Lighthouse Desktop

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
/signals/config/1115283622788852?v=2.9.303&r=stable&domai...	1200.0 s	35.1 KiB
dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=HHS&subagency=OWH	0.0 ms	9.4 KiB
dap.digitalgov.gov/web-vitals/dist/web-vitals.attribution.iife.js	0.0 ms	4.5 KiB
cdn01.basis.net/assets/up.js?um=1	0.0 ms	3.1 KiB
s.pinimg.com/ct/lib/main.10d2511a.js	1209600.0 s	27.3 KiB
ct.pinterest.com/static/ct/token_create.js	7200.0 s	2.2 KiB
s.pinimg.com/ct/core.js	7200.0 s	2.1 KiB
static.addtoany.com/menu/page.js	86400.0 s	2.2 KiB
/config/gov/26528649-3980-406f-9755-bf3a3c6adae0.js?v=3.5...	0.0 ms	474 B
script.crazyegg.com/pages/scripts/0005/7360.js	86400.0 s	231 B
/tr/?id=1115283622788852&ev=PageView&dl=https%3A%2F%2Fwom...	0.0 ms	19 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

items: [map[node:map[type:text value:Total] score:0.22300199999999998] map[node:map[boundingRect:map[bottom:1547 height:712 left:67 right:971 top:836 width:904] lhId:page-18-DIV nodeLabel:Learn about Menopause Talking PPD path:1,HTML,1,BODY,2,DIV,4,MAIN,1,DIV,2,DIV,0,DIV,1,DIV,1,DIV selector:div.grid-row > div.usa-layout-docs__main > div#block-owh-uswds-content > div.padding-y-1 snippet:<div class="padding-y-1"> type:node] score:0.093121] map[node:map[boundingRect:map[bottom:1547 height:712 left:67 right:971 top:836 width:904] lhId:page-18-DIV nodeLabel:Learn about Menopause Talking PPD path:1,HTML,1,BODY,2,DIV,4,MAIN,1,DIV,2,DIV,0,DIV,1,DIV,1,DIV selector:div.grid-row > div.usa-layout-docs__main > div#block-owh-uswds-content > div.padding-y-1 snippet:<div class="padding-y-1"> type:node] score:0.074087 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1505 height:567 left:97 right:511 top:937 width:414] lhId:page-3-IMG nodeLabel:Navigate Menopause with Confidence path:1,HTML,1,BODY,2,DIV,4,MAIN,1,DIV,2,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,ARTICLE,2,A,0,IMG selector:div.owh-subarticles__col > article.campaign-item > a.gtm-campaigns > img.img-responsive snippet:<img src="/sites/default/files/callout_images/menopause-poster-rev.jpg" alt="Navigate Menopause with Confidence" class="img-responsive gtm-campaigns"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:827 height:463 left:67 right:971 top:364 width:904] lhId:page-21-DIV nodeLabel:Learn About Improving Maternal Health Outcomes path:1,HTML,1,BODY,2,DIV,4,MAIN,1,DIV,2,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,2,DIV selector:div#owh-homepage-carousel-1 > div.slick-list > div.slick-track > div.slick-slide snippet:<div class="slick-slide slick-current slick-active" data-slick-index="2" aria-hidden="false" tabindex="0" style="width: 904px; position: relative; left: -1808px; top: 0px; z-index: 999;"> type:node] score:0.05273 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://womenshealth.gov/themes/custom/owh_uswds/fonts/public-sans/PublicSans-Regular.woff2]] map[cause:Web font extra:map[type:url value:https://womenshealth.gov/themes/custom/owh_uswds/fonts/public-sans/PublicSans-Bold.woff2]] map[cause:Web font extra:map[type:url value:https://womenshealth.gov/themes/custom/owh_uswds/fonts/public-sans/PublicSans-Italic.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:721 height:202 left:1025 right:1261 top:519 width:235] lhId:page-13-DIV nodeLabel:The female athlete triad—low energy availability, menstrual dysfunction, and im… path:1,HTML,1,BODY,2,DIV,4,MAIN,1,DIV,2,DIV,1,ASIDE,0,DIV,1,DIV,0,DIV,0,DIV,2,DIV selector:div > div.js-view-dom-id-55565ff72a56c496f3d350f3fe0d6cd4a44b199005794c9d12e5b82440a3b825 > div.owh-container > div.views-field snippet:<div class="views-field views-field-body"> type:node] score:0.003064 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:207 height:78 left:69 right:492 top:129 width:423] lhId:page-25-IMG nodeLabel:Office on Women's Health Logo womenshealth.gov path:1,HTML,1,BODY,2,DIV,3,HEADER,0,DIV,0,DIV,0,EM,0,A,0,IMG selector:div#extended-mega-logo > em.usa-logo__image > a > img snippet:<img alt="Office on Women's Health Logo womenshealth.gov" data-entity-type="" data-entity-uuid="" src="/themes/custom/owh_uswds/assets/img/layout/owh-logo.png"> type:node]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2]]] type:subitems]]]

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.

URL	Est Savings
/themes/custom/owh_uswds/fonts/public-sans/PublicSans-Ita...	240 ms
/themes/custom/owh_uswds/fonts/public-sans/PublicSans-Reg...	235 ms
womenshealth.gov/themes/custom/owh_uswds/fonts/public-sans/PublicSans-Bold.woff2	235 ms
womenshealth.gov/themes/custom/owh_uswds/js/slick-1.8.1/fonts/slick.woff	135 ms
fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2	40 ms
/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3iUBHMdazT...	35 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.

	URL	Resource Size	Est Savings
Explore the Latest Data, Key Findings, and Progress from Participating Hospitals `div.slick-track > div.slick-slide > a.slick-image-url > img`	/sites/default/files/carousel_images/HHS-Perinatal-Improv...	239.6 KiB	180.8 KiB
Twitter Logo `div.footer-social > div.footer-social__icons > a.external-link > img`	/themes/custom/owh_uswds/assets/img/social-icons/social-t...	59.8 KiB	59.7 KiB
Learn About Improving Maternal Health Outcomes `div.slick-track > div.slick-slide > a.slick-image-url > img`	/sites/default/files/carousel_images/BMC_Pregnancy_and_Ch...	114.4 KiB	55.8 KiB
Navigate Menopause with Confidence `div.owh-subarticles__col > article.campaign-item > a.gtm-campaigns > img.img-responsive`	womenshealth.gov/sites/default/files/callout_images/menopause-poster-rev.jpg	83.0 KiB	44.8 KiB
Explore OWH CME/CE Courses `div.slick-track > div.slick-slide > a.slick-image-url > img`	/sites/default/files/carousel_images/Course-for-Womens-He...	97.0 KiB	38.4 KiB
Linkedin Logo `div.footer-social > div.footer-social__icons > a.external-link > img`	/themes/custom/owh_uswds/assets/img/social-icons/social-l...	32.9 KiB	32.8 KiB
Pinterest Logo `div.footer-social > div.footer-social__icons > a.external-link > img`	/themes/custom/owh_uswds/assets/img/social-icons/social-p...	28.5 KiB	28.5 KiB
Talking Postpartum Depression `div.owh-subarticles__col > article.campaign-item > a.gtm-campaigns > img.img-responsive`	womenshealth.gov/sites/default/files/callout_images/talking-ppd-poster.jpg	63.9 KiB	25.7 KiB
YoutubeLogo `div.footer-social > div.footer-social__icons > a.external-link > img`	/themes/custom/owh_uswds/assets/img/social-icons/social-y...	22.4 KiB	22.3 KiB
Learn about Menopause `div.slick-track > div.slick-slide > a.slick-image-url > img`	/sites/default/files/carousel_images/menopause_carousel_0...	78.6 KiB	20.0 KiB
Facebook Logo `div.footer-social > div.footer-social__icons > a.external-link > img`	/themes/custom/owh_uswds/assets/img/social-icons/social-f...	19.3 KiB	19.3 KiB
Twitter `div.sidebar__connect > div.sidebar__connect__social-icons > a.social-icon > img`	/themes/custom/owh_uswds/assets/img/social-icons/twitter_...	6.7 KiB	6.2 KiB
Linkedin `div.sidebar__connect > div.sidebar__connect__social-icons > a.social-icon > img`	/themes/custom/owh_uswds/assets/img/social-icons/linkedin...	6.2 KiB	5.7 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-0-IMG

nodeLabel: Explore the Latest Data, Key Findings, and Progress from Participating Hospitals

path: 1,HTML,1,BODY,2,DIV,4,MAIN,1,DIV,2,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,A,0,IMG

selector: div.slick-track > div.slick-slide > a.slick-image-url > img

snippet: <img src="/sites/default/files/carousel_images/HHS-Perinatal-Improvement-Collaborati…" alt="Explore the Latest Data, Key Findings, and Progress from Participating Hos…">

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.

URL	Transfer Size	Duration
/sites/default/files/asset_injector/css/footer_css-4f8f9d...	867 B
womenshealth.gov/core/modules/system/css/components/tablesort.module.css?tdwdbn	808 B
/sites/default/files/asset_injector/css/owh_subfooter-3c4...	1.1 KiB
/sites/default/files/asset_injector/css/events_global-767...	977 B
/sites/default/files/asset_injector/css/css_508_complianc...	6.2 KiB
womenshealth.gov/themes/custom/owh_uswds/js/slick-1.8.1/slick-theme.css?tdwdbn	3.5 KiB
womenshealth.gov/themes/custom/owh_uswds/css/styles.css?tdwdbn	458.5 KiB	534 ms
/core/modules/system/css/components/system-status-counter...	1.2 KiB
/sites/default/files/asset_injector/css/summary_box_with_...	746 B
/sites/default/files/asset_injector/css/admin_forms-d7bd2...	676 B
womenshealth.gov/modules/contrib/addtoany/css/addtoany.css?tdwdbn	1.4 KiB
womenshealth.gov/themes/custom/owh_uswds/js/slick-1.8.1/slick.css?tdwdbn	2.2 KiB
womenshealth.gov/themes/custom/owh_uswds/js/lightbox/css/lightbox.css?tdwdbn	3.5 KiB
womenshealth.gov/core/modules/views/css/views.module.css?tdwdbn	877 B
/core/modules/system/css/components/system-status-report-...	1000 B
/modules/contrib/paragraphs/css/paragraphs.unpublished.cs...	499 B
/core/modules/system/css/components/system-status-report-...	696 B
womenshealth.gov/core/modules/system/css/components/resize.module.css?tdwdbn	713 B
/core/modules/system/css/components/reset-appearance.modu...	691 B
womenshealth.gov/modules/contrib/extlink/css/extlink.css?tdwdbn	1.7 KiB
womenshealth.gov/core/modules/system/css/components/align.module.css?tdwdbn	926 B
womenshealth.gov/core/modules/system/css/components/fieldgroup.module.css?tdwdbn	536 B
/core/modules/system/css/components/position-container.mo...	536 B
womenshealth.gov/core/modules/system/css/components/nowrap.module.css?tdwdbn	537 B
womenshealth.gov/core/modules/system/css/components/js.module.css?tdwdbn	1.1 KiB
womenshealth.gov/core/modules/system/css/components/details.module.css?tdwdbn	569 B
womenshealth.gov/core/modules/system/css/components/item-list.module.css?tdwdbn	730 B
womenshealth.gov/core/modules/system/css/components/hidden.module.css?tdwdbn	1.8 KiB
womenshealth.gov/core/modules/system/css/components/clearfix.module.css?tdwdbn	752 B
/core/modules/system/css/components/container-inline.modu...	717 B
/css?family=Roboto+Condensed:400,400i,700,700i\|Roboto:400...	2.9 KiB	283 ms

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.

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

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: 400 ms 432.6 KiB

URL	Transfer Size	Est Savings
womenshealth.gov/themes/custom/owh_uswds/css/styles.css?tdwdbn	457.5 KiB	432.6 KiB

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 37.4 KiB

URL	Transfer Size	Est Savings
womenshealth.gov/core/misc/drupal.js?v=10.6.5	20.6 KiB	16.2 KiB
womenshealth.gov/modules/contrib/extlink/js/extlink.js?tdwdbn	23.8 KiB	10.0 KiB
womenshealth.gov/themes/custom/owh_uswds/js/lightbox/js/lightbox.js?tdwdbn	20.3 KiB	8.5 KiB
womenshealth.gov/themes/custom/owh_uswds/js/content.js?tdwdbn	7.2 KiB	2.7 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: 0.0 ms 497.6 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64k1	147.0 KiB	105.8 KiB
www.googletagmanager.com/gtag/js?id=G-KYW6DGLD5C&cx=c&gtm=4e64k1	166.6 KiB	67.5 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L	147.0 KiB	62.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-WDVWHPS	136.8 KiB	62.2 KiB
womenshealth.gov/themes/custom/owh_uswds/js/twitter_widgets.js?tdwdbn	95.0 KiB	53.1 KiB
womenshealth.gov/themes/custom/owh_uswds/assets/js/uswds.min.js?v=10.6.5	79.2 KiB	51.9 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	36.9 KiB
womenshealth.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.1	85.5 KiB	36.7 KiB
static.addtoany.com/menu/modules/core.ydpp7jcu.js	25.7 KiB	21.0 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
womenshealth.gov/themes/custom/owh_uswds/css/styles.css?tdwdbn	458.5 KiB
/sites/default/files/carousel_images/HHS-Perinatal-Improv...	240.3 KiB
www.googletagmanager.com/gtag/js?id=G-KYW6DGLD5C&cx=c&gtm=4e64k1	166.7 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64k1	147.0 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L	147.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-WDVWHPS	137.2 KiB
/sites/default/files/carousel_images/BMC_Pregnancy_and_Ch...	115.0 KiB
/sites/default/files/carousel_images/Course-for-Womens-He...	97.5 KiB
connect.facebook.net/en_US/fbevents.js	96.6 KiB
womenshealth.gov/themes/custom/owh_uswds/js/twitter_widgets.js?tdwdbn	95.5 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
Explore the Latest Data, Key Findings, and Progress from Participating Hospitals `div.slick-track > div.slick-slide > a.slick-image-url > img`	/sites/default/files/carousel_images/HHS-Perinatal-Improv...
Explore OWH CME/CE Courses `div.slick-track > div.slick-slide > a.slick-image-url > img`	/sites/default/files/carousel_images/Course-for-Womens-He...
Learn About Improving Maternal Health Outcomes `div.slick-track > div.slick-slide > a.slick-image-url > img`	/sites/default/files/carousel_images/BMC_Pregnancy_and_Ch...
Learn about Menopause `div.slick-track > div.slick-slide > a.slick-image-url > img`	/sites/default/files/carousel_images/menopause_carousel_0...
Navigate Menopause with Confidence `div.owh-subarticles__col > article.campaign-item > a.gtm-campaigns > img.img-responsive`	womenshealth.gov/sites/default/files/callout_images/menopause-poster-rev.jpg
Talking Postpartum Depression `div.owh-subarticles__col > article.campaign-item > a.gtm-campaigns > img.img-responsive`	womenshealth.gov/sites/default/files/callout_images/talking-ppd-poster.jpg
home icon `ul.usa-nav__primary > li.usa-nav__primary-item > a.usa-accordion__button > img.hide-mobile`	womenshealth.gov/themes/custom/owh_uswds/assets/img/home_icon.png
Office on Women's Health Logo womenshealth.gov `div#extended-mega-logo > em.usa-logo__image > a > img`	womenshealth.gov/themes/custom/owh_uswds/assets/img/layout/owh-logo.png
Pinterest `div.sidebar__connect > div.sidebar__connect__social-icons > a.social-icon > img`	/themes/custom/owh_uswds/assets/img/social-icons/pinteres...
Youtube `div.sidebar__connect > div.sidebar__connect__social-icons > a.social-icon > img`	/themes/custom/owh_uswds/assets/img/social-icons/youtube_...
Twitter `div.sidebar__connect > div.sidebar__connect__social-icons > a.social-icon > img`	/themes/custom/owh_uswds/assets/img/social-icons/twitter_...
Facebook `div.sidebar__connect > div.sidebar__connect__social-icons > a.social-icon > img`	/themes/custom/owh_uswds/assets/img/social-icons/facebook...
Linkedin `div.sidebar__connect > div.sidebar__connect__social-icons > a.social-icon > img`	/themes/custom/owh_uswds/assets/img/social-icons/linkedin...
U.S. flag `header.usa-banner__header > div.usa-banner__inner > div.grid-col-auto > img.usa-banner__header-flag`	womenshealth.gov/themes/custom/owh_uswds/assets/img/us_flag_small.png

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Element	Layout shift score
Learn about Menopause Talking PPD `div.grid-row > div.usa-layout-docs__main > div#block-owh-uswds-content > div.padding-y-1`	0.093
Learn about Menopause Talking PPD `div.grid-row > div.usa-layout-docs__main > div#block-owh-uswds-content > div.padding-y-1`	0.074
Learn About Improving Maternal Health Outcomes `div#owh-homepage-carousel-1 > div.slick-list > div.slick-track > div.slick-slide`	0.053
The female athlete triad—low energy availability, menstrual dysfunction, and im… `div > div.js-view-dom-id-55565ff72a56c496f3d350f3fe0d6cd4a44b199005794c9d12e5b82440a3b825 > div.owh-container > div.views-field`	0.003

●Time to Interactive 2.4 s

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Max Potential First Input Delay 60 ms

●Minify CSS

●User Timing marks and measures 15 user timings

●JavaScript execution time 0.2 s

●Minimizes main-thread work 0.8 s

●Avoid long main-thread tasks 1 long task found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 90 ms

●Server Backend Latencies 140 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 100 ms

○INP breakdown

○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

●Form elements have associated labels

●`[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

●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 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

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

○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

○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.

○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.

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 / Warning	Source
AttributionReporting	connect.facebook.net/en_US/fbevents.js line 279, col 769

●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

●No browser errors logged to the console

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

●Ensure CSP is effective against XSS attacks

●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

○Use a strong HSTS policy

○Mitigate clickjacking with XFO or CSP

SEO

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

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
womenshealth.gov/node/1501	Read more

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 are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`