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
www.supremecourt.gov/script/video.js	120.0 s	153.6 KiB
www.supremecourt.gov/assets/fontawesome/webfonts/fa-solid-900.woff2	120.0 s	153.2 KiB
www.supremecourt.gov/images/banners/HomePage4.jpg	120.0 s	150.9 KiB
/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_R...	109485.0 s	192.3 KiB
www.supremecourt.gov/fonts/SourceSansPro-Regular.ttf	120.0 s	67.9 KiB
www.supremecourt.gov/images/scous_seal.png	120.0 s	41.3 KiB
www.supremecourt.gov/didyouknow/images/2025-35a-sm.jpg	120.0 s	40.2 KiB
www.supremecourt.gov/js/jquery-3.7.1.min.js	120.0 s	30.0 KiB
www.supremecourt.gov/images/courtroom_sm.jpg	120.0 s	29.7 KiB
www.supremecourt.gov/fonts/Cinzel-Regular.ttf	120.0 s	25.3 KiB
www.supremecourt.gov/assets/fontawesome/css/fontawesome.css	120.0 s	18.5 KiB
www.supremecourt.gov/css/bootstrap.min.css	120.0 s	16.5 KiB
www.supremecourt.gov/js/bootstrap.min.js	120.0 s	15.2 KiB
www.supremecourt.gov/styles/video-js.css	120.0 s	10.9 KiB
www.supremecourt.gov/images/loading.gif	120.0 s	8.3 KiB
s.go-mpulse.net/boomerang/T5V7Y-Q8M8U-BKDFY-XWX7C-XPH3U	604800.0 s	57.4 KiB
www.supremecourt.gov/assets/fontawesome/css/brands.css	120.0 s	5.3 KiB
www.supremecourt.gov/styles/Calendar/sprite.gif	120.0 s	4.7 KiB
www.supremecourt.gov/images/live_icon.png	120.0 s	4.3 KiB
www.supremecourt.gov/styles/newBootStrap2.css	120.0 s	3.8 KiB
www.supremecourt.gov/css/bootstrap-theme.min.css	120.0 s	2.9 KiB
/WebResource.axd?d=VdPoLqp1pEU6N0-IfFplZCUX0kq-KWC5tHDI0k...	109485.0 s	6.2 KiB
www.supremecourt.gov/script/lightbox-2.6.min.js	120.0 s	2.3 KiB
www.supremecourt.gov/styles/Calendar.Web21.css	120.0 s	1.8 KiB
www.supremecourt.gov/images/CalDate/day3.gif	120.0 s	1.5 KiB
www.supremecourt.gov/styles/lightbox.css	120.0 s	1.4 KiB
www.supremecourt.gov/images/prev.png	120.0 s	1.4 KiB
www.supremecourt.gov/images/next.png	120.0 s	1.3 KiB
www.supremecourt.gov/images/calDate/day2.gif	120.0 s	1.2 KiB
www.supremecourt.gov/styles/slideshow1.css	120.0 s	963 B
/ScriptResource.axd?d=nv7asgRUU0tRmHNR2D6t1Mz6ZxijnNM9P9Q...	394072.0 s	5.4 KiB
www.supremecourt.gov/images/calDate/sp17.gif	120.0 s	841 B
/WebResource.axd?d=abSXP-RgNuAsfhlSYpnpbLwgAe9DSJw3Vzsn2C...	109485.0 s	2.1 KiB
/WebResource.axd?d=pynGkmcFUV13He1Qd6_TZGVbOm9V68oIIktI_W...	394073.0 s	4.5 KiB
/WebResource.axd?d=AvBWCtbpLXYjyyNienFv2AP4BqK-TzyR3MjpZL...	109485.0 s	1.9 KiB
www.supremecourt.gov/assets/fontawesome/css/solid.css	120.0 s	638 B
www.supremecourt.gov/styles/radlistbox.css	120.0 s	601 B
/WebResource.axd?d=QKX1AO1vX8ebWKfbb4eOTKEEKz4-7lyi6HiEtK...	353335.0 s	2.9 KiB
/WebResource.axd?d=I2KMDU4OojcY5XW9Fb-hAbxpzcZLF251lyK3gs...	109486.0 s	1.3 KiB
www.supremecourt.gov/images/close.png	120.0 s	304 B
www.supremecourt.gov/images/calDate/day.gif	120.0 s	284 B
/WebResource.axd?d=gZI-YTWhiIXO9Qn8XQrp5nbbKGNUH3IvreACGc...	109486.0 s	717 B
/WebResource.axd?d=6d0ORl_GDQ8il0vfaye5YfLYYl9sEUhWsDW3Pj...	110769.0 s	705 B
/WebResource.axd?d=JoBkLzP19aTuxbWOhHobYsa30HvStoJLmW0EUz...	394073.0 s	802 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.

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
Supreme Court of the United States `div.row > div.col-md-6 > a#ctl00_hypSealLink > img#ctl00_imgSeal`	www.supremecourt.gov/images/scous_seal.png	41.3 KiB	34.8 KiB
Mahogany tall clock by William Claggett, circa 1735–1748, previously owned by J… `div.spotlightimgbox > div.image-set > a > img.img-responsive`	www.supremecourt.gov/didyouknow/images/2025-35a-sm.jpg	40.1 KiB	27.2 KiB
div.container > div.col-lg-5 > div > img.img-responsive `div.container > div.col-lg-5 > div > img.img-responsive`	www.supremecourt.gov/images/courtroom_sm.jpg	29.7 KiB	18.5 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-3-HEADER

nodeLabel: body > form#aspnetForm > header.header-image

path: 1,HTML,1,BODY,0,FORM,11,HEADER

selector: body > form#aspnetForm > header.header-image

snippet: <header class="header-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

value: No additional origins are good candidates for preconnecting

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_R...	192.3 KiB	400 ms
www.supremecourt.gov/script/video.js	153.6 KiB	458 ms
www.supremecourt.gov/js/bootstrap.min.js	15.2 KiB	178 ms
www.supremecourt.gov/script/lightbox-2.6.min.js	2.3 KiB	138 ms
/ScriptResource.axd?d=nv7asgRUU0tRmHNR2D6t1Mz6ZxijnNM9P9Q...	5.4 KiB
www.supremecourt.gov/js/jquery-3.7.1.min.js	30.0 KiB	160 ms
/WebResource.axd?d=abSXP-RgNuAsfhlSYpnpbLwgAe9DSJw3Vzsn2C...	2.1 KiB
/WebResource.axd?d=QKX1AO1vX8ebWKfbb4eOTKEEKz4-7lyi6HiEtK...	2.9 KiB
/WebResource.axd?d=I2KMDU4OojcY5XW9Fb-hAbxpzcZLF251lyK3gs...	1.3 KiB
/WebResource.axd?d=VdPoLqp1pEU6N0-IfFplZCUX0kq-KWC5tHDI0k...	6.2 KiB
/WebResource.axd?d=6d0ORl_GDQ8il0vfaye5YfLYYl9sEUhWsDW3Pj...	705 B
/WebResource.axd?d=AvBWCtbpLXYjyyNienFv2AP4BqK-TzyR3MjpZL...	1.9 KiB
www.supremecourt.gov/assets/fontawesome/css/solid.css	638 B	218 ms
www.supremecourt.gov/css/bootstrap.min.css	16.5 KiB	258 ms
www.supremecourt.gov/styles/slideshow1.css	963 B
/WebResource.axd?d=gZI-YTWhiIXO9Qn8XQrp5nbbKGNUH3IvreACGc...	717 B
www.supremecourt.gov/styles/video-js.css	10.9 KiB	120 ms
www.supremecourt.gov/styles/lightbox.css	1.4 KiB
www.supremecourt.gov/styles/Calendar.Web21.css	1.8 KiB
www.supremecourt.gov/styles/radlistbox.css	601 B
www.supremecourt.gov/styles/newBootStrap2.css	3.8 KiB
www.supremecourt.gov/css/bootstrap-theme.min.css	2.9 KiB	218 ms
www.supremecourt.gov/assets/fontawesome/css/fontawesome.css	18.5 KiB
www.supremecourt.gov/assets/fontawesome/css/brands.css	5.3 KiB	218 ms
/WebResource.axd?d=JoBkLzP19aTuxbWOhHobYsa30HvStoJLmW0EUz...	802 B	138 ms
/WebResource.axd?d=pynGkmcFUV13He1Qd6_TZGVbOm9V68oIIktI_W...	4.5 KiB	138 ms

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: 100 ms 43.5 KiB

URL	Transfer Size	Est Savings
www.supremecourt.gov/assets/fontawesome/css/fontawesome.css	18.3 KiB	18.1 KiB
www.supremecourt.gov/css/bootstrap.min.css	16.2 KiB	14.8 KiB
www.supremecourt.gov/styles/video-js.css	10.7 KiB	10.7 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: 390 ms 307.6 KiB

URL	Transfer Size	Est Savings
/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_R...	192.3 KiB	139.6 KiB
www.supremecourt.gov/script/video.js	153.2 KiB	135.5 KiB
s.go-mpulse.net/boomerang/T5V7Y-Q8M8U-BKDFY-XWX7C-XPH3U	57.2 KiB	32.5 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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: 0.0 ms 3.1 KiB

URL	Transfer Size	Est Savings
www.supremecourt.gov/assets/fontawesome/css/fontawesome.css	18.5 KiB	3.1 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
Mahogany tall clock by William Claggett, circa 1735–1748, previously owned by J… `div.spotlightimgbox > div.image-set > a > img.img-responsive`	www.supremecourt.gov/didyouknow/images/2025-35a-sm.jpg
div.container > div.col-lg-5 > div > img.img-responsive `div.container > div.col-lg-5 > div > img.img-responsive`	www.supremecourt.gov/images/courtroom_sm.jpg
Supreme Court of the United States `div.row > div.col-md-6 > a#ctl00_hypSealLink > img#ctl00_imgSeal`	www.supremecourt.gov/images/scous_seal.png
Live Audio `div.col-md-2 > a > div > img.quick-icon`	www.supremecourt.gov/images/live_icon.png
Holiday `div#ctl00_MainEditable_pnlLegend > a#legendHol > span > img`	www.supremecourt.gov/images/calDate/day.gif

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

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: 219 ms

URL	Time Spent
supremecourt.gov/	219 ms
www.supremecourt.gov/	0.0 ms

●Time to Interactive 2.1 s

●Layout shift culprits

●Optimize DOM size

●Font display

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Max Potential First Input Delay 50 ms

●Minify JavaScript

●Avoids enormous network payloads Total size was 1,132 KiB

●JavaScript execution time 0.1 s

●Minimizes main-thread work 0.4 s

●Network Requests

●Network Round Trip Times 10 ms

●Server Backend Latencies 100 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 70 ms

○INP breakdown

○User Timing marks and measures

○Avoid long main-thread tasks

○Avoid non-composited animations

○Avoid large layout shifts

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
Electronic Filing `div.container > div.center-block > div.col-md-2 > a`
Courtroom Seating `div.container > div.center-block > div.col-md-2 > a`
Fellows Program `div.container > div.center-block > div.col-md-2 > a`
Contact Us `div.container > div.center-block > div.col-md-2 > a`
Live Audio `div.col-md-2 > a > div > div`
oral argument `div#ctl00_MainEditable_RadEditToday > ul > li > a`
24 `tbody > tr.rcRow > td > a`
Calendar Info/Key `div.col-xs-12 > div.col-sm-6 > span > a`
Earlier Transcripts `div#ctl00_MainEditable_RadAjaxPanel1 > div.col-lg-7 > div#ctl00_MainEditable_pnlOralArguments > a#ctl00_MainEditable_HyperLink1`
Earlier Audio `div#ctl00_MainEditable_RadAjaxPanel1 > div.col-lg-7 > div#ctl00_MainEditable_pnlOralArguments > a#ctl00_MainEditable_HyperLink2`
District of Columbia v. R.W. (25-248) `div.col-lg-7 > div#opinionsbyday > div.casenamerow > span#ctl00_MainEditable_rptRecentDecisions_ctl01_rptRecentDecisionDay_ctl00_lblRecentCaseName`
Per Curiam `div.col-lg-7 > div#opinionsbyday > div.casenamerow > i`
Chevron USA Inc. v. Plaquemines Parish (24-813) `div.col-lg-7 > div#opinionsbyday > div.casenamerow > span#ctl00_MainEditable_rptRecentDecisions_ctl02_rptRecentDecisionDay_ctl00_lblRecentCaseName`
Chiles v. Salazar (24-539) `div.col-lg-7 > div#opinionsbyday > div.casenamerow > span#ctl00_MainEditable_rptRecentDecisions_ctl03_rptRecentDecisionDay_ctl00_lblRecentCaseName`
More Opinions... `div.container > div.col-lg-7 > span > a#ctl00_MainEditable_hypMoreOpinions`
Opinions of the Court `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink30`
Opinions Relating to Orders `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink31`
In-Chambers Opinions `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink32`
U. S. Reports `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink35`
Online Sources Cited in Opinions `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink37`
Media Files Cited in Opinions `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink36`
Case Citation Finder `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink34`
Electronic Filing `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink44f`
Rules and Guidance `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink3`
Supreme Court Bar `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink2`
Argument Transcripts `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink13`
Argument Audio `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink14`
Calendars and Lists `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink6`
Courtroom Seating `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink8`
Docket Search `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_hypdocket`
Orders of the Court `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_hypOrdersOfCourt`
Orders by Circuit `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink67`
Granted/Noted Cases List `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink68`
Journal `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink39`
Original Jurisdiction Records & Briefs `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HypOrigCasef`
Services for News Media `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperlinkServicesft`
Press Releases `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink57`
Media Advisories `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink58`
Press Credentials `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink61`
Speeches `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink59`
A Reporter's Guide to Applications (PDF) `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink62`
Chief Justice's Year-End Reports on the Federal Judiciary `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink60`
Justices `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink4`
Supreme Court at Work `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink10`
Code of Conduct for Justices `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink1`
History and Traditions `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink7`
The Supreme Court Building `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink49`
Building Regulations `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink50`
Frequently Asked Questions `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink45`
Hours & Directions `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_hypHoursDirection`
Prohibited Items `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_hypProhibitedItems`
Visitor Guidelines `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperGuidelines`
Accessibility `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HypAccessibility`
Maps & Guides `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HypMapsBrochures`
Courtroom Lectures `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_hypLectures`
Exhibitions `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink9`
Group Visits `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HypSchool`
Activities for Students & Families `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink11`
Café & Building Amenities `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HypBuildingAmenities`

These are opportunities to improve the legibility of your content.

Internationalization and localization

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html.t-chrome `html.t-chrome`

These are opportunities to improve the interpretation of your content by users in different locales.

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
div.col-sm-6 > div.legend > div#ctl00_MainEditable_pnlLegend > a#legendOpinion `div.col-sm-6 > div.legend > div#ctl00_MainEditable_pnlLegend > a#legendOpinion`
div.col-sm-6 > div.legend > div#ctl00_MainEditable_pnlLegend > a#legendconfOpinion `div.col-sm-6 > div.legend > div#ctl00_MainEditable_pnlLegend > a#legendconfOpinion`
div.col-sm-6 > div.legend > div#ctl00_MainEditable_pnlLegend > a#legendConfArg `div.col-sm-6 > div.legend > div#ctl00_MainEditable_pnlLegend > a#legendConfArg`

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

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
<< `tbody > tr > td > a#ctl00_MainEditable_Cal_FNP`
< `tbody > tr > td > a#ctl00_MainEditable_Cal_NP`
> `tbody > tr > td > a#ctl00_MainEditable_Cal_NN`
<< `tbody > tr > td > a#ctl00_MainEditable_Cal_FNN`
FILING & RULES `div.container > div.col-md-6 > div.col-sm-4 > a#ctl00_wucFooterNav_HyperLink69`
Electronic Filing `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink44f`
Rules and Guidance `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink3`
Supreme Court Bar `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink2`
Calendars and Lists `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink6`
Courtroom Seating `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink8`
Media Advisories `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink58`
Press Credentials `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink61`
ABOUT `div.container > div.col-md-6 > div.col-sm-4 > a#ctl00_wucFooterNav_hypAboutCourt`
Justices `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_Hyperlink4`
Prohibited Items `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_hypProhibitedItems`
Visitor Guidelines `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperGuidelines`
Exhibitions `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HyperLink9`
Group Visits `div.col-sm-4 > ul.footernavlist > li > a#ctl00_wucFooterNav_HypSchool`

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html.t-chrome `html.t-chrome`

These items highlight common accessibility best practices.

○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-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●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.

●Document has a `<title>` element

●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

●Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

●Heading elements appear in a sequentially-descending order

●Deprecated ARIA roles were not used

●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.

○`[accesskey]` values are unique

○`[aria-*]` attributes match their roles

○`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

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements use only permitted 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

○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

○`[aria-*]` attributes have valid values

○`[aria-*]` attributes are valid and not misspelled

○Buttons have an accessible name

○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 a valid value for its `[lang]` attribute

○`<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.

○No element has a `[tabindex]` value greater than 0

○`<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>`.

○Uses ARIA roles only on compatible elements

○Elements with visible text labels have matching accessible names.

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
Conference/Non-argument `a#legendSplit > div > span > img`	www.supremecourt.gov/images/calDate/day2.gif	20 x 20 (1.00)	20 x 15 (1.33)

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
Unload event listeners are deprecated and will be removed.	/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_R... line 5, col 57515

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.

URL	Map URL
/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_R...
www.supremecourt.gov/script/video.js
www.supremecourt.gov/js/bootstrap.min.js	www.supremecourt.gov/js/bootstrap.min.js.map

●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

●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

○Redirects HTTP traffic to HTTPS

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.

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
Search `div.row > div.text-right > div#searchboxheader > a`
##LOC[OK]## … `div#ctl00_MainEditable_RadWindowManager1_alerttemplate > div.rwDialogPopup > div > a.rwPopupButton`
##LOC[OK]## `div#ctl00_MainEditable_RadWindowManager1_prompttemplate > div.rwDialogPopup > div > a.rwPopupButton`
##LOC[Cancel]## `div#ctl00_MainEditable_RadWindowManager1_prompttemplate > div.rwDialogPopup > div > a.rwPopupButton`
##LOC[OK]## `div#ctl00_MainEditable_RadWindowManager1_confirmtemplate > div.rwDialogPopup > div > a.rwPopupButton`
##LOC[Cancel]## `div#ctl00_MainEditable_RadWindowManager1_confirmtemplate > div.rwDialogPopup > div > a.rwPopupButton`
div.lb-dataContainer > div.lb-data > div.lb-closeContainer > a.lb-close `div.lb-dataContainer > div.lb-data > div.lb-closeContainer > a.lb-close`

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

○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

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`