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Lighthouse Desktop

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

Audit breakdown by category with detailed findings.

67

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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:31.815 source:map[type:text value:[unattributed]]] map[reflowTime:39.767 source:map[column:49 line:88 type:source-location url:https://www.uu.se/download/18.579c19d717c11707086bbab/1757996082667/same-heights-for-puffs.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
Kollage div > div.card > div.uu-blurb__image > img.sv-noborder
www.uu.se/images/200.7e3af2b419d957c6c896ef/1776335226472/Kollage%20vinnare.png299.0 KiB285.8 KiB
div > div.trio-block > div.block > img.sv-noborder div > div.trio-block > div.block > img.sv-noborder
www.uu.se/images/200.5ed846fa19bbd0570e613404/1768819131235/carta.jpg161.5 KiB140.9 KiB
div > div.trio-block > div.block > img.sv-noborder div > div.trio-block > div.block > img.sv-noborder
www.uu.se/images/200.476ea89c199c8f285c63b18d/1761132059532/forskarpodden.jpg55.5 KiB38.1 KiB
Rektor Anders Hagfeldt div > div.trio-block > div.block > img.sv-noborder
www.uu.se/images/200.476ea89c199c8f285c63b18c/1761132059119/rektor-600px.jpg55.5 KiB36.0 KiB
Tre forskare står i labbet. I förgrunden syns blåa lådor med labbutrustning. div > div.card > div.uu-blurb__image > img.sv-noborder
/images/200.2d3eafd619d9a58abd4104a4/1776675805791/Tobias...36.1 KiB22.8 KiB
div > div.card > div.uu-blurb__image > img.sv-noborder div > div.card > div.uu-blurb__image > img.sv-noborder
/images/200.158edd0a19d952644265916/1776410920609/Juridik...34.4 KiB21.2 KiB
div > div.trio-block > div.block > img.sv-noborder div > div.trio-block > div.block > img.sv-noborder
www.uu.se/images/200.5ed846fa19bbd0570e613437/1768819427055/blixt.jpg32.3 KiB20.9 KiB
Micheline med en cykel utanför Ekonomikum div > div.card > div.uu-blurb__image > img.sv-noborder
/images/200.48ed1d8d19d9a73eb7c1655b/1776756515682/Michel...34.1 KiB20.9 KiB
div > div.card > div.uu-blurb__image > img.sv-noborder div > div.card > div.uu-blurb__image > img.sv-noborder
/images/200.48ed1d8d19d9a73eb7c17538/1776768533575/1932DS...20.0 KiB6.8 KiB
Anna står och undervisar div > div.card > div.uu-blurb__image > img.sv-noborder
/images/200.48ed1d8d19d9a73eb7c11379/1776687356156/Anna-S...18.8 KiB5.5 KiB

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-10-DIV
nodeLabel: div#svid94_49dda2ce187eb0652cd1b9f9 > div#svid12_68fc848719c987530ff2797c > section.section-superhero > div.jumbotron
path: 1,HTML,1,BODY,1,DIV,2,DIV,1,DIV,4,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,1,SECTION,0,DIV
selector: div#svid94_49dda2ce187eb0652cd1b9f9 > div#svid12_68fc848719c987530ff2797c > section.section-superhero > div.jumbotron
snippet: <div class="jumbotron jumbotron-image jumbotron-image-fullheight jumbotron-fluid jumbo…" style="--image: url(/images/18.68fc848719c987530ff27277/1772800554583/Konflikter%…;">

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.uu.se/http/1.1
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www.uu.se/2.4c73ddc2178d03ec3374a31/auto/1776810575417/SiteVision.csshttp/1.1
www.uu.se/2.4c73ddc2178d03ec3374a31/0/7514/print/SiteVision.csshttp/1.1
/sitevision/system-resource/a1232478c4e76e6681fd837fb1144...http/1.1
/sitevision/system-resource/a1232478c4e76e6681fd837fb1144...http/1.1
/webapp-resource/2.4c73ddc2178d03ec3374a31/360.1189cee219...http/1.1
/webapp-resource/2.4c73ddc2178d03ec3374a31/360.36e9688b19...http/1.1
/webapp-resource/2.4c73ddc2178d03ec3374a31/360.6d53d97119...http/1.1
/webapp-resource/2.4c73ddc2178d03ec3374a31/360.25aee61f19...http/1.1
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/webapp-resource/2.4c73ddc2178d03ec3374a31/360.158edd0a19...http/1.1
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/webapp-resource/2.4c73ddc2178d03ec3374a31/360.1d4843af19...http/1.1
/webapp-resource/2.4c73ddc2178d03ec3374a31/360.7e3af2b419...http/1.1
/webapp-resource/2.4c73ddc2178d03ec3374a31/360.5c92f2ac19...http/1.1
/webapp-resource/2.4c73ddc2178d03ec3374a31/360.96436fe19d...http/1.1
/webapp-resource/2.4c73ddc2178d03ec3374a31/360.4e1949f619...http/1.1
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/webapp-resource/2.4c73ddc2178d03ec3374a31/360.7e3af2b419...http/1.1
/sitevision/system-resource/a1232478c4e76e6681fd837fb1144...http/1.1
/sitevision/system-resource/a1232478c4e76e6681fd837fb1144...http/1.1
/sitevision/system-resource/a1232478c4e76e6681fd837fb1144...http/1.1
/sitevision/system-resource/a1232478c4e76e6681fd837fb1144...http/1.1
www.uu.se/download/18.22a992521791cc74e741f168/1757302464152/uu-system-style.csshttp/1.1
www.uu.se/download/18.1689721317ce9d323432129a/1776758844299/01-base.csshttp/1.1
www.uu.se/download/18.1691c9e917ce9a8cab921510/1765361483413/02-layout.csshttp/1.1
www.uu.se/download/18.4a50af2e186a1aefd8e14f91/1723454488093/03-module-alert.csshttp/1.1
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www.uu.se/download/18.55c61a5b18529b23d1194888/1774850524198/03-module-form.csshttp/1.1
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www.uu.se/download/18.1689721317ce9d32343212fb/1776758902655/03-module-image.csshttp/1.1
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www.uu.se/download/18.1689721317ce9d32343212fc/1759898026288/03-module-link.csshttp/1.1
/download/18.5cc1c33d18bfaf91fa92f21/1759121652373/03-mod...http/1.1
www.uu.se/download/18.1691c9e917ce9a8cab92154a/1709541952934/03-module-list.csshttp/1.1
www.uu.se/download/18.5d01221f18002aa97581fd23/1750746371694/03-module-map.csshttp/1.1
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www.uu.se/download/18.42c59fdc18bcc3ce72acca3/1753967515068/03-module-modal.csshttp/1.1
www.uu.se/download/18.5afc0f1118c80b470232bd3/1707908507719/03-module-news.csshttp/1.1
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www.uu.se/download/18.4c289be1182e94c01a1182fb/1701333991220/03-module-puff.csshttp/1.1
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www.uu.se/download/18.2502a32b1800299972420f95/1651144604330/03-module-tag.csshttp/1.1
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www.uu.se/download/18.1fdc1e7a17ce9bd843d1ef81/1759997377588/04-state.csshttp/1.1
www.uu.se/download/18.34abf85c17f44b619a8672c/1749447247993/05-edit.csshttp/1.1
www.uu.se/download/18.49dda2ce187eb0652cd1b15a/1776413928120/05-theme.csshttp/1.1
/TSPD/08b91fea32ab200044fd731f716a9791e2c54e684c7431a59d2...http/1.1
/webapp-files/se.uu.uit.webb.InternetExplorerWarning/1.0....http/1.1
www.uu.se/images/18.17dda5f1791cdbd287d9b55/1622452923523/uu-logo-red.svghttp/1.1
/webapp-files/se.uu.uit.webb.webapp-demo-debug-banner/1.2...http/1.1
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/images/200.5ed846fa19bbd0570e613359/1768818342973/TemaEx...http/1.1
www.uu.se/images/200.5ed846fa19bbd0570e613404/1768819131235/carta.jpghttp/1.1
www.uu.se/images/200.5ed846fa19bbd0570e613437/1768819427055/blixt.jpghttp/1.1
www.uu.se/images/200.476ea89c199c8f285c63b18c/1761132059119/rektor-600px.jpghttp/1.1
www.uu.se/images/200.476ea89c199c8f285c63b18d/1761132059532/forskarpodden.jpghttp/1.1
/webapp-files/se.uu.uit.webb.webapp-event-filter/1.76.0/c...http/1.1
/webapp-files/se.uu.uit.webb.webapp-personalisation-provi...http/1.1
/webapp-files/se.uu.uit.webb.webapp-list-related-informat...http/1.1
/webapp-files/se.uu.uit.webb.webapp-list-related-informat...http/1.1
/webapp-files/se.uu.uit.webb.webapp-list-related-informat...http/1.1
www.uu.se/images/18.568cd288179fad3f3ec3b54/1624518935591/logo-facebook.svghttp/1.1
www.uu.se/images/18.568cd288179fad3f3ec3b51/1624518935561/logo-instagram.svghttp/1.1
www.uu.se/images/18.568cd288179fad3f3ec3b53/1624518935581/logo-youtube.svghttp/1.1
www.uu.se/images/18.568cd288179fad3f3ec3b52/1624518935571/logo-linkedin.svghttp/1.1
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/download/18.579c19d717c11707086bbab/1757996082667/same-h...http/1.1
www.uu.se/download/18.1689721317ce9d323431335a/1757996074169/fix-archive-list.jshttp/1.1
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/sitevision/system-resource/a1232478c4e76e6681fd837fb1144...http/1.1
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/images/200.158edd0a19d952644265916/1776410920609/Juridik...http/1.1
www.uu.se/images/200.7e3af2b419d957c6c896ef/1776335226472/Kollage%20vinnare.pnghttp/1.1
/images/200.96436fe19d72243ba071a/1775742907793/Uppsträc...http/1.1
www.uu.se/images/200.96436fe19d72243ba0746/1775743039045/studentliv.webphttp/1.1
www.uu.se/images/200.96436fe19d72243ba0758/1775743141838/antagen.webphttp/1.1
www.uu.se/images/18.214c4f7a19513c1d6c2c08f/1739953298338/gray+alpha_sigill.svghttp/1.1
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/appresource/2.4c73ddc2178d03ec3374a31/12.6c59f87e18d8738...http/1.1
www.uu.se/images/18.8f4a58d179fad1fc83e86/1623955821798/favicon-16x16.pnghttp/1.1

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
/TSPD/08b91fea32ab200044fd731f716a9791e2c54e684c7431a59d2...18.7 KiB315 ms
www.uu.se/download/18.49dda2ce187eb0652cd1b15a/1776413928120/05-theme.css1.0 KiB245 ms
www.uu.se/download/18.34abf85c17f44b619a8672c/1749447247993/05-edit.css992 B245 ms
www.uu.se/download/18.1fdc1e7a17ce9bd843d1ef81/1759997377588/04-state.css2.2 KiB245 ms
/download/18.24b782ce196d7bafa7e173ee/1754565550612/03-mo...2.3 KiB245 ms
/download/18.26da866f188bdc5637ad39ea/1690786817904/03-mo...1005 B245 ms
/download/18.4d7954aa186a19b9b5a4819b/1678950105115/03-mo...939 B245 ms
www.uu.se/download/18.2502a32b1800299972420f95/1651144604330/03-module-tag.css1.2 KiB245 ms
/download/18.2f4c215919936f92def20682/1758175734099/03-mo...1.2 KiB245 ms
/download/18.78e635ab18c8aba21d33bb13/1774850536990/03-mo...3.6 KiB245 ms
/download/18.1d52609317ce99039f721400/1762933248672/03-mo...6.7 KiB245 ms
/download/18.59b846bf18bcc057d9ae808/1706170235737/03-mod...1.7 KiB245 ms
/download/18.1d52609317ce99039f7213ff/1769415059505/03-mo...1.8 KiB245 ms
/download/18.5541e6ed18d87632e9b494db/1709024310236/03-mo...897 B245 ms
www.uu.se/download/18.4c289be1182e94c01a1182fb/1701333991220/03-module-puff.css1.5 KiB245 ms
/download/18.3918674c18418b421002d537/1753968085003/03-mo...1.7 KiB245 ms
/download/18.1689721317ce9d323432f822/1701784619580/03-mo...3.2 KiB245 ms
/download/18.42c59fdc18bcc3ce72ac585/1724397985448/03-mod...3.0 KiB245 ms
/download/18.3b1231b7185299ce80c9b68f/1675236271972/03-mo...969 B245 ms
www.uu.se/download/18.5afc0f1118c80b470232bd3/1707908507719/03-module-news.css1.1 KiB245 ms
www.uu.se/download/18.42c59fdc18bcc3ce72acca3/1753967515068/03-module-modal.css2.9 KiB245 ms
/download/18.2ce255dc18a2623ec1f97f/1692867249979/03-modu...938 B245 ms
www.uu.se/download/18.1691c9e917ce9a8cab92154a/1709541952934/03-module-list.css1.2 KiB245 ms
/download/18.5cc1c33d18bfaf91fa92f21/1759121652373/03-mod...1.2 KiB245 ms
www.uu.se/download/18.5d01221f18002aa97581fd23/1750746371694/03-module-map.css1.2 KiB245 ms
www.uu.se/download/18.1689721317ce9d32343212fc/1759898026288/03-module-link.css2.4 KiB245 ms
/download/18.1d52609317ce99039f7213fe/1754398810248/03-mo...1.8 KiB245 ms
/download/18.55177f18191973381ba5ab08/1753968239581/03-mo...1.7 KiB245 ms
/download/18.3ecb593518bfb2bde8cd1f/1747292347760/03-modu...4.0 KiB245 ms
www.uu.se/download/18.1689721317ce9d32343212fb/1776758902655/03-module-image.css1.1 KiB245 ms
/download/18.94df54c18d54d725e91344c/1707074562791/03-mod...1.1 KiB245 ms
www.uu.se/download/18.55c61a5b18529b23d1194888/1774850524198/03-module-form.css3.5 KiB245 ms
/download/18.5738ec5b19b355d104d15d2/1766150139991/03-mod...1.3 KiB245 ms
/download/18.30f49183187eaded81b1c813/1701241013842/03-mo...958 B245 ms
/download/18.4d1039ae18779706a0d3882f/1761548490295/03-mo...4.8 KiB245 ms
/download/18.2ffdaa711817ff110acd0f24/1776329606459/03-mo...1.1 KiB245 ms
/download/18.74423c3a18a92ebfb6051a09/1723469748521/03-mo...1.4 KiB245 ms
/download/18.724082a918a25ff33a216846/1693211573294/03-mo...932 B245 ms
/download/18.1691c9e917ce9a8cab921515/1761548467248/03-mo...2.7 KiB245 ms
/download/18.63be373d18002ba6e7ecb83/1649939468891/03-mod...982 B245 ms
/download/18.70c811ab18ecb60cae9310ab/1760416160967/03-mo...7.1 KiB245 ms
/download/18.578a5ce118125d0fecb6daa/1655274655976/03-mod...1.8 KiB245 ms
/download/18.1fdc1e7a17ce9bd843d2146a/1753967376224/03-mo...2.0 KiB245 ms
www.uu.se/download/18.22a992521791cc74e741f168/1757302464152/uu-system-style.css71.3 KiB803 ms
/download/18.4d7954aa186a19b9b5a26486/1678370983912/03-mo...1.6 KiB245 ms
/download/18.1fdc1e7a17ce9bd843d21467/1761548413279/03-mo...1.3 KiB245 ms
/download/18.1691c9e917ce9a8cab921512/1750748037011/03-mo...2.3 KiB245 ms
/download/18.1fdc1e7a17ce9bd843d21409/1766150133962/03-mo...2.0 KiB245 ms
www.uu.se/download/18.4a50af2e186a1aefd8e14f91/1723454488093/03-module-alert.css1.7 KiB245 ms
www.uu.se/download/18.1691c9e917ce9a8cab921510/1765361483413/02-layout.css2.1 KiB245 ms
www.uu.se/download/18.1689721317ce9d323432129a/1776758844299/01-base.css2.4 KiB245 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
siteimproveanalytics.com/js/siteanalyze_8074.js86400.0 s93.6 KiB
static.rekai.se/56acd5b3.js300.0 s24.6 KiB

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 307 ms
URLTime Spent
uu.se/307 ms
www.uu.se/0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

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: 40 ms 15.7 KiB
URLTransfer SizeEst Savings
www.uu.se/download/18.22a992521791cc74e741f168/1757302464152/uu-system-style.css71.3 KiB11.4 KiB
/download/18.70c811ab18ecb60cae9310ab/1760416160967/03-mo...7.1 KiB2.3 KiB
/download/18.4d1039ae18779706a0d3882f/1761548490295/03-mo...4.8 KiB2.0 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: 300 ms 315.5 KiB
URLTransfer SizeEst Savings
www.uu.se/2.4c73ddc2178d03ec3374a31/auto/1776810575417/SiteVision.css228.8 KiB228.7 KiB
www.uu.se/download/18.22a992521791cc74e741f168/1757302464152/uu-system-style.css70.7 KiB66.7 KiB
/sitevision/system-resource/a1232478c4e76e6681fd837fb1144...22.8 KiB20.1 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 10 ms 155.2 KiB
URLTransfer SizeEst Savings
siteimproveanalytics.com/js/siteanalyze_8074.js92.9 KiB73.3 KiB
/webapp-files/se.uu.uit.webb.webapp-event-filter/1.76.0/c...58.0 KiB34.7 KiB
/sitevision/system-resource/a1232478c4e76e6681fd837fb1144...38.4 KiB26.8 KiB
/webapp-files/se.uu.uit.webb.webapp-warnings/1.0.0/client...36.4 KiB20.3 KiB

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

●Layout shift culprits
●Optimize DOM size
●Font display
●LCP breakdown
●Optimize viewport for mobile
●Max Potential First Input Delay 30 ms
●Minify JavaScript
●Avoids enormous network payloads Total size was 2,462 KiB
●JavaScript execution time 0.1 s
●Minimizes main-thread work 0.9 s
●Image elements have explicit `width` and `height`
●Network Requests
●Network Round Trip Times 50 ms
●Server Backend Latencies 140 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 80 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
○User Timing marks and measures
○Avoid long main-thread tasks
○Avoid non-composited animations
100

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.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Links have a discernible name
●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.
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○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.
○`<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.
○Identical links have the same purpose.
○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.
100

Best Practices

●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
●Displays images with correct aspect ratio
●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
100

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.

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

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