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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

50

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
/sites/www/files/documents/Homepage Stories Section/news ...0.0 ms610.9 KiB
/sites/www/files/documents/Homepage Stories Section/succe...0.0 ms386.1 KiB
/sites/www/files/documents/Innovation & Industries/Advan ...0.0 ms246.5 KiB
/themes/contrib/bootstrap5/dist/bootstrap/5.3.8/dist/js/b...0.0 ms203.2 KiB
/sites/www/files/documents/Innovation & Industries/Touris...0.0 ms157.5 KiB
/sites/www/files/documents/Innovation & Industries/food &...0.0 ms156.0 KiB
www.nd.gov/sites/www/files/documents/Innovation%20%26%20Industries/UAS.jpg0.0 ms135.8 KiB
/sites/www/files/documents/Innovation & Industries/Energy...0.0 ms129.6 KiB
www.nd.gov/sites/www/files/documents/Innovation%20%26%20Industries/IT.jpg0.0 ms119.9 KiB
/sites/default/files/css/css_BRd2xPi7oS-9B7L_A8rxzXRdk149...0.0 ms107.3 KiB
/sites/www/files/documents/Homepage Stories Section/Medor...0.0 ms93.7 KiB
www.nd.gov/core/assets/vendor/jquery/jquery.min.js?v=4.0.0-rc.10.0 ms77.2 KiB
www.nd.gov/core/misc/ajax.js?v=11.3.20.0 ms64.7 KiB
www.nd.gov/libraries/slick/slick/slick.min.js?v=1.x0.0 ms52.1 KiB
/sites/default/files/styles/slideshow_banner_ipad/public/...0.0 ms39.0 KiB
/sites/default/files/styles/slideshow_banner_ipad/public/...0.0 ms28.3 KiB
www.nd.gov/modules/contrib/extlink/js/extlink.js?td8f340.0 ms23.9 KiB
www.nd.gov/core/misc/position.js?v=11.3.20.0 ms22.1 KiB
i.ytimg.com/vi/gbVMHlegal0/sddefault.jpg7200.0 s27.8 KiB
www.nd.gov/core/misc/drupal.js?v=11.3.20.0 ms20.3 KiB
www.nd.gov/core/assets/vendor/jquery.ui/ui/widgets/resizable-min.js?v=11.3.20.0 ms19.1 KiB
www.nd.gov/core/assets/vendor/jquery.ui/ui/widgets/draggable-min.js?v=11.3.20.0 ms18.1 KiB
www.nd.gov/themes/custom/ndit_base/js/sorttable.js?td8f340.0 ms16.5 KiB
www.nd.gov/core/assets/vendor/jquery.ui/ui/widgets/dialog-min.js?v=11.3.20.0 ms13.0 KiB
www.nd.gov/modules/contrib/gtranslate/js/dropdown.js0.0 ms12.6 KiB
www.nd.gov/core/misc/dialog/dialog.ajax.js?v=11.3.20.0 ms9.9 KiB
www.nd.gov/core/assets/vendor/jquery.ui/ui/widget-min.js?v=11.3.20.0 ms8.5 KiB
www.nd.gov/core/misc/message.js?v=11.3.20.0 ms8.3 KiB
www.nd.gov/core/misc/displace.js?v=11.3.20.0 ms7.8 KiB
www.nd.gov/themes/custom/ndit_base/js/mobile-menu.js?td8f340.0 ms6.8 KiB
www.nd.gov/core/assets/vendor/jquery.ui/ui/widgets/button-min.js?v=11.3.20.0 ms6.1 KiB
www.nd.gov/core/assets/vendor/tabbable/index.umd.min.js?v=6.3.00.0 ms6.1 KiB
/sites/default/files/css/css_O_BpzmVozTnfLF9IE-mvB04n3MFc...0.0 ms5.4 KiB
www.nd.gov/core/misc/progress.js?v=11.3.20.0 ms5.2 KiB
www.nd.gov/themes/custom/ndit_base/js/main-menu.js?td8f340.0 ms4.6 KiB
www.nd.gov/core/misc/dialog/dialog.jquery-ui.js?v=11.3.20.0 ms4.6 KiB
www.nd.gov/core/assets/vendor/jquery.ui/ui/widgets/controlgroup-min.js?v=11.3.20.0 ms4.5 KiB
www.nd.gov/core/assets/vendor/jquery.ui/ui/widgets/checkboxradio-min.js?v=11.3.20.0 ms4.4 KiB
www.nd.gov/core/misc/announce.js?v=11.3.20.0 ms4.3 KiB
www.nd.gov/core/misc/dialog/dialog.position.js?v=11.3.20.0 ms4.2 KiB
www.nd.gov/core/assets/vendor/tua-body-scroll-lock/tua-bsl.umd.min.js?v=11.3.20.0 ms4.0 KiB
/sites/default/files/styles/logo/public/documents/theme/N...0.0 ms4.0 KiB
www.nd.gov/core/misc/dialog/dialog.js?v=11.3.20.0 ms3.7 KiB
app-script.monsido.com/v2/monsido-script.js300.0 s3.7 KiB
www.nd.gov/modules/contrib/webform/js/webform.dialog.js?td8f340.0 ms3.4 KiB
www.nd.gov/core/assets/vendor/jquery.ui/ui/widgets/mouse-min.js?v=11.3.20.0 ms3.3 KiB
www.nd.gov/themes/custom/ndit_base/js/jquery.ntm.js?td8f340.0 ms3.3 KiB
www.nd.gov/themes/custom/ndit_base/js/menu-control.js?td8f340.0 ms2.8 KiB
www.nd.gov/themes/custom/ndit_base/js/chatbot.js?td8f340.0 ms2.5 KiB
www.nd.gov/modules/contrib/back_to_top/js/back_to_top.js?v=11.3.20.0 ms2.4 KiB
www.nd.gov/modules/custom/ndit_config_pages/file_link_icons/js/icons.js?v=1.x0.0 ms2.4 KiB
www.nd.gov/modules/custom/ndit_equal_height/js/equal-height.js?td8f340.0 ms2.3 KiB
www.nd.gov/modules/contrib/webform/js/webform.drupal.dialog.js?td8f340.0 ms2.1 KiB
www.nd.gov/core/misc/dialog/dialog-deprecation.js?v=11.3.20.0 ms2.1 KiB
www.nd.gov/themes/custom/ndit_base/js/embed360.js?td8f340.0 ms2.0 KiB
www.nd.gov/themes/custom/ndit_base/js/google_translate.js?td8f340.0 ms1.9 KiB
www.nd.gov/core/assets/vendor/loadjs/loadjs.min.js?v=4.3.00.0 ms1.8 KiB
www.nd.gov/themes/custom/ndit_base/js/slick_override.js?td8f340.0 ms1.8 KiB
www.nd.gov/themes/custom/ndit_base/js/related-resource.js?td8f340.0 ms1.7 KiB
www.nd.gov/themes/custom/ndit_base/js/accordion-auto-open.js?td8f340.0 ms1.6 KiB
www.nd.gov/core/misc/debounce.js?v=11.3.20.0 ms1.5 KiB
www.nd.gov/themes/custom/ndit_base/js/site-login-page.js?td8f340.0 ms1.5 KiB
www.nd.gov/modules/contrib/google_tag/js/gtag.js?td8f340.0 ms1.4 KiB
www.nd.gov/core/assets/vendor/once/once.min.js?v=1.0.10.0 ms1.4 KiB
www.nd.gov/core/assets/vendor/jquery.ui/ui/form-reset-mixin-min.js?v=11.3.20.0 ms1.1 KiB
www.nd.gov/core/misc/drupal.init.js?v=11.3.20.0 ms1013 B
www.nd.gov/core/assets/vendor/jquery.ui/ui/focusable-min.js?v=11.3.20.0 ms959 B
www.nd.gov/core/modules/ckeditor5/js/ckeditor5.dialog.fix.js?v=11.3.20.0 ms902 B
www.nd.gov/core/misc/drupalSettingsLoader.js?v=11.3.20.0 ms847 B
www.nd.gov/themes/custom/ndit_base/js/embed-interactions.js?td8f340.0 ms785 B
www.nd.gov/core/assets/vendor/jquery.ui/ui/scroll-parent-min.js?v=11.3.20.0 ms777 B
www.nd.gov/core/assets/vendor/jquery.ui/ui/labels-min.js?v=11.3.20.0 ms774 B
www.nd.gov/core/assets/vendor/jquery.ui/ui/disable-selection-min.js?v=11.3.20.0 ms706 B
www.nd.gov/core/assets/vendor/jquery.ui/ui/jquery-patch-min.js?v=11.3.20.0 ms673 B
www.nd.gov/core/assets/vendor/jquery.ui/ui/unique-id-min.js?v=11.3.20.0 ms643 B
www.nd.gov/themes/custom/ndit_base/js/top-banner.js?td8f340.0 ms627 B
www.nd.gov/themes/custom/ndit_base/js/pdf-caption-links.js?td8f340.0 ms613 B
www.nd.gov/themes/custom/ndit_base/js/slideshow.js?td8f340.0 ms606 B
www.nd.gov/modules/contrib/google_tag/js/gtag.ajax.js?td8f340.0 ms589 B
www.nd.gov/core/assets/vendor/jquery.ui/ui/keycode-min.js?v=11.3.20.0 ms579 B
www.nd.gov/core/assets/vendor/jquery.ui/ui/plugin-min.js?v=11.3.20.0 ms552 B
www.nd.gov/core/assets/vendor/jquery.ui/ui/data-min.js?v=11.3.20.0 ms518 B
www.nd.gov/core/assets/vendor/jquery.ui/ui/version-min.js?v=11.3.20.0 ms257 B
www.nd.gov/modules/contrib/slick/js/jquery-type-polyfill.min.js?td8f340.0 ms250 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:0.106198] map[node:map[boundingRect:map[bottom:561 height:385 left:0 right:412 top:176 width:412] lhId:page-14-DIV nodeLabel:Best of the World 2026 - North Dakota Badlands National Geographic has named t… path:1,HTML,1,BODY,1,DIV,1,MAIN,3,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,DIV selector:div.slick-track > div#slick-slide01 > div > div.ndit-slide snippet:<div class="ndit-slide" style="width: 100%; display: inline-block;"> type:node] score:0.105625 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:128 height:64 left:8 right:247 top:64 width:239] lhId:page-18-IMG nodeLabel:State logo, which reads North Dakota, Be Legendary path:1,HTML,1,BODY,1,DIV,0,HEADER,1,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.view-content > div > a > img.img-fluid snippet:<img loading="lazy" src="/sites/default/files/styles/logo/public/documents/theme/ND.%20Be%20Leg.%20…" width="239" height="64" alt="State logo, which reads North Dakota, Be Legendary" typeof="Image" class="img-fluid image-style-logo"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:170 height:28 left:272 right:404 top:142 width:132] lhId:page-10-DIV nodeLabel:Main navigation Mobile path:1,HTML,1,BODY,1,DIV,0,HEADER,2,DIV,1,DIV,0,DIV,1,DIV selector:div#main-nav > div#mobile-main-menu > div.row > div.col-4 snippet:<div class="col-4 d-flex justify-content-end"> type:node] score:0.000514 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2791 height:350 left:24 right:388 top:2441 width:364] lhId:page-4-IMG nodeLabel:food & ag.jpg path:1,HTML,1,BODY,1,DIV,1,MAIN,3,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,ARTICLE,0,DIV,4,DIV,0,DIV,0,DIV,1,DIV,1,SECTION,0,DIV,0,DIV,0,DIV,0,P,0,A,0,IMG selector:div.col-sm-4 > p.text-align-center > a > img snippet:<img src="/sites/www/files/documents/Innovation%20%26%20Industries/food%20%26%20ag.j…" alt="food &amp; ag.jpg" width="364" height="350"> type:node]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/aleo/v16/c4mh1nF8G8_swAj50xVssIV1_A.woff2]] map[cause:Web font extra:map[type:url value:https://use.fontawesome.com/releases/v6.4.2/webfonts/fa-brands-400.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTUGmu0SC55K5gw.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:170 height:28 left:272 right:404 top:142 width:132] lhId:page-10-DIV nodeLabel:Main navigation Mobile path:1,HTML,1,BODY,1,DIV,0,HEADER,2,DIV,1,DIV,0,DIV,1,DIV selector:div#main-nav > div#mobile-main-menu > div.row > div.col-4 snippet:<div class="col-4 d-flex justify-content-end"> type:node] score:5.9e-05 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2791 height:350 left:24 right:388 top:2441 width:364] lhId:page-4-IMG nodeLabel:food & ag.jpg path:1,HTML,1,BODY,1,DIV,1,MAIN,3,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,ARTICLE,0,DIV,4,DIV,0,DIV,0,DIV,1,DIV,1,SECTION,0,DIV,0,DIV,0,DIV,0,P,0,A,0,IMG selector:div.col-sm-4 > p.text-align-center > a > img snippet:<img src="/sites/www/files/documents/Innovation%20%26%20Industries/food%20%26%20ag.j…" alt="food &amp; ag.jpg" width="364" height="350"> type:node]] map[cause:Web font extra:map[type:url value:https://use.fontawesome.com/releases/v6.4.2/webfonts/fa-solid-900.woff2]]] type:subitems]]]
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:0.109216] map[node:map[boundingRect:map[bottom:1181 height:590 left:0 right:412 top:591 width:412] lhId:page-17-DIV nodeLabel:BE LEGENDARY Welcome to North Dakota where possibility is as endless as the ho… path:1,HTML,1,BODY,1,DIV,1,MAIN,3,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,ARTICLE,0,DIV,1,DIV selector:section#block-ndit-base-content > article.node > div.node__content > div.ndit_base_layouts snippet:<div class="ndit_base_layouts"> type:node] score:0.109216 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2791 height:350 left:24 right:388 top:2441 width:364] lhId:page-4-IMG nodeLabel:food & ag.jpg path:1,HTML,1,BODY,1,DIV,1,MAIN,3,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,ARTICLE,0,DIV,4,DIV,0,DIV,0,DIV,1,DIV,1,SECTION,0,DIV,0,DIV,0,DIV,0,P,0,A,0,IMG selector:div.col-sm-4 > p.text-align-center > a > img snippet:<img src="/sites/www/files/documents/Innovation%20%26%20Industries/food%20%26%20ag.j…" alt="food &amp; ag.jpg" width="364" height="350"> type:node]]] type:subitems]]]

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.

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
news (sm) div.keylinks > div.col-sm-4 > a > img
/sites/www/files/documents/Homepage Stories Section/news ...610.3 KiB549.7 KiB
success (sm).jpg div.keylinks > div.col-sm-4 > a > img
/sites/www/files/documents/Homepage Stories Section/succe...385.7 KiB325.1 KiB
Advan Man2.jpg div.col-sm-4 > p.text-align-center > a > img
/sites/www/files/documents/Innovation & Industries/Advan ...246.2 KiB225.5 KiB
Tourism (1).jpg div.col-sm-4 > p.text-align-center > a > img
/sites/www/files/documents/Innovation & Industries/Touris...157.3 KiB136.6 KiB
food & ag.jpg div.col-sm-4 > p.text-align-center > a > img
/sites/www/files/documents/Innovation & Industries/food &...155.8 KiB135.1 KiB
UAS.jpg div.col-sm-4 > p.text-align-center > a > img
www.nd.gov/sites/www/files/documents/Innovation%20%26%20Industries/UAS.jpg135.7 KiB114.9 KiB
energy & nat res2.jpg div.col-sm-4 > p.text-align-center > a > img
/sites/www/files/documents/Innovation & Industries/Energy...129.5 KiB108.7 KiB
IT.jpg div.col-sm-4 > p.text-align-center > a > img
www.nd.gov/sites/www/files/documents/Innovation%20%26%20Industries/IT.jpg119.8 KiB99.0 KiB
Medora Musical_0.jpg div.clearfix > div.keylinks > div.col-sm-4 > img
/sites/www/files/documents/Homepage Stories Section/Medor...93.5 KiB36.9 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-9-IMG
nodeLabel: div.ndit-slide > div.ndit-slide-image-wrapper > div.ndit-slide-image > img.slide-image
path: 1,HTML,1,BODY,1,DIV,1,MAIN,3,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,IMG
selector: div.ndit-slide > div.ndit-slide-image-wrapper > div.ndit-slide-image > img.slide-image
snippet: <img class="slide-image img-fluid" loading="lazy" srcset="/sites/default/files/styles/slideshow_banner_mobile/public/documents/Gover…" sizes="100vw" width="350" height="300" src="https://www.nd.gov/sites/default/files/styles/slideshow_banner_ipad/public…" alt="" typeof="foaf:Image">

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

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: 1.4 s
URLTime Spent
nd.gov/1.4 s
www.nd.gov/0.0 ms

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.

ElementLayout shift score
BE LEGENDARY Welcome to North Dakota where possibility is as endless as the ho… section#block-ndit-base-content > article.node > div.node__content > div.ndit_base_layouts
0.109
Best of the World 2026 - North Dakota Badlands National Geographic has named t… div.slick-track > div#slick-slide01 > div > div.ndit-slide
0.106
Main navigation Mobile div#main-nav > div#mobile-main-menu > div.row > div.col-4
0.001
Main navigation Mobile div#main-nav > div#mobile-main-menu > div.row > div.col-4
0.000

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 800 ms 123.7 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.

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Other642 ms
Script Evaluation611 ms
Style & Layout528 ms
Script Parsing & Compilation193 ms
Parse HTML & CSS178 ms
Rendering96 ms

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

Optimize DOM size
Forced reflow
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 5 user timings
JavaScript execution time 0.6 s
Avoid long main-thread tasks 5 long tasks found
Image elements have explicit `width` and `height`
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 210 ms
Server Backend Latencies 230 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 310 ms
INP breakdown
Avoid non-composited animations
97

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

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
# 3 Annual Crude Oil Production div.layout > div.col-lg-6 > section.block > a.ranking-link
# 1 In 10 Crops div.layout > div.col-lg-4 > section.block > a.ranking-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
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.
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.
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
Uses ARIA roles only on compatible elements
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 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
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.
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.
96

Best Practices

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
State logo, which reads North Dakota, Be Legendary div.view-content > div > a > img.img-fluid
/sites/default/files/styles/logo/public/documents/theme/N...239 x 64239 x 64359 x 96
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
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
92

SEO

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

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