...	445.8 KiB	331.2 KiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/22/36/c0c049cd48029cd47cb35b1fbfd...	321.0 KiB	303.0 KiB
复旦百科建筑人物书屋东宫今天的复旦校园里，子彬院与燕园之间隔着一片萋萋芳草。当年，这里却是神秘而旖旎的女生寝室——“东宫”。“东宫”建于1928年，… `body.main > div.body_b > div#container-4`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main4_bg.jpg	397.1 KiB	173.9 KiB
div.news_imgs > div.imgs > a.active > img `div.news_imgs > div.imgs > a.active > img`	/_upload/article/images/96/10/cc48d21e43ef9d3fad304bc1296...	167.2 KiB	153.2 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/c2/8e/5aed1a8f49598e05ea87adec6c5...	93.9 KiB	89.9 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/57/79/3f42359043e9989e9fd49f5caeb...	84.8 KiB	78.9 KiB
div#banner > div.inner > div.banner_nav2 > img `div#banner > div.inner > div.banner_nav2 > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/222.png	148.7 KiB	78.3 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/a6/a0/61bf29524e768c3d3b3c49609c8...	61.8 KiB	58.0 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1c/fa/9888c5ef4e12989af4e64f5b496...	59.4 KiB	54.6 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/04/de/2b7fd2b146069e03920d1266828...	51.5 KiB	47.8 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1a/bd/e68ad4a04e1cada63dbceb1431b...	36.1 KiB	32.0 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d5/72/d8f996104b1cbd71887d6521286...	35.6 KiB	31.6 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f3/28/236e13d6409abd5de8d934923ed...	34.3 KiB	30.3 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0a/47/0448de9a470f8005736ba8caf07...	31.1 KiB	25.9 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/3c/67/978486e3402f819b9d84d1aeae4...	29.1 KiB	23.6 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/2c/62/86206da440d3b481576ffadc1a1...	28.4 KiB	21.8 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/72/e8/9f9be39d4120802e985d9812b2d...	26.4 KiB	21.5 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0b/b4/ad85ac2c4a438497e78fb1bd577...	25.4 KiB	20.3 KiB
div.head-left > div.sitelogo > a > img `div.head-left > div.sitelogo > a > img`	fudan.edu.cn/_upload/site/00/02/2/logo.png	22.5 KiB	19.7 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/fe/3a/77827ed94d9582f7a0650550c82...	23.5 KiB	19.6 KiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/38/04/a6ef6cb04386a2482f05bf19945...	35.1 KiB	18.7 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/8c/68/c97b8827435193412a5e0610fb0...	26.9 KiB	17.5 KiB
EN 复旦概况师资队伍人才培养科学研究机构设置校园生活留学复旦 `body.main > div.body_b > div#header`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/head_bg.png	17.3 KiB	17.2 KiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/2d/d5/39aedf0e400daf3737df8b2392c...	31.2 KiB	15.7 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1e/91/2e106fc74e4480f6a468720f90a...	21.5 KiB	14.6 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f7/d2/cad96c984eef8651d38dc14e071...	18.7 KiB	12.4 KiB
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`	/_upload/article/images/1f/9b/9c59284d497c8c3b4ef01a9d605...	26.6 KiB	12.4 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/00/78/9069bce94527a8f5b5cc8f9afad...	18.8 KiB	12.0 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/60/c2/e33445f449dbb02440d8e52543e...	17.9 KiB	11.1 KiB
视觉复旦 “星火”生生不息心有所信，方能行远。相信，你的相信每一个真实奋斗的日子，历历在目。“博学而笃志，切问而近思”，是力行、是热爱、是探索。相信，你… `body.main > div.body_b > div#container-6 > div.inner`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.png	34.0 KiB	9.6 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d8/73/934cc70d476ca5c9ba5bd1597f5...	14.5 KiB	8.4 KiB
视觉复旦 “星火”生生不息心有所信，方能行远。相信，你的相信每一个真实奋斗的日子，历历在目。“博学而笃志，切问而近思”，是力行、是热爱、是探索。相信，你… `body.main > div.body_b > div#container-6`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.jpg	32.8 KiB	7.8 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/b6/87/fe633c6844e4a8e728dd61641dd...	14.0 KiB	6.9 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/80/af/47e69d734dc6a3de779064f2c97...	13.3 KiB	6.3 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/91/d9/cf35b3d64fc9a75d3008cabd5da...	12.6 KiB	5.7 KiB
div.shares > ul > li.i9 > a `div.shares > ul > li.i9 > a`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/share_icon.png	9.0 KiB	4.6 KiB
p.copyright > span > a > img `p.copyright > span > a > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/bszsb2.png	4.4 KiB	4.4 KiB
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/9b/47/fcd4652f42bbaeb885f0546589f...	11.4 KiB	4.3 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:449.104 label:Time to first byte subpart:timeToFirstByte] map[duration:1478.176 label:Resource load delay subpart:resourceLoadDelay] map[duration:2596.128 label:Resource load duration subpart:resourceLoadDuration] map[duration:59.817 label:Element render delay subpart:elementRenderDelay]]

lhId: page-1-IMG

nodeLabel: div.focus-container > div.focus-item > a > img

path: 1,HTML,1,BODY,2,DIV,7,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG

selector: div.focus-container > div.focus-item > a > img

snippet: <img src="/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb613336/8eace7ad-43b9-4…" data-bd-imgshare-binded="1">

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-1-IMG

nodeLabel: div.focus-container > div.focus-item > a > img

path: 1,HTML,1,BODY,2,DIV,7,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG

selector: div.focus-container > div.focus-item > a > img

snippet: <img src="/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb613336/8eace7ad-43b9-4…" data-bd-imgshare-binded="1">

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.

URL	Protocol
fudan.edu.cn/	http/1.1
fudan.edu.cn/_css/_system/system.css	http/1.1
fudan.edu.cn/_upload/site/1/style/1/1.css	http/1.1
fudan.edu.cn/_upload/site/00/02/2/style/5/5.css	http/1.1
fudan.edu.cn/_js/_portletPlugs/sudyNavi/css/sudyNav.css	http/1.1
fudan.edu.cn/_js/_portletPlugs/datepicker/css/datepicker.css	http/1.1
fudan.edu.cn/_js/_portletPlugs/simpleNews/css/simplenews.css	http/1.1
fudan.edu.cn/_js/jquery.min.js	http/1.1
fudan.edu.cn/_js/jquery.sudy.wp.visitcount.js	http/1.1
fudan.edu.cn/_js/_portletPlugs/winfloat/js/winfloat.js	http/1.1
fudan.edu.cn/_js/_portletPlugs/sudyNavi/jquery.sudyNav.js	http/1.1
fudan.edu.cn/_js/_portletPlugs/datepicker/js/jquery.datepicker.js	http/1.1
fudan.edu.cn/_js/_portletPlugs/datepicker/js/datepicker_lang_HK.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/common.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.min.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/style.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/mobile.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/media.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/video.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	http/1.1
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/css/jquery.fancybox.css	http/1.1
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/flowplayer-3.1.1.min.js	http/1.1
/_upload/tpl/00/04/4/template4/fancybox/js/jquery.fancybo...	http/1.1
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/jquery.easing.1.3.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main_img_1.png	http/1.1
fudan.edu.cn/_upload/site/00/02/2/logo.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/111.png	http/1.1
/_upload/article/images/af/cc/70dd3e6d4769bfc80ae64728c7f...	http/1.1
/_upload/article/images/9e/53/d3fe76c743e39931cf233cb82e7...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/222.png	http/1.1
/_upload/article/images/1f/9b/9c59284d497c8c3b4ef01a9d605...	http/1.1
/_upload/article/images/84/5d/bb097d034f2991806a82d1a132b...	http/1.1
/_upload/article/images/38/04/a6ef6cb04386a2482f05bf19945...	http/1.1
/_upload/article/images/2d/d5/39aedf0e400daf3737df8b2392c...	http/1.1
/_upload/article/images/22/36/c0c049cd48029cd47cb35b1fbfd...	http/1.1
/_upload/article/images/e8/93/f82c244042569297553c48b425d...	http/1.1
/_upload/article/images/80/af/47e69d734dc6a3de779064f2c97...	http/1.1
/_upload/article/images/b6/87/fe633c6844e4a8e728dd61641dd...	http/1.1
/_upload/article/images/91/d9/cf35b3d64fc9a75d3008cabd5da...	http/1.1
/_upload/article/images/9b/47/fcd4652f42bbaeb885f0546589f...	http/1.1
/_upload/article/images/96/10/cc48d21e43ef9d3fad304bc1296...	http/1.1
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/_upload/article/images/e4/a4/a9682810451ba0eee789c138b14...	http/1.1
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/_upload/article/images/42/93/9b2dd3da46f5ac13d935555fefa...	http/1.1
/_upload/article/images/22/8b/34271a0f4fcb8777a849c9f0079...	http/1.1
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/_upload/article/images/fc/b3/54a268d244f196d4991030013ae...	http/1.1
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/_upload/article/images/21/a8/a40c61b24a4081fad59d1dca911...	http/1.1
fudan.edu.cn/_css/_system/system_editor.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/bszsb2.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/shjbzx2.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/main.js?var=2.0	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/mousewheel.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/comcus.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/app.js	http/1.1
fudan.edu.cn/_visitcount?siteId=2&type=1&columnId=2	http/1.1
fudan.edu.cn/_js/jquery-3.4.1.min.js	http/1.1
fudan.edu.cn/_js/jquery-migrate.min.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/libs/jquery.sudy.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Fliter.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/style.css	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Filter.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/search.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/share.js?v...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/head_bg.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/icon_roles.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/sous.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/news_times_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new2_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main4_bg.jpg	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main5_bg.jpg	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.jpg	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main6_bg.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/play.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new13_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new12_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/foot_logo.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/share_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/slide_next.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/new11_icon.png	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/ajax-loader.gif	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/slickarrow2.png	http/1.1
/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb61333...	http/1.1
/_upload/article/images/64/64/50e511e14427b11837cd6b7ce72...	http/1.1
/_upload/article/images/fc/47/24ee4a8344efac0073ae329087a...	http/1.1
/_upload/article/images/d3/64/d371e15e4d3eaf1af023a0a93c3...	http/1.1
/_upload/article/images/45/fb/cf3164084befb27bd698441c4e6...	http/1.1
fudan.edu.cn/_s2/dhxglj/list.psp	http/1.1
/_upload/article/images/75/85/7af62f54461595822213d4ca65c...	http/1.1
/_upload/article/images/00/99/5746f09943fe890af4a03ef2db8...	http/1.1
/_upload/article/images/76/5a/6e4d47d4461c80762e38cebb61a...	http/1.1
/_upload/article/images/ba/27/06ff4c2f46eb9fb6e1dd3dfa128...	http/1.1
/_upload/article/images/bc/6d/f251444d4d90b8ebfd00ef61a34...	http/1.1
/_upload/article/images/8b/69/7a8592114f028fa9f7b32d8c353...	http/1.1
fudan.edu.cn/_visitcount?siteId=2&type=2&columnId=591	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/share/shar...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/view/share...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/share/slid...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/view/slide...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/select_api.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/view/selec...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/image_api.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/view/image_view.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/base/tangr...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/share/api_base.js	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/js/view/view_base.js	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/component/...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/static/api/css/share_style1_24.css	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/css/slide_sha...	http/1.1
/_upload/tpl/00/0e/14/template14/static/api/js/trans/logg...	http/1.1
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/favicon.ico	http/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.

URL	Transfer Size	Duration
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	137.1 KiB	329 ms
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/jquery.easing.1.3.js	2.3 KiB	129 ms
/_upload/tpl/00/04/4/template4/fancybox/js/jquery.fancybo...	3.8 KiB	129 ms
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/js/flowplayer-3.1.1.min.js	6.4 KiB	169 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.min.js	6.0 KiB	169 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/common.js	659 B	129 ms
fudan.edu.cn/_js/_portletPlugs/datepicker/js/datepicker_lang_HK.js	739 B	129 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.js	965 B	129 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/style.css	14.3 KiB	249 ms
fudan.edu.cn/_js/_portletPlugs/datepicker/js/jquery.datepicker.js	5.4 KiB	169 ms
fudan.edu.cn/_js/_portletPlugs/sudyNavi/jquery.sudyNav.js	1.8 KiB	129 ms
fudan.edu.cn/_js/_portletPlugs/winfloat/js/winfloat.js	864 B	129 ms
fudan.edu.cn/_js/jquery.sudy.wp.visitcount.js	2.8 KiB	129 ms
fudan.edu.cn/_js/jquery.min.js	832 B	129 ms
fudan.edu.cn/_upload/tpl/00/04/4/template4/fancybox/css/jquery.fancybox.css	1.5 KiB	129 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/video.css	10.4 KiB	209 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/media.css	5.1 KiB	169 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/mobile.css	2.4 KiB	129 ms
fudan.edu.cn/_css/_system/system_editor.css	4.9 KiB	169 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/slick.css	1.3 KiB	129 ms
fudan.edu.cn/_js/jquery-3.4.1.min.js	30.3 KiB
fudan.edu.cn/_js/_portletPlugs/datepicker/css/datepicker.css	1.8 KiB	129 ms
fudan.edu.cn/_js/_portletPlugs/simpleNews/css/simplenews.css	3.8 KiB	129 ms
fudan.edu.cn/_js/_portletPlugs/sudyNavi/css/sudyNav.css	876 B	129 ms
fudan.edu.cn/_upload/site/00/02/2/style/5/5.css	302 B	129 ms
fudan.edu.cn/_js/jquery-migrate.min.js	4.0 KiB
fudan.edu.cn/_upload/site/1/style/1/1.css	284 B	129 ms
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/libs/jquery.sudy.js	7.9 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/style.css	2.8 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Fliter.css	1.9 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/extends.css	2.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/search.js	7.7 KiB	89 ms
fudan.edu.cn/_css/_system/system.css	316 B
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/filter/Filter.js	3.1 KiB

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

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

Element	Layout shift score
新闻聚焦复旦大学第十四届读书节开幕，新教育全民阅读活动启动人间四月天，正是读书时。 2026-04-21(88) 【旦园光盒】复旦强基就读体验如何？物理、… `body.main > div.body_b > div#container-1`	0.405

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

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: 30 ms 7.5 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/extends/libs/jquery.sudy.js	7.6 KiB	3.2 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/main.js?var=2.0	5.3 KiB	2.3 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/fws_seach/search.js	7.3 KiB	2.0 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: 130 ms 140.7 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/js/video.js	136.7 KiB	119.4 KiB
/_upload/tpl/00/0e/14/template14/static/api/js/base/tangr...	35.2 KiB	21.3 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Other	3.1 s
Script Evaluation	828 ms
Style & Layout	318 ms
Rendering	179 ms
Script Parsing & Compilation	46 ms
Parse HTML & CSS	44 ms
Garbage Collection	7.3 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

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 2.1 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/style.css	14.3 KiB	2.1 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: 0.0 ms 10.1 KiB

URL	Transfer Size	Est Savings
fudan.edu.cn/_upload/tpl/00/0e/14/template14/css/video.css	10.1 KiB	10.1 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.

URL	Transfer Size
/_upload/article/images/84/5d/bb097d034f2991806a82d1a132b...	12.8 MiB
/_upload/article/images/55/7a/404a16a941e0b3ee98dfdb61333...	1.5 MiB
/_upload/article/images/1f/30/5d2f956b4cef8496c52951b9d75...	1.5 MiB
/_upload/article/images/45/fb/cf3164084befb27bd698441c4e6...	1.3 MiB
/_upload/article/images/e8/93/f82c244042569297553c48b425d...	941.8 KiB
/_upload/article/images/fc/47/24ee4a8344efac0073ae329087a...	940.1 KiB
fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/main_img_1.png	926.9 KiB
/_upload/article/images/d3/64/d371e15e4d3eaf1af023a0a93c3...	906.3 KiB
/_upload/article/images/ee/34/f1ea3d0c4b359d0d0dc45989597...	752.9 KiB
/_upload/article/images/e4/a4/a9682810451ba0eee789c138b14...	650.0 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
div#banner > div.inner > div.banner_nav2 > img `div#banner > div.inner > div.banner_nav2 > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/222.png
body.main > div.body_b > div.banner_nav > img `body.main > div.body_b > div.banner_nav > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/images/111.png
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/2a/c3/78d833ac4831b3b77aae007eccb...
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/ce/e7/02286a304292a564176a3a51bad...
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/99/22/8e0f840a438dbbbe35693233087...
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`	/_upload/article/images/46/1d/e5476cb9470eb4427679af3419c...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/8c/68/c97b8827435193412a5e0610fb0...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/8c/68/c97b8827435193412a5e0610fb0...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f3/28/236e13d6409abd5de8d934923ed...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f3/28/236e13d6409abd5de8d934923ed...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/fe/3a/77827ed94d9582f7a0650550c82...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/fe/3a/77827ed94d9582f7a0650550c82...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d5/72/d8f996104b1cbd71887d6521286...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1a/bd/e68ad4a04e1cada63dbceb1431b...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1a/bd/e68ad4a04e1cada63dbceb1431b...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/c2/8e/5aed1a8f49598e05ea87adec6c5...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/04/de/2b7fd2b146069e03920d1266828...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/a6/a0/61bf29524e768c3d3b3c49609c8...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/04/de/2b7fd2b146069e03920d1266828...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1c/fa/9888c5ef4e12989af4e64f5b496...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1c/fa/9888c5ef4e12989af4e64f5b496...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/72/e8/9f9be39d4120802e985d9812b2d...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/72/e8/9f9be39d4120802e985d9812b2d...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0b/b4/ad85ac2c4a438497e78fb1bd577...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/57/79/3f42359043e9989e9fd49f5caeb...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0a/47/0448de9a470f8005736ba8caf07...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/3c/67/978486e3402f819b9d84d1aeae4...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/60/c2/e33445f449dbb02440d8e52543e...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/60/c2/e33445f449dbb02440d8e52543e...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/1e/91/2e106fc74e4480f6a468720f90a...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/00/78/9069bce94527a8f5b5cc8f9afad...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/2c/62/86206da440d3b481576ffadc1a1...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f7/d2/cad96c984eef8651d38dc14e071...
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d8/73/934cc70d476ca5c9ba5bd1597f5...
div.head-left > div.sitelogo > a > img `div.head-left > div.sitelogo > a > img`	fudan.edu.cn/_upload/site/00/02/2/logo.png
p.copyright > span > a > img `p.copyright > span > a > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/shjbzx2.png
p.copyright > span > a > img `p.copyright > span > a > img`	fudan.edu.cn/_upload/tpl/00/0e/14/template14/img/bszsb2.png

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

●Document request latency

●Optimize DOM size

●Font display

●Optimize viewport for mobile

●JavaScript execution time 0.7 s

●Avoid long main-thread tasks 10 long tasks found

●Avoid non-composited animations 64 animated elements found

●Network Requests

●Network Round Trip Times 200 ms

●Server Backend Latencies 60 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 110 ms

○INP breakdown

○User Timing marks and measures

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
14 `li.news > div.news_box > div.news_date > div.news_year`
16：00 `div.news_wz > div.news_con > div.news_text > p.t1`
14 `li.news > div.news_box > div.news_date > div.news_year`
10:00-11:30 `div.news_wz > div.news_con > div.news_text > p.t1`
13 `li.news > div.news_box > div.news_date > div.news_year`
15：30-17：30 `div.news_wz > div.news_con > div.news_text > p.t1`

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
div.head-left > div.sitelogo > a > img `div.head-left > div.sitelogo > a > img`
body.main > div.body_b > div.banner_nav > img `body.main > div.body_b > div.banner_nav > img`
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`
div#banner > div.inner > div.banner_nav2 > img `div#banner > div.inner > div.banner_nav2 > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_imgs > div.imgs > a.active > img `div.news_imgs > div.imgs > a.active > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > 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
div.focus > div.focus-container > div.focus-item > a `div.focus > div.focus-container > div.focus-item > a`
div.shares > ul > li.i1 > a `div.shares > ul > li.i1 > a`
div.shares > ul > li.i2 > a `div.shares > ul > li.i2 > a`
div.shares > ul > li.i3 > a `div.shares > ul > li.i3 > a`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
li.news > div.news_box > div.news_imgs > a.imgs `li.news > div.news_box > div.news_imgs > a.imgs`
div.shares > ul > li.i1 > a `div.shares > ul > li.i1 > a`
div.shares > ul > li.i2 > a `div.shares > ul > li.i2 > a`
div.shares > ul > li.i3 > a `div.shares > ul > li.i3 > a`
div.shares > ul > li.i4 > a `div.shares > ul > li.i4 > a`
div.shares > ul > li.i5 > a `div.shares > ul > li.i5 > a`
div.shares > ul > li.i6 > a `div.shares > ul > li.i6 > a`
div.shares > ul > li.i7 > a `div.shares > ul > li.i7 > a`
div.shares > ul > li.i8 > a `div.shares > ul > li.i8 > a`
div.shares > ul > li.i9 > a `div.shares > ul > li.i9 > a`
div.foot-con > p.copyright > span > a `div.foot-con > p.copyright > span > a`
div.foot-con > p.copyright > span > a `div.foot-con > p.copyright > span > a`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

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

●Buttons have an accessible name

●Input buttons have discernible text.

●Document has a `<title>` element

●Links are distinguishable without relying on color.

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

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

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`[aria-*]` attributes match their roles

○`button`, `link`, and `menuitem` elements have accessible names

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

○Deprecated ARIA roles were not used

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○`[aria-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

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

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○`[role]` values are valid

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

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

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

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

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

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

○ARIA IDs are unique

○No form fields have multiple labels

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

○`<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

○Form elements have associated labels

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

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

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

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

○Elements with visible text labels have matching accessible names.

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

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

Best Practices

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)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/ee/34/f1ea3d0c4b359d0d0dc45989597...	320 x 954 (0.34)	780 x 954 (0.82)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/e4/a4/a9682810451ba0eee789c138b14...	320 x 954 (0.34)	780 x 954 (0.82)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/1f/30/5d2f956b4cef8496c52951b9d75...	320 x 954 (0.34)	780 x 954 (0.82)
ul > li.i3 > div.con > img `ul > li.i3 > div.con > img`	/_upload/article/images/9e/53/d3fe76c743e39931cf233cb82e7...	90 x 599 (0.15)	635 x 599 (1.06)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/70/b5/046763ab4029bceca2ec1e300e0...	320 x 599 (0.53)	490 x 599 (0.82)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/42/93/9b2dd3da46f5ac13d935555fefa...	320 x 385 (0.83)	300 x 385 (0.78)
div.news_imgs > div.imgs > a > img `div.news_imgs > div.imgs > a > img`	/_upload/article/images/19/ea/8223132c4959a06db1b01b23a57...	320 x 320 (1.00)	290 x 320 (0.91)
ul > li.i5 > div.con > img `ul > li.i5 > div.con > img`	/_upload/article/images/dd/c0/65220e42441db15b058d29b81d1...	90 x 260 (0.35)	260 x 260 (1.00)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/0b/46/9b7264524fabbd2c1d88755d6a7...	320 x 239 (1.34)	281 x 239 (1.18)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/04/a0/897d9d814203a216741edb72ac5...	320 x 320 (1.00)	209 x 320 (0.65)
ul > li.i7 > div.con > img `ul > li.i7 > div.con > img`	/_upload/article/images/21/a8/a40c61b24a4081fad59d1dca911...	90 x 239 (0.38)	254 x 239 (1.06)
ul > li.i1 > div.con > img `ul > li.i1 > div.con > img`	/_upload/article/images/af/cc/70dd3e6d4769bfc80ae64728c7f...	90 x 240 (0.38)	240 x 240 (1.00)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/02/34/9e12616943c3938223a5acb0f14...	320 x 240 (1.33)	240 x 240 (1.00)
ul > li.i2 > div.con > img `ul > li.i2 > div.con > img`	/_upload/article/images/70/e0/70b9885940608c92d348d955e5e...	90 x 240 (0.38)	240 x 240 (1.00)
ul > li.i4 > div.con > img `ul > li.i4 > div.con > img`	/_upload/article/images/b6/63/52276fed4aaa981636295b6aa4a...	90 x 240 (0.38)	240 x 240 (1.00)
ul > li.i6 > div.con > img `ul > li.i6 > div.con > img`	/_upload/article/images/b0/c9/99a34e6f4d9ab5e128fc45d2484...	90 x 240 (0.38)	240 x 240 (1.00)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/83/29/acf8ad1a46208606142e8d712ab...	320 x 239 (1.34)	237 x 239 (0.99)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/73/00/49eb85014bea997e88c187e7174...	320 x 195 (1.64)	287 x 195 (1.47)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/24/62/3c2dffb348faa081b8e9af2a4a0...	320 x 239 (1.34)	225 x 239 (0.94)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/fc/b3/54a268d244f196d4991030013ae...	320 x 239 (1.34)	198 x 239 (0.83)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f5/a2/d32d5d7e4a4fa47f6471d005e7e...	320 x 238 (1.34)	198 x 238 (0.83)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f8/7b/7c299d714fd4b71955d4612abc6...	320 x 240 (1.33)	180 x 240 (0.75)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/a2/a0/d1071822411abfda86d9145c3cc...	320 x 239 (1.34)	179 x 239 (0.75)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/b8/ac/601de794475f8466900f972193e...	320 x 239 (1.34)	178 x 239 (0.74)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/6e/1e/060bc6cc4365bc23af7f7350fc8...	320 x 239 (1.34)	176 x 239 (0.74)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/12/5b/5abf57834616876b38c41e4adc8...	320 x 239 (1.34)	173 x 239 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/06/ec/848c23f04ae68c67c1fc3a9e21a...	320 x 239 (1.34)	173 x 239 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/aa/fe/958eac154c989586162613b31f8...	320 x 238 (1.34)	172 x 238 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/5f/d3/15eaebcb482faaa2f215e978cee...	320 x 238 (1.34)	172 x 238 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/b1/14/2eb3b6a84ed0a8c463962c2f442...	320 x 239 (1.34)	171 x 239 (0.72)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/02/56/baefab8c4a65ad543baf0319077...	320 x 239 (1.34)	169 x 239 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/ef/b7/7d755e5b4d05a4b0843989939a2...	320 x 238 (1.34)	169 x 238 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/ed/6f/fc39d63942c2b30d0e227d667eb...	320 x 239 (1.34)	168 x 239 (0.70)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/e1/87/fcf3b3d64774b9c107b91e1f286...	320 x 239 (1.34)	168 x 239 (0.70)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/98/8d/ea6569394429b85f494b2bf69ef...	320 x 238 (1.34)	168 x 238 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/eb/e3/7696a1c9402b9e1a11febdbfe12...	320 x 239 (1.34)	167 x 239 (0.70)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/97/a5/8dec89dd4fd4ab0cfb7c014f55a...	320 x 239 (1.34)	166 x 239 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/8a/dc/cafd0fed4749a1607f3deed4741...	320 x 238 (1.34)	165 x 238 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/dd/74/e993c70946ee9fdffc6ccf96a2d...	320 x 239 (1.34)	164 x 239 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/64/d2/9521558e45c79db6542e6220680...	320 x 238 (1.34)	164 x 238 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/51/65/44a74b0d4a36927a6e3f08cc66d...	320 x 239 (1.34)	161 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/83/f9/7d86e77f4f1aae09ba974dc8d81...	320 x 239 (1.34)	161 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/66/3d/00ea53564d4ba0806a4bf7966a2...	320 x 239 (1.34)	160 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/ae/bf/b72a6c43471ca7f53729574c5f3...	320 x 239 (1.34)	160 x 239 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/d4/9e/bdc049d648099840daf154366ea...	320 x 238 (1.34)	159 x 238 (0.67)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/75/85/7af62f54461595822213d4ca65c...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/00/99/5746f09943fe890af4a03ef2db8...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/76/5a/6e4d47d4461c80762e38cebb61a...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/ba/27/06ff4c2f46eb9fb6e1dd3dfa128...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/bc/6d/f251444d4d90b8ebfd00ef61a34...	320 x 121 (2.64)	263 x 121 (2.17)
div.sub_box > div.sub_boxcon > div.sub_imgs > img `div.sub_box > div.sub_boxcon > div.sub_imgs > img`	/_upload/article/images/8b/69/7a8592114f028fa9f7b32d8c353...	320 x 121 (2.64)	263 x 121 (2.17)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/68/cb/714a98364748b2b680525fd9874...	320 x 171 (1.87)	114 x 171 (0.67)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/71/96/4b15a263451cbbde4538380bf7e...	320 x 148 (2.16)	109 x 148 (0.74)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/70/84/361741d34231834b4f60d7ac5ec...	320 x 149 (2.15)	103 x 149 (0.69)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/f8/2e/5ad9496a4656931b03e83f0b902...	320 x 143 (2.24)	101 x 143 (0.71)
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`	/_upload/article/images/5d/00/fbc4e3254b2caa74b97d780fab9...	320 x 141 (2.27)	100 x 141 (0.71)

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?2358de8fcde33676f65b406ffd4460cc line 1, col 274

●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

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○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
div#header > div.inner > div.mod > a.navi-aside-toggle `div#header > div.inner > div.mod > a.navi-aside-toggle`
< `div.inner > div.artpic_banner > div.focus > a.focus-navigation`
> `div.inner > div.artpic_banner > div.focus > a.focus-navigation`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.artpic_banner > div.focus > div.focus-pagination > a.focus-page `div.artpic_banner > div.focus > div.focus-pagination > a.focus-page`
div.shares > ul > li.i1 > a `div.shares > ul > li.i1 > a`
微信 `ul > li.i1 > span > a`
div.shares > ul > li.i3 > a `div.shares > ul > li.i3 > a`
抖音 `ul > li.i3 > span > a`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_weixin`
div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone `div.news_con > span#share_list > div.bdsharebuttonbox > a.bds_qzone`
body.main > div#bdSharePopup_selectshare1776898039899box > div.bdselect_share_head > a.bdselect_share_dialog_close `body.main > div#bdSharePopup_selectshare1776898039899box > div.bdselect_share_head > a.bdselect_share_dialog_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.head-left > div.sitelogo > a > img `div.head-left > div.sitelogo > a > img`
body.main > div.body_b > div.banner_nav > img `body.main > div.body_b > div.banner_nav > img`
div.focus-container > div.focus-item > a > img `div.focus-container > div.focus-item > a > img`
div#banner > div.inner > div.banner_nav2 > img `div#banner > div.inner > div.banner_nav2 > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a.imgs > img `div.news_box > div.news_imgs > a.imgs > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_imgs > div.imgs > a.active > img `div.news_imgs > div.imgs > a.active > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
div.news_box > div.news_imgs > a > img `div.news_box > div.news_imgs > a > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > img`
a.news_box > div.news_imgs > div.news_imgsbox > img `a.news_box > div.news_imgs > div.news_imgsbox > 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`