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· 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.

73

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
www.virginia.edu/assets/images/homepage/01_Spring_Grounds_2331x1600.jpg0.0 ms713.0 KiB
www.virginia.edu/assets/images/homepage/03_Lawn_Aerial_Above_SS_2331x1600.jpg0.0 ms679.7 KiB
/assets/images/decour/sprite-985586fbdbcf2ddaa034fd951fb4...0.0 ms674.3 KiB
www.virginia.edu/assets/images/homepage/poster-image.jpg0.0 ms569.5 KiB
/assets/images/homepage/07_NGWSD_Cavman-in-the-spotlight-...0.0 ms429.2 KiB
www.virginia.edu/assets/images/homepage/05_No_Tech_Classroom_LNG_2331x1600.jpg0.0 ms406.8 KiB
www.virginia.edu/assets/images/homepage/Radio-telescope-on-tractor_1600x1200.jpg0.0 ms394.1 KiB
www.virginia.edu/assets/images/homepage/Home_is_Where_The_Hoos_Are_600x1067.jpg0.0 ms313.3 KiB
www.virginia.edu/assets/images/homepage/06_Psychology_J-Term_MR_2331x1600.jpg0.0 ms225.3 KiB
www.virginia.edu/assets/images/homepage/02_Fire-Twirler-Smiling_MR_2331x1600.jpg0.0 ms218.8 KiB
www.virginia.edu/assets/images/homepage/HP_Monticello_600x1067.jpg0.0 ms216.2 KiB
www.virginia.edu/assets/images/homepage/HP_This_Is_Virginia_600x1067.jpg0.0 ms210.2 KiB
/assets/images/homepage/04_Spring_FDOC_2026_Students-smil...0.0 ms207.6 KiB
www.virginia.edu/assets/images/homepage/lgDR-Founders.jpg0.0 ms98.4 KiB
/assets/images/homepage/HP-Homepage-A-student-sings-the-G...0.0 ms96.6 KiB
www.virginia.edu/assets/images/homepage/lgDR-Rousell.jpg0.0 ms81.4 KiB
customer.cludo.com/scripts/bundles/search-script.min.js0.0 ms51.1 KiB
www.virginia.edu/assets/css/styles.css?10.0 ms22.8 KiB
www.virginia.edu/assets/images/logo-horizontal-ko.png0.0 ms20.1 KiB
www.virginia.edu/assets/images/logo-primary-blue.png0.0 ms9.8 KiB
www.virginia.edu/assets/images/logo-primary-ko.png0.0 ms9.0 KiB
tags.srv.stackadapt.com/events.js5.0 s7.7 KiB
use.typekit.net/tgy5tlj.js?1600.0 s7.7 KiB
www.virginia.edu/assets/images/decour/corner-top-left-white.png0.0 ms5.5 KiB
www.virginia.edu/assets/images/decour/HP-DECOR-Filigree-Weave-Pattern.svg0.0 ms3.8 KiB
www.virginia.edu/assets/images/decour/corner-bottom-right-white.png0.0 ms2.9 KiB
customer.cludo.com/assets/10000068/10000076/cludo-search.min.css0.0 ms2.7 KiB
script.crazyegg.com/pages/scripts/0090/5137.js300.0 s2.7 KiB
www.virginia.edu/assets/js/vertical-youtube-block-v2.js0.0 ms2.6 KiB
www.virginia.edu/assets/js/search_functions_v2.js?10.0 ms2.5 KiB
www.virginia.edu/assets/js/getting-started-links-v2.js0.0 ms2.3 KiB
www.virginia.edu/assets/js/rave_alert.js?10.0 ms2.0 KiB
www.virginia.edu/assets/images/decour/HP-DECOR-Filigree-Oculus.svg0.0 ms1.7 KiB
www.virginia.edu/assets/js/slideshow.js0.0 ms1.6 KiB
www.virginia.edu/assets/css/rss-reader.css0.0 ms1.5 KiB
www.virginia.edu/assets/js/mobile-submenu-toggle.js0.0 ms1.1 KiB
www.virginia.edu/assets/js/fbp.js?10.0 ms1.0 KiB
www.virginia.edu/assets/js/calendar-feed.js0.0 ms1.0 KiB
www.virginia.edu/assets/css/fbp.css0.0 ms850 B
www.virginia.edu/assets/images/decour/white_arrow_down.png0.0 ms533 B
www.virginia.edu/assets/images/decour/HP-DECOR-Curved-Arrow-Right-orange.svg0.0 ms497 B
www.virginia.edu/assets/images/decour/HP-DECOR-Curved-Arrow-Right-white.svg0.0 ms495 B
www.virginia.edu/assets/images/decour/HP-DECOR-Curved-Arrow-Right-Corner.svg0.0 ms493 B
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.css604800.0 s4.8 KiB
/assets/images/decour/HP-DECOR-Curved-Arrow-Circle-Left-A...0.0 ms485 B
www.virginia.edu/assets/images/decour/HP-DECOR-Curved-Lines.svg0.0 ms454 B
/assets/images/decour/HP-DECOR-Curved-Arrow-Circle-Right-...0.0 ms449 B
www.virginia.edu/assets/images/decour/HP-DECOR-Bottom-Right-Corner.svg0.0 ms413 B
www.virginia.edu/assets/images/decour/HP-DECOR-Curved-Arrow-Right.svg0.0 ms407 B
www.virginia.edu/assets/images/decour/corner-top-left-orange.svg0.0 ms394 B
/p.gif?s=1&k=tgy5tlj&ht=tk&h=www.virginia.edu&f=8482.8484...604800.0 s205 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
/af/755bca/000000000000000077359eb1/30/l?primer=81a69539b...105 ms
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/webfonts/fa-solid-900.woff280 ms
/af/07d425/0000000000000000000118ae/27/l?primer=7cdcb44be...80 ms
/af/68efc1/000000000000000000012d69/27/l?primer=388f68b35...75 ms
/af/a5188d/0000000000000000000118b0/27/l?primer=7cdcb44be...75 ms
/af/2d0302/0000000000000000000118b6/27/l?primer=7cdcb44be...75 ms
/af/e5e7a7/0000000000000000000118be/27/l?primer=7cdcb44be...70 ms
/af/4dc82a/000000000000000077359e9b/30/l?primer=81a69539b...65 ms
/af/cb5984/000000000000000077359eab/30/l?primer=81a69539b...65 ms
/af/7bc359/0000000000000000000118bd/27/l?primer=7cdcb44be...65 ms
/af/01ad8b/0000000000000000000118bc/27/l?primer=7cdcb44be...65 ms
/af/ed9e57/000000000000000000012d65/27/l?primer=388f68b35...60 ms
/af/5b1404/0000000000000000000118b4/27/l?primer=7cdcb44be...60 ms
/af/9a7284/0000000000000000000118b2/27/l?primer=7cdcb44be...50 ms
/af/f36f8c/000000000000000077359eb0/30/l?primer=81a69539b...50 ms
/af/ce6b1d/0000000000000000000118ba/27/l?primer=7cdcb44be...50 ms
/af/63b6fe/0000000000000000000118bb/27/l?primer=7cdcb44be...50 ms
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/webfonts/fa-regular-400.woff250 ms
/af/8d9b32/0000000000000000000118bf/27/l?primer=7cdcb44be...40 ms
/af/2e6f07/000000000000000000011ce6/27/l?primer=7cdcb44be...35 ms
/af/4d7df9/000000000000000077359ea3/30/l?primer=81a69539b...35 ms
/af/3cbd9b/000000000000000000012d68/27/l?primer=388f68b35...25 ms
/af/d7062a/000000000000000000012d66/27/l?primer=388f68b35...20 ms
/af/0de2a8/0000000000000000000118c0/27/l?primer=7cdcb44be...20 ms
/af/9cb78a/0000000000000000000118ad/27/l?primer=7cdcb44be...15 ms
/af/a2031c/0000000000000000000118b9/27/l?primer=7cdcb44be...15 ms
/af/82db8a/000000000000000077359dfa/30/l?primer=7cdcb44be...10 ms
/af/c7b613/0000000000000000000118b3/27/l?primer=7cdcb44be...10 ms
/af/b825af/0000000000000000000118b1/27/l?primer=7cdcb44be...10 ms

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-0-VIDEO
nodeLabel: body.home > section.hp-hero > video#hp-hero-video
path: 1,HTML,1,BODY,8,SECTION,1,VIDEO
selector: body.home > section.hp-hero > video#hp-hero-video
snippet: <video id="hp-hero-video" muted="" playsinline="" tabindex="-1" aria-hidden="true" poster="/assets/images/homepage/poster-image.jpg">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
www.virginia.edu/assets/js/search_functions_v2.js?12.5 KiB
www.virginia.edu/assets/css/styles.css?122.8 KiB202 ms
www.virginia.edu/assets/js/fbp.js?11.0 KiB
www.virginia.edu/assets/js/calendar-feed.js1.0 KiB
www.virginia.edu/assets/js/rave_alert.js?12.0 KiB
www.virginia.edu/assets/css/fbp.css850 B
www.virginia.edu/assets/css/rss-reader.css1.5 KiB202 ms
ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js30.4 KiB327 ms
customer.cludo.com/assets/10000068/10000076/cludo-search.min.css2.7 KiB251 ms
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/css/all.min.css19.1 KiB326 ms
use.typekit.net/tgy5tlj.js?17.7 KiB252 ms
cdn.jsdelivr.net/npm/slick-carousel@1.8.1/slick/slick.min.js10.8 KiB81 ms
cdn.jsdelivr.net/npm/slick-carousel@1.8.1/slick/slick-theme.css987 B
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.css4.8 KiB
cdn.jsdelivr.net/npm/slick-carousel@1.8.1/slick/slick.css998 B202 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
Side-angle view of the Rotunda, framed by blooming trees. div.slick-list > div.slick-track > div#slick-slide00 > img
www.virginia.edu/assets/images/homepage/01_Spring_Grounds_2331x1600.jpg712.1 KiB508.4 KiB
Aerial view of a university campus with quad and autumn trees. div.slick-list > div.slick-track > div#slick-slide02 > img
www.virginia.edu/assets/images/homepage/03_Lawn_Aerial_Above_SS_2331x1600.jpg678.9 KiB475.2 KiB
body.home > section.hp-hero > img#hp-hero-poster body.home > section.hp-hero > img#hp-hero-poster
www.virginia.edu/assets/images/homepage/poster-image.jpg568.7 KiB338.0 KiB
Construction lift holding a satellite dish against a star-filled night sky. div.research-large > a > div.research-large-image > img
www.virginia.edu/assets/images/homepage/Radio-telescope-on-tractor_1600x1200.jpg393.5 KiB290.1 KiB
UVA Cavman flexes on a basketball court in front of a crowd. div.slick-list > div.slick-track > div#slick-slide06 > img
/assets/images/homepage/07_NGWSD_Cavman-in-the-spotlight-...428.6 KiB284.8 KiB
Two UVA students smiling and laughing in front of a brick building div.vertical-video-item > div.vertical-video-card > button.vertical-poster-container > img.poster
www.virginia.edu/assets/images/homepage/Home_is_Where_The_Hoos_Are_600x1067.jpg312.8 KiB283.6 KiB
Professor lecturing to students in a large auditorium. div.slick-list > div.slick-track > div#slick-slide04 > img
www.virginia.edu/assets/images/homepage/05_No_Tech_Classroom_LNG_2331x1600.jpg406.2 KiB270.0 KiB
Front view of Monticello, Jefferson’s historic home, with red bricks, white col… div.vertical-video-item > div.vertical-video-card > button.vertical-poster-container > img.poster
www.virginia.edu/assets/images/homepage/HP_Monticello_600x1067.jpg215.8 KiB186.6 KiB
Aerial night view of a stadium with people in orange forming 'UVA' and firework… div.vertical-video-item > div.vertical-video-card > button.vertical-poster-container > img.poster
www.virginia.edu/assets/images/homepage/HP_This_Is_Virginia_600x1067.jpg209.8 KiB180.6 KiB
Three people in lab coats and gloves examine a specimen together on a metal tra… div.slick-list > div.slick-track > div#slick-slide05 > img
www.virginia.edu/assets/images/homepage/06_Psychology_J-Term_MR_2331x1600.jpg224.9 KiB149.5 KiB
Smiling fire performer holding flaming torches. div.slick-list > div.slick-track > div#slick-slide01 > img
www.virginia.edu/assets/images/homepage/02_Fire-Twirler-Smiling_MR_2331x1600.jpg218.4 KiB145.2 KiB
Two person hugging each other. div.slick-list > div.slick-track > div#slick-slide03 > img
/assets/images/homepage/04_Spring_FDOC_2026_Students-smil...207.2 KiB137.7 KiB
Chief Justice John G. Roberts Jr., architect Jeanne Gang and scholar and author… div.col2 > div.rss-item > div.hp-ne-topic-row-image > img
www.virginia.edu/assets/images/homepage/lgDR-Founders.jpg98.2 KiB83.4 KiB
A student sings the Good Old Song into a microphone on Grounds div.vertical-video-item > div.vertical-video-card > button.vertical-poster-container > img.poster
/assets/images/homepage/HP-Homepage-A-student-sings-the-G...96.3 KiB69.4 KiB
UVA women’s basketball coach Aaron Roussell walks hand-in-hand with his daughte… div.col2 > div.rss-item > div.hp-ne-topic-row-image > img
www.virginia.edu/assets/images/homepage/lgDR-Rousell.jpg81.2 KiB68.9 KiB
The University of Virginia div.footer-content > div.footer-logo > a > img
www.virginia.edu/assets/images/logo-primary-ko.png8.8 KiB7.1 KiB
The University of Virginia header > div#horizontal-logo > a > img
www.virginia.edu/assets/images/logo-horizontal-ko.png20.0 KiB5.2 KiB

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

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 2.6 KiB
URLTransfer SizeEst Savings
www.virginia.edu/assets/css/styles.css?122.8 KiB2.6 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: 90 ms 33.0 KiB
URLTransfer SizeEst Savings
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/css/all.min.css18.4 KiB18.2 KiB
www.virginia.edu/assets/css/styles.css?122.6 KiB14.7 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 130 ms 169.3 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-J44315NZPS&cx=c&gtm=4e64h1170.3 KiB68.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-58VK8DX150.1 KiB47.9 KiB
/pages/versioned/common-scripts/4ce8c7df8d425cc5046457682...55.1 KiB27.4 KiB
customer.cludo.com/scripts/bundles/search-script.min.js48.9 KiB25.7 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
/v3-1/playback/aea2802b-e494-4d2a-8b98-824b56fc1503/836a7...4.5 MiB
www.virginia.edu/assets/images/homepage/01_Spring_Grounds_2331x1600.jpg713.0 KiB
www.virginia.edu/assets/images/homepage/03_Lawn_Aerial_Above_SS_2331x1600.jpg679.7 KiB
/assets/images/decour/sprite-985586fbdbcf2ddaa034fd951fb4...674.3 KiB
www.virginia.edu/assets/images/homepage/poster-image.jpg569.5 KiB
/assets/images/homepage/07_NGWSD_Cavman-in-the-spotlight-...429.2 KiB
www.virginia.edu/assets/images/homepage/05_No_Tech_Classroom_LNG_2331x1600.jpg406.8 KiB
www.virginia.edu/assets/images/homepage/Radio-telescope-on-tractor_1600x1200.jpg394.1 KiB
www.virginia.edu/assets/images/homepage/Home_is_Where_The_Hoos_Are_600x1067.jpg313.3 KiB
www.virginia.edu/assets/images/homepage/06_Psychology_J-Term_MR_2331x1600.jpg225.3 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
Side-angle view of the Rotunda, framed by blooming trees. div.slick-list > div.slick-track > div#slick-slide00 > img
www.virginia.edu/assets/images/homepage/01_Spring_Grounds_2331x1600.jpg
Smiling fire performer holding flaming torches. div.slick-list > div.slick-track > div#slick-slide01 > img
www.virginia.edu/assets/images/homepage/02_Fire-Twirler-Smiling_MR_2331x1600.jpg
Aerial view of a university campus with quad and autumn trees. div.slick-list > div.slick-track > div#slick-slide02 > img
www.virginia.edu/assets/images/homepage/03_Lawn_Aerial_Above_SS_2331x1600.jpg
Two person hugging each other. div.slick-list > div.slick-track > div#slick-slide03 > img
/assets/images/homepage/04_Spring_FDOC_2026_Students-smil...
Professor lecturing to students in a large auditorium. div.slick-list > div.slick-track > div#slick-slide04 > img
www.virginia.edu/assets/images/homepage/05_No_Tech_Classroom_LNG_2331x1600.jpg
Three people in lab coats and gloves examine a specimen together on a metal tra… div.slick-list > div.slick-track > div#slick-slide05 > img
www.virginia.edu/assets/images/homepage/06_Psychology_J-Term_MR_2331x1600.jpg
UVA Cavman flexes on a basketball court in front of a crowd. div.slick-list > div.slick-track > div#slick-slide06 > img
/assets/images/homepage/07_NGWSD_Cavman-in-the-spotlight-...
Chief Justice John G. Roberts Jr., architect Jeanne Gang and scholar and author… div.col2 > div.rss-item > div.hp-ne-topic-row-image > img
www.virginia.edu/assets/images/homepage/lgDR-Founders.jpg
UVA women’s basketball coach Aaron Roussell walks hand-in-hand with his daughte… div.col2 > div.rss-item > div.hp-ne-topic-row-image > img
www.virginia.edu/assets/images/homepage/lgDR-Rousell.jpg
body.home > section.stats-simple > div.decour-curves > img body.home > section.stats-simple > div.decour-curves > img
www.virginia.edu/assets/images/decour/HP-DECOR-Curved-Lines.svg
body.home > section.stats-simple > div.decour-oculus > img body.home > section.stats-simple > div.decour-oculus > img
www.virginia.edu/assets/images/decour/HP-DECOR-Filigree-Oculus.svg
The University of Virginia header > div#horizontal-logo > a > img
www.virginia.edu/assets/images/logo-horizontal-ko.png
The University of Virginia div.footer-content > div.footer-logo > a > img
www.virginia.edu/assets/images/logo-primary-ko.png

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

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 50 ms
●Minify JavaScript
●User Timing marks and measures 9 user timings
●JavaScript execution time 0.3 s
●Minimizes main-thread work 0.8 s
●Avoid long main-thread tasks 1 long task found
●Avoid non-composited animations 1 animated element found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 160 ms
●Server Backend Latencies 180 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 330 ms
●Avoid large layout shifts 15 layout shifts found
○INP breakdown
99

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

Including a skip link can help users skip to the main content to save time. Learn more about skip links.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Skip to main content body.home > a.skip-link

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.

○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
●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
●`[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.
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●ARIA input fields have accessible names
●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.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●ARIA IDs are unique
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○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.
○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.
○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 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
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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