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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.

57

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
/assets/client/dist/js/shared.bundle.min.js?v=2o4lyh3fhHc...3600.0 s3.4 MiB
/globalassets/aaos-home/images/cta-images/access_featured...0.0 ms1.1 MiB
www.aaos.org/globalassets/aaos-home/images/hero-images/am27_hero_cfa_april-1.gif0.0 ms785.3 KiB
/assets/client/dist/css/shared.css?v=DyNp7GP9lbgkjaVPGpFK...3600.0 s502.8 KiB
/assets/client/dist/css/shared.min.css?v=umYL0barViuBUNcy...3600.0 s405.6 KiB
/globalassets/aaos-home/images/cta-images/ovt-awards2024_...0.0 ms263.0 KiB
www.aaos.org/globalassets/aaos-home/images/cta-images/common-fractures-cta.jpg0.0 ms162.7 KiB
/globalassets/aaos-home/images/partners/pacira-bioscience...0.0 ms129.2 KiB
www.aaos.org/assets/client/dist/js/sharethis.min.js3600.0 s118.9 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
www.aaos.org/globalassets/aaos-home/images/cta-images/map_webcard.gif0.0 ms78.8 KiB
cdn.optimizely.com/js/8286478868.js120.0 s69.9 KiB
www.aaos.org/globalassets/aaos-home/images/partners/stryker.png0.0 ms67.2 KiB
/bnith__n7QbTDQkVCS4hxJtGScCKyCwNgzOJqCo9kIOT-LZL_dBX1fTY...0.0 ms65.4 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
js.hs-analytics.net/analytics/1776894000000/20984690.js300.0 s44.3 KiB
www.aaos.org/globalassets/aaos-home/images/partners/zimmer-biomet.png0.0 ms42.3 KiB
js.monitor.azure.com/scripts/b/ai.2.min.js1800.0 s46.2 KiB
www.aaos.org/globalassets/aaos-global/aaos-logo-image-1.svg0.0 ms36.9 KiB
/globalassets/aaos-home/images/home_store/ondemand-web-st...0.0 ms34.3 KiB
www.aaos.org/globalassets/aaos-home/images/home_store/icl-75-cover_120x120.jpg0.0 ms34.2 KiB
www.aaos.org/globalassets/aaos-home/images/home_store/courses-ondemand_store.jpg0.0 ms34.1 KiB
www.aaos.org/globalassets/aaos-home/images/partners/depuy-synthes-logo-2025.png0.0 ms29.0 KiB
cdn.feathr.co/js/boomerang.min.js14400.0 s41.9 KiB
www.aaos.org/globalassets/aaos-home/images/home_store/oku_hk_7_120x120.jpg0.0 ms28.3 KiB
/signals/config/829587140118286?v=2.9.303&r=stable&domain...1200.0 s31.5 KiB
/signals/config/385463003039708?v=2.9.303&r=stable&domain...1200.0 s29.4 KiB
js.hubspot.com/web-interactives-embed.js600.0 s28.1 KiB
scripts.clarity.ms/0.8.60-beta/clarity.js0.0 ms25.0 KiB
www.aaos.org/globalassets/aaos-home/images/partners/arthrex-logo_black.png0.0 ms24.3 KiB
www.aaos.org/globalassets/aaos-home/images/home_store/access-logo-120x120.jpg0.0 ms23.9 KiB
www.aaos.org/globalassets/aaos-home/images/partners/sn_wordmark_rgb_orange.png0.0 ms22.9 KiB
js.hs-banner.com/v2/20984690/banner.js300.0 s23.7 KiB
/globalassets/aaos-global/footer/app-store-images/aaos.or...0.0 ms20.6 KiB
/globalassets/aaos-global/footer/app-store-images/aaos.or...0.0 ms18.9 KiB
/globalassets/aaos-home/images/home_store/2026-coding-gui...0.0 ms17.2 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
www.aaos.org/assets/client/dist/fonts/OpenSans-Semibold-webfont.woff10800.0 s21.0 KiB
www.aaos.org/assets/client/dist/fonts/OpenSans-Regular-webfont.woff10800.0 s20.9 KiB
www.aaos.org/assets/client/dist/fonts/OpenSans-Bold-webfont.woff10800.0 s20.9 KiB
www.aaos.org/globalassets/aaos-global/aaos-logo-footer.svg0.0 ms11.9 KiB
/signals/config/1186724135617250?v=2.9.303&r=stable&domai...1200.0 s13.3 KiB
www.aaos.org/Util/Find/epi-util/find.js3600.0 s6.6 KiB
sidebar.bugherd.com/embed.js?apikey=null14400.0 s7.7 KiB
sidebar.bugherd.com/embed.js?apikey=null14400.0 s7.1 KiB
munchkin.marketo.net/munchkin.js0.0 ms1.2 KiB
js.hs-scripts.com/20984690.js90.0 s1.0 KiB
pagead2.googlesyndication.com/pagead/js/r20260421/r20110914/abg_lite_fy2021.js1209600.0 s8.4 KiB
marco.feathr.co/v1/refresh0.0 ms627 B
cdn.jsdelivr.net/npm/es6-promise@4/dist/es6-promise.min.js604800.0 s2.8 KiB
/tr/?id=385463003039708&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms271 B
cdn.jsdelivr.net/npm/es6-promise@4/dist/es6-promise.auto.min.js604800.0 s2.6 KiB
/track/cmf/generic?gdpr=0&ttd_passthrough=a_id%3D62edddce...0.0 ms149 B
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js1209600.0 s1.2 KiB
/tr/?id=385463003039708&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms100 B
/tr/?id=1186724135617250&ev=PageView&dl=https%3A%2F%2Fwww...0.0 ms100 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
pagead2.googlesyndication.com/pagead/js/r20260421/r20110914/abg_lite_fy2021.js1209600.0 s0 B
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js1209600.0 s0 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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:0.217 source:map[type:text value:[unattributed]]] map[reflowTime:37.439 source:map[column:237248 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 urlProvider:network]] map[reflowTime:0.312 source:map[column:48581 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 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
div.card--vertical > a.card--basic > div.card-img > img div.card--vertical > a.card--basic > div.card-img > img
/globalassets/aaos-home/images/cta-images/access_featured...1.1 MiB1.0 MiB
Annual Meeting Speakers div.col-12 > div.box--row > div.img--container > img.card-img-simple
www.aaos.org/globalassets/aaos-home/images/hero-images/am27_hero_cfa_april-1.gif777.1 KiB733.5 KiB
div.card--vertical > a.card--basic > div.card-img > img div.card--vertical > a.card--basic > div.card-img > img
/globalassets/aaos-home/images/cta-images/ovt-awards2024_...254.8 KiB231.8 KiB
Common Fractures. Online Course Laptop div.card--vertical > a.card--basic > div.card-img > img
www.aaos.org/globalassets/aaos-home/images/cta-images/common-fractures-cta.jpg154.5 KiB131.5 KiB
Pacira div > p > a#CPlogo > img
/globalassets/aaos-home/images/partners/pacira-bioscience...121.0 KiB120.5 KiB
body.jar > div#google_image_div > a#aw0 > img.img_ad body.jar > div#google_image_div > a#aw0 > img.img_ad
tpc.googlesyndication.com/simgad/703171410624863350875.9 KiB65.3 KiB
Stryker div > p > a#CPlogo > img
www.aaos.org/globalassets/aaos-home/images/partners/stryker.png58.9 KiB58.6 KiB
Member Advantage Program div.card--vertical > a.card--basic > div.card-img > img
www.aaos.org/globalassets/aaos-home/images/cta-images/map_webcard.gif70.5 KiB55.7 KiB
Zimmer Biomet div > p > a#CPlogo > img
www.aaos.org/globalassets/aaos-home/images/partners/zimmer-biomet.png34.0 KiB32.9 KiB
AAOS OnDemand div.card--horizontal > a.card--basic > div.card-img > img
/globalassets/aaos-home/images/home_store/ondemand-web-st...26.0 KiB24.0 KiB
div.card--horizontal > a.card--basic > div.card-img > img div.card--horizontal > a.card--basic > div.card-img > img
www.aaos.org/globalassets/aaos-home/images/home_store/icl-75-cover_120x120.jpg25.9 KiB23.9 KiB
Courses OnDemand-Store div.card--horizontal > a.card--basic > div.card-img > img
www.aaos.org/globalassets/aaos-home/images/home_store/courses-ondemand_store.jpg25.8 KiB23.8 KiB
DePuy Synthes div > p > a#CPlogo > img
www.aaos.org/globalassets/aaos-home/images/partners/depuy-synthes-logo-2025.png20.7 KiB20.0 KiB
div.card--horizontal > a.card--basic > div.card-img > img div.card--horizontal > a.card--basic > div.card-img > img
www.aaos.org/globalassets/aaos-home/images/home_store/oku_hk_7_120x120.jpg20.1 KiB18.0 KiB
Arthrex div > p > a#CPlogo > img
www.aaos.org/globalassets/aaos-home/images/partners/arthrex-logo_black.png16.0 KiB15.3 KiB
Smith-Nephew div > p > a#CPlogo > img
www.aaos.org/globalassets/aaos-home/images/partners/sn_wordmark_rgb_orange.png14.6 KiB14.1 KiB
Access Plus div.card--horizontal > a.card--basic > div.card-img > img
www.aaos.org/globalassets/aaos-home/images/home_store/access-logo-120x120.jpg15.6 KiB13.6 KiB
ul.footer-app-links > li.footer-app-link > a > img ul.footer-app-links > li.footer-app-link > a > img
/globalassets/aaos-global/footer/app-store-images/aaos.or...12.3 KiB11.1 KiB
ul.footer-app-links > li.footer-app-link > a > img ul.footer-app-links > li.footer-app-link > a > img
/globalassets/aaos-global/footer/app-store-images/aaos.or...10.6 KiB9.2 KiB
Coding Guide on mobile div.card--horizontal > a.card--basic > div.card-img > img
/globalassets/aaos-home/images/home_store/2026-coding-gui...8.9 KiB6.9 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:2428.685 label:Time to first byte subpart:timeToFirstByte] map[duration:144.494 label:Resource load delay subpart:resourceLoadDelay] map[duration:1079.538 label:Resource load duration subpart:resourceLoadDuration] map[duration:80.661 label:Element render delay subpart:elementRenderDelay]]
lhId: page-1-IMG
nodeLabel: Annual Meeting Speakers
path: 1,HTML,1,BODY,17,DIV,6,MAIN,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,IMG
selector: div.col-12 > div.box--row > div.img--container > img.card-img-simple
snippet: <img src="/globalassets/aaos-home/images/hero-images/am27_hero_cfa_april-1.gif" class="card-img-simple" alt="Annual Meeting Speakers">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-1-IMG
nodeLabel: Annual Meeting Speakers
path: 1,HTML,1,BODY,17,DIV,6,MAIN,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,IMG
selector: div.col-12 > div.box--row > div.img--container > img.card-img-simple
snippet: <img src="/globalassets/aaos-home/images/hero-images/am27_hero_cfa_april-1.gif" class="card-img-simple" alt="Annual Meeting Speakers">

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.aaos.org/http/1.1
/assets/client/dist/css/shared.css?v=DyNp7GP9lbgkjaVPGpFK...http/1.1
www.aaos.org/assets/client/dist/js/sharethis.min.jshttp/1.1
/assets/client/dist/css/shared.min.css?v=umYL0barViuBUNcy...http/1.1
www.aaos.org/globalassets/aaos-global/aaos-logo-image-1.svghttp/1.1
www.aaos.org/globalassets/aaos-home/images/hero-images/am27_hero_cfa_april-1.gifhttp/1.1
/globalassets/aaos-home/images/cta-images/ovt-awards2024_...http/1.1
www.aaos.org/globalassets/aaos-home/images/cta-images/map_webcard.gifhttp/1.1
www.aaos.org/globalassets/aaos-home/images/cta-images/common-fractures-cta.jpghttp/1.1
/globalassets/aaos-home/images/cta-images/access_featured...http/1.1
/globalassets/aaos-home/images/home_store/ondemand-web-st...http/1.1
www.aaos.org/globalassets/aaos-home/images/home_store/courses-ondemand_store.jpghttp/1.1
/globalassets/aaos-home/images/home_store/2026-coding-gui...http/1.1
www.aaos.org/globalassets/aaos-home/images/home_store/oku_hk_7_120x120.jpghttp/1.1
www.aaos.org/globalassets/aaos-home/images/home_store/icl-75-cover_120x120.jpghttp/1.1
www.aaos.org/globalassets/aaos-home/images/home_store/access-logo-120x120.jpghttp/1.1
www.aaos.org/globalassets/aaos-home/images/partners/arthrex-logo_black.pnghttp/1.1
www.aaos.org/globalassets/aaos-home/images/partners/depuy-synthes-logo-2025.pnghttp/1.1
/globalassets/aaos-home/images/partners/pacira-bioscience...http/1.1
www.aaos.org/globalassets/aaos-home/images/partners/sn_wordmark_rgb_orange.pnghttp/1.1
www.aaos.org/globalassets/aaos-home/images/partners/stryker.pnghttp/1.1
www.aaos.org/globalassets/aaos-home/images/partners/zimmer-biomet.pnghttp/1.1
www.aaos.org/globalassets/aaos-global/aaos-logo-footer.svghttp/1.1
/globalassets/aaos-global/footer/app-store-images/aaos.or...http/1.1
/globalassets/aaos-global/footer/app-store-images/aaos.or...http/1.1
www.aaos.org/Util/Find/epi-util/find.jshttp/1.1
/assets/client/dist/js/shared.bundle.min.js?v=2o4lyh3fhHc...http/1.1
/bnith__n7QbTDQkVCS4hxJtGScCKyCwNgzOJqCo9kIOT-LZL_dBX1fTY...http/1.1
www.aaos.org/assets/client/dist/fonts/OpenSans-Regular-webfont.woffhttp/1.1
www.aaos.org/assets/client/dist/fonts/OpenSans-Semibold-webfont.woffhttp/1.1
www.aaos.org/assets/client/dist/fonts/OpenSans-Bold-webfont.woffhttp/1.1
www.aaos.org/api/shared/Bugherd/Get?id=Prime&_=1776894197489http/1.1
www.aaos.org/contentassets/72faca73833746f98645bc3cea94db5f/favicon_01.icohttp/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

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.

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: 584 ms
URLTime Spent
aaos.org/584 ms
www.aaos.org/0.0 ms

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.6 s
URLTime Spent
www.aaos.org/1.7 s

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: 170 ms 93.7 KiB
URLTransfer SizeEst Savings
/assets/client/dist/css/shared.css?v=DyNp7GP9lbgkjaVPGpFK...502.8 KiB93.7 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 830 ms 839.9 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.

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
The page has an unload handler in the main frame.Actionable

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 30.6 KiB
URLTransfer SizeEst Savings
www.aaos.org/assets/client/dist/js/sharethis.min.js118.2 KiB30.6 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
Pacira div > p > a#CPlogo > img
/globalassets/aaos-home/images/partners/pacira-bioscience...
Stryker div > p > a#CPlogo > img
www.aaos.org/globalassets/aaos-home/images/partners/stryker.png
Annual Meeting Speakers div.col-12 > div.box--row > div.img--container > img.card-img-simple
www.aaos.org/globalassets/aaos-home/images/hero-images/am27_hero_cfa_april-1.gif
Zimmer Biomet div > p > a#CPlogo > img
www.aaos.org/globalassets/aaos-home/images/partners/zimmer-biomet.png
DePuy Synthes div > p > a#CPlogo > img
www.aaos.org/globalassets/aaos-home/images/partners/depuy-synthes-logo-2025.png
Arthrex div > p > a#CPlogo > img
www.aaos.org/globalassets/aaos-home/images/partners/arthrex-logo_black.png
Smith-Nephew div > p > a#CPlogo > img
www.aaos.org/globalassets/aaos-home/images/partners/sn_wordmark_rgb_orange.png
div.row > div.col-6 > a.logo > img div.row > div.col-6 > a.logo > img
www.aaos.org/globalassets/aaos-global/aaos-logo-image-1.svg
ul.footer--panel > li > a.logo > img.img-responsive ul.footer--panel > li > a.logo > img.img-responsive
www.aaos.org/globalassets/aaos-global/aaos-logo-footer.svg
ul.footer-app-links > li.footer-app-link > a > img ul.footer-app-links > li.footer-app-link > a > img
/globalassets/aaos-global/footer/app-store-images/aaos.or...
ul.footer-app-links > li.footer-app-link > a > img ul.footer-app-links > li.footer-app-link > a > img
/globalassets/aaos-global/footer/app-store-images/aaos.or...

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

Max Potential First Input Delay 120 ms
Layout shift culprits
Optimize DOM size
Optimize viewport for mobile
User Timing marks and measures 9 user timings
JavaScript execution time 1.0 s
Minimizes main-thread work 1.9 s
Avoid long main-thread tasks 4 long tasks found
Avoid non-composited animations 1 animated element found
Network Requests
Network Round Trip Times 150 ms
Server Backend Latencies 270 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Avoid large layout shifts 3 layout shifts found
INP breakdown
78

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Learn more div.cc-grower > div.cc-window > span#cookieconsent:desc > a.cc-link
Join AAOS div.aaos--links > ul > li > a
AAOS Store div.aaos--links > ul > li > a
Patients & Public div.aaos--links > ul > li > a
Donate to AAOS div.aaos--links > ul > li > a
Login div#profile-buttons > div.btn-container > div.aaos--links > a
Create Account div#profile-buttons > div.btn-container > div.aaos--links > a
AAOS Store div.box--row > div.txt > h3 > a#morestore
Learn more about partnering with AAOS. div.row > div.col-12 > p > a#partner

These are opportunities to improve the legibility of your content.

Names and labels

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.row > div.col-6 > a.logo > img div.row > div.col-6 > a.logo > img
ul.footer--panel > li > a.logo > img.img-responsive ul.footer--panel > li > a.logo > img.img-responsive
ul.footer-app-links > li.footer-app-link > a > img ul.footer-app-links > li.footer-app-link > a > img
ul.footer-app-links > li.footer-app-link > a > img ul.footer-app-links > li.footer-app-link > a > img

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.container > div.row > div.col-6 > a.logo div.container > div.row > div.col-6 > a.logo
div.container > ul.footer--panel > li > a.logo div.container > ul.footer--panel > li > a.logo
li > ul.btn-container > li > a.btn li > ul.btn-container > li > a.btn
li > ul.btn-container > li > a.btn li > ul.btn-container > li > a.btn
li > ul.btn-container > li > a.btn li > ul.btn-container > li > a.btn
li > ul.btn-container > li > a.btn li > ul.btn-container > li > a.btn
li > ul.btn-container > li > a.btn li > ul.btn-container > li > a.btn
li > ul.btn-container > li > a.btn li > ul.btn-container > li > a.btn
li > ul.footer-app-links > li.footer-app-link > a li > ul.footer-app-links > li.footer-app-link > a
li > ul.footer-app-links > li.footer-app-link > a li > ul.footer-app-links > li.footer-app-link > a

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

Best practices

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

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta head > meta

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Search div.typeahead__container > div.typeahead__field > div.typeahead__query > button.btn

These items highlight common accessibility best practices.

Navigation

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

These are opportunities to improve keyboard navigation in your application.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
I UNDERSTAND! div.cc-grower > div.cc-window > div.cc-compliance > a.cc-btn
Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Form elements have associated labels
`button`, `link`, and `menuitem` elements have accessible names
ARIA attributes are used as specified for the element's role
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
Document has a `<title>` element
`<frame>` or `<iframe>` elements have a title
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
Links are distinguishable without relying on color.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
Heading elements appear in a sequentially-descending order
Document has a main landmark.
Deprecated ARIA roles were not used
Identical links have the same purpose.
`[accesskey]` values are unique
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
`<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
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
Select elements have associated label elements.
Skip links are focusable.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
`[lang]` attributes have a valid value
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Tables have different content in the summary attribute and `<caption>`.
All heading elements contain content.
Uses ARIA roles only on compatible elements
Image elements do not have `[alt]` attributes that are redundant text.
Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
`<td>` elements in a large `<table>` have one or more table headers.
73

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Unload event listeners are deprecated and will be removed.
AttributionReporting

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
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Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uses HTTPS
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
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
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
83

SEO

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

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
nav#mm-0 > div.mm-navbars_top > div.mm-navbar > a.mm-btn nav#mm-0 > div.mm-navbars_top > div.mm-navbar > a.mm-btn
nav#mm-0 > div.mm-navbars_top > div.mm-navbar > a.mm-navbar__title nav#mm-0 > div.mm-navbars_top > div.mm-navbar > a.mm-navbar__title

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.row > div.col-6 > a.logo > img div.row > div.col-6 > a.logo > img
ul.footer--panel > li > a.logo > img.img-responsive ul.footer--panel > li > a.logo > img.img-responsive
ul.footer-app-links > li.footer-app-link > a > img ul.footer-app-links > li.footer-app-link > a > img
ul.footer-app-links > li.footer-app-link > a > img ul.footer-app-links > li.footer-app-link > a > img

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

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

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