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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.

63

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
/__local/C/3B/84/08EEB6F08A00F3F1D7B73FA1B6B_82C646DC_722...3600.0 s7.1 MiB
/__local/8/4C/1C/5B3C238770A31DF60ADEB58AB58_A220221C_58A...3600.0 s5.5 MiB
/__local/F/54/EB/381C6DC9A67E90614C83D457D08_F020FBB2_588...3600.0 s5.5 MiB
/__local/0/AC/7F/B300D8A3351FB9783D5333D757D_93E85EC2_2C5...3600.0 s2.8 MiB
www.econ.sdu.edu.cn/images/huangjilei.png3600.0 s2.3 MiB
www.econ.sdu.edu.cn/images/huanying2026xintongxue.png3600.0 s2.1 MiB
/__local/6/61/1A/CB9188E109C7DA542125CC0EA3F_4D370C10_CFD...3600.0 s831.8 KiB
/__local/D/3D/36/5078704EC77B5DC791CC0BF6E69_F86BAF62_CD0...3600.0 s820.5 KiB
/__local/B/B9/74/9483BE063D1CCF5649965B3CA7D_BEEBD8BB_B6A...3600.0 s731.1 KiB
/__local/E/B8/E5/C1E74CB98D6846F2C15DD1846A9_D9AF41F6_A25...3600.0 s649.9 KiB
www.econ.sdu.edu.cn/images/WechatIMG334.jpg3600.0 s578.9 KiB
www.econ.sdu.edu.cn/images/list_box_jiaoshou_bg.jpg3600.0 s430.6 KiB
/__local/6/C9/F5/1D45148CDEAB2549FD4A6257A43_05ED30AE_62E...3600.0 s396.1 KiB
/__local/C/06/53/8928C7FF81CF4C9ED3BA6C55439_21550289_5AD...3600.0 s363.9 KiB
/__local/E/FF/F2/C679422E6673A03E8A21FEA8A8D_A79E03AC_413...3600.0 s261.2 KiB
www.econ.sdu.edu.cn/images/abd60f700598ca3ae829311df3875f13.jpg3600.0 s255.9 KiB
/__local/E/31/01/1BB47B3A73B1655D5E65F291BEC_CAB3A052_39E...3600.0 s232.2 KiB
www.econ.sdu.edu.cn/images/9ce9f6fe8b25f13836b46b7849ee2cf0.jpg3600.0 s203.0 KiB
www.econ.sdu.edu.cn/images/61d200d58fa8013cf57f7fefdffdf071.png3600.0 s185.6 KiB
www.econ.sdu.edu.cn/images/zwtp_001.jpg3600.0 s171.5 KiB
/__local/9/6B/F0/1AF9E3C44035507B76218677456_CF202D58_1A6...3600.0 s106.0 KiB
/__local/6/22/B9/05F0E55ED8DC0DD5AA80D3AC8B5_DA08D7BC_17F...3600.0 s96.2 KiB
/__local/0/92/70/56AB1ACE6F6EBBE4B01BACDCFBE_2EC027FF_14F...3600.0 s84.2 KiB
/__local/9/6D/7A/E32E8E51872FFDAD26F13382D85_8961C877_138...3600.0 s78.5 KiB
www.econ.sdu.edu.cn/images/container05_bg.jpg3600.0 s72.2 KiB
www.econ.sdu.edu.cn/images/zt4.jpg3600.0 s62.2 KiB
www.econ.sdu.edu.cn/images/zt3.jpg3600.0 s60.8 KiB
/__local/4/A4/58/46936A0E669BC1129F76E55CB61_81548B27_EFE...3600.0 s60.4 KiB
www.econ.sdu.edu.cn/images/ztt_jsxt.png3600.0 s56.2 KiB
/__local/A/6F/E4/2E44CAF8F318D74E97BA618F1C4_550318AC_D84...3600.0 s54.5 KiB
www.econ.sdu.edu.cn/images/jingyuanyingxiang003.png3600.0 s47.0 KiB
/__local/C/EE/5F/3E6F371DE113D47D4ADF8E01A57_B6EE7F3A_B6E...3600.0 s46.1 KiB
www.econ.sdu.edu.cn/images/footer_bg.jpg3600.0 s43.7 KiB
/__local/F/15/E9/74A15DB439F3884A6442F965CEE_C6C831D5_995...3600.0 s38.8 KiB
www.econ.sdu.edu.cn/images/zt2.jpg3600.0 s35.3 KiB
www.econ.sdu.edu.cn/js/a_jquery.js3600.0 s30.7 KiB
www.econ.sdu.edu.cn/js/swiper.min.js3600.0 s29.0 KiB
www.econ.sdu.edu.cn/css/a_style.css3600.0 s26.8 KiB
/__local/A/D0/9E/608F5211437C14DF65D4C86DB3F_E338B458_68F...3600.0 s26.6 KiB
www.econ.sdu.edu.cn/images/jywx0330.jpg3600.0 s20.0 KiB
www.econ.sdu.edu.cn/images/footer_logo.png3600.0 s19.6 KiB
www.econ.sdu.edu.cn/images/container04_bg.jpg3600.0 s15.5 KiB
www.econ.sdu.edu.cn/images/logo2.png3600.0 s13.3 KiB
www.econ.sdu.edu.cn/js/a_miso.js3600.0 s10.9 KiB
www.econ.sdu.edu.cn/images/list_box_jiaoshou1_bg.png3600.0 s10.0 KiB
www.econ.sdu.edu.cn/images/22/08/16/1onvzcwhz7/jyxy_01.jpg3600.0 s9.0 KiB
www.econ.sdu.edu.cn/images/22/08/16/1onvzcwhz7/jcsg_01.jpg3600.0 s8.5 KiB
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon07.png3600.0 s7.3 KiB
www.econ.sdu.edu.cn/js/a_animate.js3600.0 s6.9 KiB
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon01.png3600.0 s6.8 KiB
www.econ.sdu.edu.cn/css/a_animate.css3600.0 s6.7 KiB
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon08.png3600.0 s6.5 KiB
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon04.png3600.0 s6.3 KiB
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon02.png3600.0 s6.3 KiB
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon03.png3600.0 s6.2 KiB
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon06.png3600.0 s6.1 KiB
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon05.png3600.0 s5.5 KiB
www.econ.sdu.edu.cn/js/slide.js3600.0 s3.7 KiB
www.econ.sdu.edu.cn/images/banner_r.png3600.0 s3.0 KiB
www.econ.sdu.edu.cn/images/banner_l.png3600.0 s3.0 KiB
www.econ.sdu.edu.cn/js/a_style.js3600.0 s2.7 KiB
www.econ.sdu.edu.cn/css/swiper.min.css3600.0 s2.6 KiB
www.econ.sdu.edu.cn/images/swiper-button-next1.png3600.0 s1.9 KiB
www.econ.sdu.edu.cn/images/swiper-button-prev1.png3600.0 s1.9 KiB
www.econ.sdu.edu.cn/images/xsbg_icon03.png3600.0 s1.7 KiB
www.econ.sdu.edu.cn/images/jgrgs_li_on.png3600.0 s1.7 KiB
www.econ.sdu.edu.cn/images/xsbg_icon02.png3600.0 s1.7 KiB
www.econ.sdu.edu.cn/images/jsgd_li_on.png3600.0 s1.7 KiB
www.econ.sdu.edu.cn/images/ewm_icon01.png3600.0 s1.7 KiB
www.econ.sdu.edu.cn/images/xsbg_icon01.png3600.0 s1.6 KiB
www.econ.sdu.edu.cn/system/resource/js/ajax.js3600.0 s1.6 KiB
www.econ.sdu.edu.cn/system/resource/js/news/mp4video.js3600.0 s1.6 KiB
www.econ.sdu.edu.cn/images/ewm_arrow.png3600.0 s1.6 KiB
www.econ.sdu.edu.cn/images/search_btn.png3600.0 s1.5 KiB
www.econ.sdu.edu.cn/images/icon_02.png3600.0 s1.5 KiB
www.econ.sdu.edu.cn/images/icon_01.png3600.0 s1.5 KiB
www.econ.sdu.edu.cn/images/search_white.svg0.0 ms1.1 KiB
www.econ.sdu.edu.cn/images/banner_li_on.png3600.0 s1.4 KiB
www.econ.sdu.edu.cn/images/arrow_down.svg0.0 ms1.1 KiB
www.econ.sdu.edu.cn/images/nav_btn.png3600.0 s1.4 KiB
www.econ.sdu.edu.cn/images/jsgd_li.png3600.0 s1.4 KiB
www.econ.sdu.edu.cn/images/jgrgs_li.png3600.0 s1.4 KiB
www.econ.sdu.edu.cn/system/resource/js/base64.js3600.0 s1.3 KiB
www.econ.sdu.edu.cn/images/search-btn.svg0.0 ms1.0 KiB
www.econ.sdu.edu.cn/system/resource/js/centerCutImg.js3600.0 s1.2 KiB
www.econ.sdu.edu.cn/system/resource/js/dynclicks.js3600.0 s1.2 KiB
www.econ.sdu.edu.cn/system/resource/js/counter.js3600.0 s1.1 KiB
www.econ.sdu.edu.cn/images/close-btn.svg0.0 ms675 B
www.econ.sdu.edu.cn/system/resource/js/formfunc.js3600.0 s836 B
www.econ.sdu.edu.cn/system/resource/js/openlink.js3600.0 s695 B
www.econ.sdu.edu.cn/_sitegray/_sitegray.js3600.0 s572 B
www.econ.sdu.edu.cn/_sitegray/_sitegray_d.css3600.0 s433 B
www.econ.sdu.edu.cn/index.vsb.css3600.0 s432 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:25.356 source:map[column:6672 line:1 type:source-location url:https://www.econ.sdu.edu.cn/js/swiper.min.js urlProvider:network]] map[reflowTime:95.624 source:map[column:16257 line:1 type:source-location url:https://www.econ.sdu.edu.cn/js/swiper.min.js urlProvider:network]] map[reflowTime:2.484 source:map[column:20331 line:1 type:source-location url:https://www.econ.sdu.edu.cn/js/swiper.min.js urlProvider:network]] map[reflowTime:0.426 source:map[column:46879 line:1 type:source-location url:https://www.econ.sdu.edu.cn/js/swiper.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.

URLResource SizeEst Savings
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/C/3B/84/08EEB6F08A00F3F1D7B73FA1B6B_82C646DC_722...7.1 MiB7.1 MiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/8/4C/1C/5B3C238770A31DF60ADEB58AB58_A220221C_58A...5.5 MiB5.5 MiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/F/54/EB/381C6DC9A67E90614C83D457D08_F020FBB2_588...5.5 MiB5.5 MiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
/__local/0/AC/7F/B300D8A3351FB9783D5333D757D_93E85EC2_2C5...2.8 MiB2.7 MiB
div.swiper-wrapper > div.swiper-slide > a > img div.swiper-wrapper > div.swiper-slide > a > img
www.econ.sdu.edu.cn/images/huangjilei.png2.3 MiB2.2 MiB
div.swiper-wrapper > div.swiper-slide > a > img div.swiper-wrapper > div.swiper-slide > a > img
www.econ.sdu.edu.cn/images/huanying2026xintongxue.png2.1 MiB2.0 MiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/D/3D/36/5078704EC77B5DC791CC0BF6E69_F86BAF62_CD0...820.1 KiB816.6 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
/__local/6/61/1A/CB9188E109C7DA542125CC0EA3F_4D370C10_CFD...831.4 KiB758.7 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
/__local/B/B9/74/9483BE063D1CCF5649965B3CA7D_BEEBD8BB_B6A...730.7 KiB682.2 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
/__local/E/B8/E5/C1E74CB98D6846F2C15DD1846A9_D9AF41F6_A25...649.5 KiB636.9 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/WechatIMG334.jpg578.5 KiB548.5 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
/__local/6/C9/F5/1D45148CDEAB2549FD4A6257A43_05ED30AE_62E...395.7 KiB347.2 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
/__local/C/06/53/8928C7FF81CF4C9ED3BA6C55439_21550289_5AD...363.4 KiB266.4 KiB
div.swiper-wrapper > div.swiper-slide > a > img div.swiper-wrapper > div.swiper-slide > a > img
www.econ.sdu.edu.cn/images/abd60f700598ca3ae829311df3875f13.jpg255.5 KiB235.8 KiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/E/31/01/1BB47B3A73B1655D5E65F291BEC_CAB3A052_39E...231.7 KiB228.2 KiB
教授观点 View MORE+ 牛晓飞教授团队 张群姿教授团队 黄继雷 余东华、李墨源、姜伟 段文奇助理研究员、姜明明教授、綦建红教授 刘东日副教授 高磊副教… body > section.index_miso > div.n_jiaoshou
www.econ.sdu.edu.cn/images/list_box_jiaoshou_bg.jpg430.2 KiB208.3 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
/__local/E/FF/F2/C679422E6673A03E8A21FEA8A8D_A79E03AC_413...260.8 KiB199.7 KiB
div.swiper-wrapper > div.swiper-slide > a > img div.swiper-wrapper > div.swiper-slide > a > img
www.econ.sdu.edu.cn/images/9ce9f6fe8b25f13836b46b7849ee2cf0.jpg202.6 KiB174.8 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/61d200d58fa8013cf57f7fefdffdf071.png185.2 KiB155.3 KiB
a > div.kydt_txt > div.pic > img a > div.kydt_txt > div.pic > img
www.econ.sdu.edu.cn/images/zwtp_001.jpg171.1 KiB126.3 KiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/9/6B/F0/1AF9E3C44035507B76218677456_CF202D58_1A6...105.6 KiB102.1 KiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/6/22/B9/05F0E55ED8DC0DD5AA80D3AC8B5_DA08D7BC_17F...95.8 KiB93.8 KiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/0/92/70/56AB1ACE6F6EBBE4B01BACDCFBE_2EC027FF_14F...83.8 KiB82.3 KiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/9/6D/7A/E32E8E51872FFDAD26F13382D85_8961C877_138...78.1 KiB76.6 KiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/4/A4/58/46936A0E669BC1129F76E55CB61_81548B27_EFE...60.0 KiB58.6 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/zt4.jpg61.8 KiB53.8 KiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/A/6F/E4/2E44CAF8F318D74E97BA618F1C4_550318AC_D84...54.1 KiB52.6 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/zt3.jpg60.4 KiB52.0 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/ztt_jsxt.png55.8 KiB47.6 KiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/C/EE/5F/3E6F371DE113D47D4ADF8E01A57_B6EE7F3A_B6E...45.7 KiB44.5 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/jingyuanyingxiang003.png46.6 KiB38.4 KiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/F/15/E9/74A15DB439F3884A6442F965CEE_C6C831D5_995...38.3 KiB36.7 KiB
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/zt2.jpg34.9 KiB26.5 KiB
li.swiper-slide > a > div.img > img li.swiper-slide > a > div.img > img
/__local/A/D0/9E/608F5211437C14DF65D4C86DB3F_E338B458_68F...26.2 KiB24.7 KiB
li.active > div.hide > div.bigPic > img li.active > div.hide > div.bigPic > img
www.econ.sdu.edu.cn/images/jywx0330.jpg19.6 KiB9.8 KiB
div.box_table > div.box_table_cell > a > img div.box_table > div.box_table_cell > a > img
www.econ.sdu.edu.cn/images/logo2.png12.9 KiB9.3 KiB
div.w1500 > div.footer_con > div.footer_logo > img div.w1500 > div.footer_con > div.footer_logo > img
www.econ.sdu.edu.cn/images/footer_logo.png19.1 KiB7.9 KiB
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon07.png6.8 KiB5.2 KiB
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon01.png6.4 KiB4.8 KiB
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon08.png6.1 KiB4.5 KiB
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon04.png5.9 KiB4.2 KiB
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon02.png5.9 KiB4.2 KiB
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon03.png5.8 KiB4.1 KiB
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon06.png5.7 KiB4.1 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:376.77 label:Time to first byte subpart:timeToFirstByte] map[duration:25.557 label:Resource load delay subpart:resourceLoadDelay] map[duration:722.171 label:Resource load duration subpart:resourceLoadDuration] map[duration:1429.432 label:Element render delay subpart:elementRenderDelay]]
lhId: page-44-IMG
nodeLabel: div.swiper-wrapper > div.swiper-slide > a > img
path: 1,HTML,1,BODY,0,SECTION,12,SECTION,2,DIV,0,DIV,1,DIV,0,A,0,IMG
selector: div.swiper-wrapper > div.swiper-slide > a > img
snippet: <img src="images/abd60f700598ca3ae829311df3875f13.jpg" alt="">

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-44-IMG
nodeLabel: div.swiper-wrapper > div.swiper-slide > a > img
path: 1,HTML,1,BODY,0,SECTION,12,SECTION,2,DIV,0,DIV,1,DIV,0,A,0,IMG
selector: div.swiper-wrapper > div.swiper-slide > a > img
snippet: <img src="images/abd60f700598ca3ae829311df3875f13.jpg" alt="">

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.econ.sdu.edu.cn/http/1.1
www.econ.sdu.edu.cn/css/a_animate.csshttp/1.1
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www.econ.sdu.edu.cn/css/swiper.min.csshttp/1.1
www.econ.sdu.edu.cn/js/a_jquery.jshttp/1.1
www.econ.sdu.edu.cn/js/slide.jshttp/1.1
www.econ.sdu.edu.cn/_sitegray/_sitegray_d.csshttp/1.1
www.econ.sdu.edu.cn/_sitegray/_sitegray.jshttp/1.1
www.econ.sdu.edu.cn/index.vsb.csshttp/1.1
www.econ.sdu.edu.cn/system/resource/js/counter.jshttp/1.1
www.econ.sdu.edu.cn/images/logo2.pnghttp/1.1
www.econ.sdu.edu.cn/system/resource/js/base64.jshttp/1.1
www.econ.sdu.edu.cn/system/resource/js/formfunc.jshttp/1.1
www.econ.sdu.edu.cn/system/resource/js/dynclicks.jshttp/1.1
www.econ.sdu.edu.cn/images/search_btn.pnghttp/1.1
www.econ.sdu.edu.cn/system/resource/js/openlink.jshttp/1.1
www.econ.sdu.edu.cn/images/abd60f700598ca3ae829311df3875f13.jpghttp/1.1
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www.econ.sdu.edu.cn/system/resource/js/centerCutImg.jshttp/1.1
www.econ.sdu.edu.cn/system/resource/js/ajax.jshttp/1.1
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/__local/E/B8/E5/C1E74CB98D6846F2C15DD1846A9_D9AF41F6_A25...http/1.1
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/__local/E/FF/F2/C679422E6673A03E8A21FEA8A8D_A79E03AC_413...http/1.1
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www.econ.sdu.edu.cn/images/ztt_jsxt.pnghttp/1.1
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www.econ.sdu.edu.cn/images/zt3.jpghttp/1.1
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www.econ.sdu.edu.cn/system/resource/js/news/mp4video.jshttp/1.1
www.econ.sdu.edu.cn/images/ewm_icon01.pnghttp/1.1
www.econ.sdu.edu.cn/images/jywx0330.jpghttp/1.1
www.econ.sdu.edu.cn/images/22/08/16/1onvzcwhz7/jcsg_01.jpghttp/1.1
www.econ.sdu.edu.cn/images/22/08/16/1onvzcwhz7/jyxy_01.jpghttp/1.1
www.econ.sdu.edu.cn/js/a_style.jshttp/1.1
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www.econ.sdu.edu.cn/js/a_miso.jshttp/1.1
www.econ.sdu.edu.cn/js/swiper.min.jshttp/1.1
/system/resource/code/datainput.jsp?owner=1927962703&e=1&...http/1.1
www.econ.sdu.edu.cn/images/search-btn.svghttp/1.1
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www.econ.sdu.edu.cn/images/icon_01.pnghttp/1.1
www.econ.sdu.edu.cn/images/list_box_jiaoshou_bg.jpghttp/1.1
www.econ.sdu.edu.cn/images/swiper-button-prev1.pnghttp/1.1
www.econ.sdu.edu.cn/images/swiper-button-next1.pnghttp/1.1
www.econ.sdu.edu.cn/images/container04_bg.jpghttp/1.1
www.econ.sdu.edu.cn/images/icon_02.pnghttp/1.1
www.econ.sdu.edu.cn/images/container05_bg.jpghttp/1.1
www.econ.sdu.edu.cn/images/footer_bg.jpghttp/1.1
www.econ.sdu.edu.cn/images/ewm_arrow.pnghttp/1.1
www.econ.sdu.edu.cn/images/banner_li_on.pnghttp/1.1
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www.econ.sdu.edu.cn/images/jgrgs_li.pnghttp/1.1
www.econ.sdu.edu.cn/images/list_box_jiaoshou1_bg.pnghttp/1.1
www.econ.sdu.edu.cn/images/jsgd_li_on.pnghttp/1.1
www.econ.sdu.edu.cn/images/jsgd_li.pnghttp/1.1
www.econ.sdu.edu.cn/#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.

URLTransfer SizeDuration
www.econ.sdu.edu.cn/js/a_jquery.js30.7 KiB1.1 s
www.econ.sdu.edu.cn/_sitegray/_sitegray.js572 B453 ms
www.econ.sdu.edu.cn/system/resource/js/counter.js1.1 KiB453 ms
www.econ.sdu.edu.cn/js/slide.js3.7 KiB603 ms
www.econ.sdu.edu.cn/css/a_style.css26.8 KiB1.1 s
www.econ.sdu.edu.cn/index.vsb.css432 B453 ms
www.econ.sdu.edu.cn/css/swiper.min.css2.6 KiB453 ms
www.econ.sdu.edu.cn/_sitegray/_sitegray_d.css433 B453 ms
www.econ.sdu.edu.cn/css/a_animate.css6.7 KiB303 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

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

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: 150 ms 20.6 KiB
URLTransfer SizeEst Savings
www.econ.sdu.edu.cn/css/a_style.css26.4 KiB20.6 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: 0.0 ms 25.2 KiB
URLTransfer SizeEst Savings
www.econ.sdu.edu.cn/js/swiper.min.js28.6 KiB25.2 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.

CategoryTime Spent
Other3.2 s
Style & Layout603 ms
Rendering361 ms
Script Evaluation343 ms
Parse HTML & CSS91 ms
Script Parsing & Compilation89 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 3.2 KiB
URLTransfer SizeEst Savings
www.econ.sdu.edu.cn/css/a_style.css26.8 KiB3.2 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
/__local/C/3B/84/08EEB6F08A00F3F1D7B73FA1B6B_82C646DC_722...7.1 MiB
/__local/8/4C/1C/5B3C238770A31DF60ADEB58AB58_A220221C_58A...5.5 MiB
/__local/F/54/EB/381C6DC9A67E90614C83D457D08_F020FBB2_588...5.5 MiB
/__local/0/AC/7F/B300D8A3351FB9783D5333D757D_93E85EC2_2C5...2.8 MiB
www.econ.sdu.edu.cn/images/huangjilei.png2.3 MiB
www.econ.sdu.edu.cn/images/huanying2026xintongxue.png2.1 MiB
/__local/6/61/1A/CB9188E109C7DA542125CC0EA3F_4D370C10_CFD...831.8 KiB
/__local/D/3D/36/5078704EC77B5DC791CC0BF6E69_F86BAF62_CD0...820.5 KiB
/__local/B/B9/74/9483BE063D1CCF5649965B3CA7D_BEEBD8BB_B6A...731.1 KiB
/__local/E/B8/E5/C1E74CB98D6846F2C15DD1846A9_D9AF41F6_A25...649.9 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.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/WechatIMG334.jpg
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/61d200d58fa8013cf57f7fefdffdf071.png
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/61d200d58fa8013cf57f7fefdffdf071.png
div.w1500 > div.footer_con > div.footer_logo > img div.w1500 > div.footer_con > div.footer_logo > img
www.econ.sdu.edu.cn/images/footer_logo.png
li.active > div.hide > div.bigPic > img li.active > div.hide > div.bigPic > img
www.econ.sdu.edu.cn/images/jywx0330.jpg
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/zt2.jpg
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/zt3.jpg
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/jingyuanyingxiang003.png
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/ztt_jsxt.png
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/jingyuanyingxiang003.png
div.swiper-slide > a > div.pic > img div.swiper-slide > a > div.pic > img
www.econ.sdu.edu.cn/images/zt4.jpg
div.box_table > div.box_table_cell > a > img div.box_table > div.box_table_cell > a > img
www.econ.sdu.edu.cn/images/logo2.png
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon01.png
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon02.png
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon03.png
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon04.png
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon05.png
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon06.png
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon07.png
li > a > div.pic > img li > a > div.pic > img
www.econ.sdu.edu.cn/images/22/08/16/1m43p7fdp6/kslj_icon08.png

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

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Font display
●Optimize viewport for mobile
●Minify JavaScript
●JavaScript execution time 0.4 s
●Avoid long main-thread tasks 5 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 70 ms
●Server Backend Latencies 0 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 80 ms
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
○Avoid large layout shifts
39

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.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.tc_search > form#au4a > div.header-search > button.btn_blue div.tc_search > form#au4a > div.header-search > button.btn_blue

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.tc_search > form#au4a > div.header-search > input#showkeycode1061218 div.tc_search > form#au4a > div.header-search > input#showkeycode1061218

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#logo > div.box_table > div.box_table_cell > a div#logo > div.box_table > div.box_table_cell > a
div.banner_con > div.swiper-wrapper > div.swiper-slide > a div.banner_con > div.swiper-wrapper > div.swiper-slide > a
div.banner_con > div.swiper-wrapper > div.swiper-slide > a div.banner_con > div.swiper-wrapper > div.swiper-slide > a
div.banner_con > div.swiper-wrapper > div.swiper-slide > a div.banner_con > div.swiper-wrapper > div.swiper-slide > a
div.banner_con > div.swiper-wrapper > div.swiper-slide > a div.banner_con > div.swiper-wrapper > div.swiper-slide > a
div.banner_con > div.swiper-wrapper > div.swiper-slide > a div.banner_con > div.swiper-wrapper > div.swiper-slide > a
div.banner_con > div.swiper-wrapper > div.swiper-slide > a div.banner_con > div.swiper-wrapper > div.swiper-slide > a
div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a
div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a
div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a
div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a
div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a
div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a
div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a
div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a
div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > a div.rdxw_pic > div.swiper-wrapper > div.swiper-slide > 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.

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
本科生 ul > li > a > div.title
研究生 ul > li > a > div.title
学术会议 ul > li > a > div.title
双学位 ul > li > a > div.title
在职教育 ul > li > a > div.title
高端培训 ul > li > a > div.title
英美澳 ul > li > a > div.title
夏令营 ul > li > a > div.title
Academic div.w1500 > div.xsyg > div.hd_title > span.title_en
Research div.w1500 > div.jgxw > div.hd_title > span.title_en
7月31日，经济学院第五十二期金融学术讲座在中心校区逸夫信息楼类脑经济学研究中心举办。中国农业大学经济管理学院教授、博士生导师朱晨受邀主讲“从大语言模型到AI… li > a > div.jgxw_list_txt > div.des
近日，中国知网正式发布“2026年度高影响力学术辑刊”名单。山东大学经济学院主办的《产业经济评论》和经济研究院主办的《制度经济学研究》入选。中国知网“年度高影… li > a > div.jgxw_list_txt > div.des
7月23日，2026山东大学经济学科暑期系列研讨会——人工智能时代的金融风险暨经济学博士后创新论坛在中心校区知新楼B321举行。来自多伦多大学、约翰·霍普金斯… li > a > div.jgxw_list_txt > div.des
经世学堂是山东大学面向社会科学领域打造的拔尖创新人才培养平台，是学校“六堂一院”拔尖创新人才自主培养体系的重要构成。学堂秉承山东大学“为天下储人才，为国家图富… li > a > div.list_txt > div.des
根据《山东大学关于表彰2026年优秀本科毕业论文（设计）作者及指导教师的决定》（山大教字〔2026〕17号），经学院评选及推荐、学校审核、网上公示，2026年… li > a > div.list_txt > div.des
根据《山东大学推荐优秀应届本科毕业生免试攻读研究生工作办法》（山大教字[2023]7号）、《山东大学2027年推荐优秀应届本科毕业生免试攻读研究生遴选推荐工作… li > a > div.list_txt > div.des
各位老师：为进一步落实全员育人工作格局，强化班主任在学业指导、生涯规划、职业发展（“三涯”规划）、心理疏导和班级管理等方面的积极作用，紧密围绕学校和学院人才培… li > a > div.list_txt > div.des
VIEW MORE div.swiper-slide > a > div.jgrgs_txt > span.ckgd
Special Recommendation div.container06 > div.w1500 > div.hd_title > span.title_en

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
牛晓飞教授团队 li.swiper-slide > a > div.top > h5.overfloat-dot

These are opportunities to improve keyboard navigation in your application.

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.no-js html.no-js

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

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
本科生 研究生 学术会议 双学位 在职教育 高端培训 英美澳 夏令营 section.container01 > div.w1600 > div.kslj > ul

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.no-js html.no-js

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>`
●Image elements have `[alt]` attributes
●Document has a `<title>` element
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●Touch targets have sufficient size and spacing.
●All heading elements contain content.
●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 buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Links are distinguishable without relying on color.
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○No element has a `[tabindex]` value greater than 0
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○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.
96

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.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
div.swiper-wrapper > div.swiper-slide > a > img div.swiper-wrapper > div.swiper-slide > a > img
www.econ.sdu.edu.cn/images/abd60f700598ca3ae829311df3875f13.jpg412 x 196 (2.10)2560 x 1253 (2.04)
div.swiper-wrapper > div.swiper-slide > a > img div.swiper-wrapper > div.swiper-slide > a > img
www.econ.sdu.edu.cn/images/huanying2026xintongxue.png412 x 196 (2.10)2560 x 1253 (2.04)
div.swiper-wrapper > div.swiper-slide > a > img div.swiper-wrapper > div.swiper-slide > a > img
www.econ.sdu.edu.cn/images/huangjilei.png412 x 196 (2.10)2560 x 1253 (2.04)
div.swiper-wrapper > div.swiper-slide > a > img div.swiper-wrapper > div.swiper-slide > a > img
www.econ.sdu.edu.cn/images/abd60f700598ca3ae829311df3875f13.jpg412 x 196 (2.10)2560 x 1253 (2.04)
div.swiper-wrapper > div.swiper-slide > a > img div.swiper-wrapper > div.swiper-slide > a > img
www.econ.sdu.edu.cn/images/9ce9f6fe8b25f13836b46b7849ee2cf0.jpg412 x 196 (2.10)1920 x 940 (2.04)
div.swiper-wrapper > div.swiper-slide > a > img div.swiper-wrapper > div.swiper-slide > a > img
www.econ.sdu.edu.cn/images/9ce9f6fe8b25f13836b46b7849ee2cf0.jpg412 x 196 (2.10)1920 x 940 (2.04)
●Uses HTTPS
●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
●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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
91

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
○robots.txt is valid
○Document has a valid `rel=canonical`

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