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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.

62

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
www.st.com/L9Of/H6I-/ps/5urg/nvMA/3zYDkS2rSf4VJSz5/aioOJQUXBw/dAVoB/lk-JTUB21600.0 s183.0 KiB
www.st.com/etc/clientlibs/st-site-cx.min.3102257c92a26417796eec1cc4af6c93.js537919.0 s525.5 KiB
search.st.com/widgets/searchbox/index.js71397.0 s141.7 KiB
/etc/clientlibs/st-site-cx/components/font-awesome/media/...405492.0 s79.1 KiB
/etc/designs/st-search-cx/search.min.446389ae6cfe152dcc0c...545230.0 s99.2 KiB
www.st.com/akam/13/7275423821600.0 s12.8 KiB
/etc/clientlibs/st-search-cx/stangularjs.min.901dd2b30b4f...545230.0 s66.1 KiB
s2.go-mpulse.net/boomerang/VQ4BN-JKJ9P-N5ULX-3L5VG-3UADM604800.0 s58.4 KiB
www.st.com/etc/clientlibs/st-crew.min.5f656be71d1f8ed511370bd0611fb4fd.css538427.0 s46.3 KiB
assets.st.com/s7viewers/html5/js/VideoViewer.js29670.0 s9.2 KiB
/etc/clientlibs/st-site-cx/components/home-only-fonts/med...602746.0 s48.4 KiB
/etc.clientlibs/clientlibs/granite/jquery.min.3e24d4d067a...545229.0 s39.1 KiB
/etc/clientlibs/st-site/libs/dataTables.min.15d1ef4b86c76...545229.0 s32.6 KiB
/etc/clientlibs/st-site-cx/components/home-only-fonts/med...465572.0 s23.3 KiB
www.st.com/content/dam/st-crew/st-logo-blue.svg17659.0 s4.6 KiB
/etc/clientlibs/st-crew-header-footer.min.647d68e359d237e...545229.0 s25.9 KiB
www.st.com/etc/clientlibs/st-crew.min.d4ffb17731a0fd996f1412c81e7817e0.js538427.0 s19.9 KiB
www.st.com/astatic/wv/web-vitals.es5.umd.min.js206221.0 s5.4 KiB
/etc/clientlibs/st-site-cx/components/header.min.0a833099...540337.0 s11.6 KiB
/etc.clientlibs/foundation/clientlibs/shared.min.5bb9fccf...545229.0 s10.9 KiB
/etc/clientlibs/st-site-cx/components/font-awesome.min.8a...545230.0 s10.9 KiB
/etc/designs/st-search-cx/search.min.721107fd235b8929aa6d...545229.0 s10.8 KiB
munchkin.marketo.net/munchkin.js0.0 ms1.2 KiB
www.st.com/etc/clientlibs/st-marketo.min.f7702dd63add579f6f4a0b7c468d17e0.js542487.0 s10.1 KiB
www.st.com/etc/clientlibs/modernizr.min.0f6542a649b0362c1b05d1a65003f321.js545230.0 s8.7 KiB
www.st.com/astatic/onetrust/st/OneTrust.min.js463045.0 s6.9 KiB
/etc/clientlibs/st-search-cx/bookmarks.min.7d3207878d9b2a...547402.0 s8.0 KiB
/etc/clientlibs/st-site-cx/components/st-browser-update.m...545230.0 s7.8 KiB
/etc/clientlibs/st-site-cx/components/st-app-head.min.a0b...545230.0 s7.4 KiB
/etc.clientlibs/clientlibs/granite/utils.min.3b86602c4e1e...545229.0 s7.1 KiB
www.st.com/etc/clientlibs/st-site-cx/js/st-utils.js545229.0 s6.8 KiB
search.st.com/widgets/searchbox/index.css74531.0 s1.9 KiB
www.st.com/etc/clientlibs/st-site/js/url-search-params-polyfill.js545230.0 s5.8 KiB
/etc.clientlibs/st-crew/components/editorial/newsUpdates/...545901.0 s5.4 KiB
/etc.clientlibs/clientlibs/granite/jquery/granite.min.011...545229.0 s5.4 KiB
/etc.clientlibs/st-crew/components/editorial/hp-video-tou...546151.0 s5.3 KiB
/etc/clientlibs/st-site-cx/components/footer.min.1be59732...545267.0 s5.2 KiB
/etc.clientlibs/st-site-cx/components/general/navigation/...545267.0 s5.2 KiB
/etc.clientlibs/st-site-cx/components/general/navigation/...537951.0 s5.1 KiB
/etc.clientlibs/st-crew/components/editorial/sustainabili...545901.0 s5.0 KiB
/etc.clientlibs/st-crew/components/editorial/banner/banne...545901.0 s5.0 KiB
/etc/clientlibs/st-search-cx/searchHistory.min.77ac21fb73...545230.0 s5.0 KiB
/etc/clientlibs/st-crew-homepage.min.016982f31108b5da6ec6...545901.0 s5.0 KiB
/etc.clientlibs/st-crew/components/dialogs/crew-video/cre...548246.0 s5.0 KiB
/etc.clientlibs/st-crew/components/editorial/newsUpdates/...545901.0 s4.8 KiB
/etc.clientlibs/st-site-cx/components/general/header/clie...545267.0 s4.8 KiB
/etc.clientlibs/st-site-cx/components/general/header/sub-...539883.0 s4.7 KiB
/etc.clientlibs/st-site-cx/components/general/footer/clie...540875.0 s4.6 KiB
/etc.clientlibs/st-site-cx/components/general/header/sub-...587278.0 s5.1 KiB
/etc/clientlibs/st-search-cx/stcrossreference.min.006481f...545230.0 s4.5 KiB
/etc.clientlibs/st-crew/clientlibs/pop-up-cta.min.c271391...545328.0 s4.5 KiB
/etc/clientlibs/st-site-cx/components/save-to-my-st.min.5...545267.0 s4.4 KiB
/etc/clientlibs/st-search-cx/bookmarks.min.7022ac2d1d228a...545230.0 s4.4 KiB
/etc.clientlibs/st-site-cx/components/general/footer/foot...539906.0 s4.3 KiB
/etc.clientlibs/st-site-cx/components/general/header/clie...539883.0 s4.3 KiB
/etc/clientlibs/custom-activities.min.fc64bc2793ee75d95fa...545267.0 s4.3 KiB
/etc.clientlibs/st-crew/components/editorial/hp-video-tou...546020.0 s4.3 KiB
/etc/clientlibs/st-site-cx/components/info-modal.min.0f48...545267.0 s4.3 KiB
/etc.clientlibs/st-crew/components/editorial/banner/banne...545901.0 s4.3 KiB
/etc.clientlibs/st-crew/components/editorial/sustainabili...545901.0 s4.2 KiB
www.st.com/etc/clientlibs/st-site/js/custom-event-polyfill.js545230.0 s4.2 KiB
/etc.clientlibs/st-crew/components/dialogs/crew-video/cre...545476.0 s4.2 KiB
/etc.clientlibs/st-crew/clientlibs/pop-up-cta.min.5e2ab08...545446.0 s4.1 KiB
/etc/clientlibs/st-site/components/cookiePanel.min.0fb1f0...545267.0 s4.1 KiB
/etc/clientlibs/st-site-cx/components/st-app-head-utils.m...545267.0 s4.0 KiB
www.st.com/etc/clientlibs/service-worker.min.0a46a8c8ffff5114275d30b23c4a9ac6.js545267.0 s4.0 KiB
/etc.clientlibs/foundation/clientlibs/jquery.min.dd9b395c...545229.0 s3.8 KiB
/etc/clientlibs/st-crew-homepage.min.d41d8cd98f00b204e980...545901.0 s3.8 KiB

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.

URLEst Savings
/etc/clientlibs/st-site-cx/components/font-awesome/media/...30 ms

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:96.218 source:map[type:text value:[unattributed]]] map[reflowTime:1.821 source:map[column:58 line:149 type:source-location url:https://www.st.com/etc.clientlibs/clientlibs/granite/jquery.min.3e24d4d067ac58228b5004abb50344ef.js urlProvider:network]] map[reflowTime:0.55 source:map[column:84 line:145 type:source-location url:https://www.st.com/etc.clientlibs/clientlibs/granite/jquery.min.3e24d4d067ac58228b5004abb50344ef.js urlProvider:network]] map[reflowTime:0.246 source:map[column:213 line:145 type:source-location url:https://www.st.com/etc.clientlibs/clientlibs/granite/jquery.min.3e24d4d067ac58228b5004abb50344ef.js urlProvider:network]] map[reflowTime:0.099 source:map[column:4 line:146 type:source-location url:https://www.st.com/etc.clientlibs/clientlibs/granite/jquery.min.3e24d4d067ac58228b5004abb50344ef.js urlProvider:network]] map[reflowTime:0.073 source:map[column:68 line:146 type:source-location url:https://www.st.com/etc.clientlibs/clientlibs/granite/jquery.min.3e24d4d067ac58228b5004abb50344ef.js urlProvider:network]] map[reflowTime:0.884 source:map[column:372 line:146 type:source-location url:https://www.st.com/etc.clientlibs/clientlibs/granite/jquery.min.3e24d4d067ac58228b5004abb50344ef.js urlProvider:network]] map[reflowTime:0.246 source:map[column:444 line:146 type:source-location url:https://www.st.com/etc.clientlibs/clientlibs/granite/jquery.min.3e24d4d067ac58228b5004abb50344ef.js 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#CREW: HP top corporate tile > div.hp-top-banner-container > div.hp-top-banner-imageTextAndCTA > img.image-darker-45 div#CREW: HP top corporate tile > div.hp-top-banner-container > div.hp-top-banner-imageTextAndCTA > img.image-darker-45
/content/dam/0hp/2026-04/top-banner/9831967_Homepage bann...83.9 KiB42.3 KiB
div.aem-Grid > div.slideShow > div.slideshow > img.background div.aem-Grid > div.slideShow > div.slideshow > img.background
www.st.com/content/dam/crew/solar-panel-blue-sky.jpg241.1 KiB8.2 KiB
div.aem-Grid > div.slideShow > div.slideshow > img.background div.aem-Grid > div.slideShow > div.slideshow > img.background
www.st.com/content/dam/crew/smart-city-night-buildings.jpg240.9 KiB8.0 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: div#CREW: HP top corporate tile > div.hp-top-banner-container > div.hp-top-banner-imageTextAndCTA > img.image-darker-45
path: 6,HTML,2,BODY,6,DIV,1,DIV,7,MAIN,4,DIV,0,DIV,0,DIV,0,DIV,0,DIV,2,DIV,0,DIV,4,DIV,0,IMG
selector: div#CREW: HP top corporate tile > div.hp-top-banner-container > div.hp-top-banner-imageTextAndCTA > img.image-darker-45
snippet: <img class="image-darker-45" src="/content/dam/0hp/2026-04/top-banner/9831967_Homepage%20banner%20for%20ST%2…" alt="">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
/etc.clientlibs/st-site-cx/components/general/header/sub-...5.1 KiB
/etc.clientlibs/st-site-cx/components/general/header/clie...4.8 KiB
/etc/clientlibs/st-site-cx/components/st-app-head-utils.m...4.0 KiB
www.st.com/etc/clientlibs/st-site-cx/js/st-utils.js6.8 KiB
/etc.clientlibs/foundation/clientlibs/shared.min.5bb9fccf...10.9 KiB
www.st.com/astatic/onetrust/st/OneTrust.min.js6.9 KiB
/etc.clientlibs/foundation/clientlibs/jquery.min.dd9b395c...3.8 KiB
/etc.clientlibs/clientlibs/granite/jquery/granite.min.011...5.4 KiB
/etc.clientlibs/clientlibs/granite/utils.min.3b86602c4e1e...7.1 KiB
/etc.clientlibs/clientlibs/granite/jquery.min.3e24d4d067a...39.1 KiB82 ms
www.st.com/etc/clientlibs/st-crew.min.5f656be71d1f8ed511370bd0611fb4fd.css46.3 KiB82 ms
/etc/clientlibs/st-site-cx/components/header.min.0a833099...11.6 KiB
/etc.clientlibs/st-site-cx/components/general/header/sub-...4.7 KiB
/etc.clientlibs/st-site-cx/components/general/header/clie...4.3 KiB
/etc/designs/st-search-cx/search.min.721107fd235b8929aa6d...10.8 KiB
/etc/clientlibs/st-crew-header-footer.min.647d68e359d237e...25.9 KiB

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: 1.9 s
URLTime Spent
st.com/1.6 s
www.st.com/305 ms
www.st.com/content/st_com/en.html0.0 ms

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: 120 ms 60.1 KiB
URLTransfer SizeEst Savings
www.st.com/etc/clientlibs/st-crew.min.5f656be71d1f8ed511370bd0611fb4fd.css42.5 KiB40.1 KiB
/etc/clientlibs/st-crew-header-footer.min.647d68e359d237e...22.1 KiB20.0 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: 160 ms 794.0 KiB
URLTransfer SizeEst Savings
www.st.com/etc/clientlibs/st-site-cx.min.3102257c92a26417796eec1cc4af6c93.js521.6 KiB344.0 KiB
/etc/designs/st-search-cx/search.min.446389ae6cfe152dcc0c...95.4 KiB77.9 KiB
www.googletagmanager.com/gtag/js?id=G-4V6BSG3B5Y&cx=c&gtm=4e64h1177.8 KiB66.5 KiB
www.googletagmanager.com/gtag/js?id=AW-965727604&cx=c&gtm=4e64h1146.6 KiB64.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-NMB29WK167.0 KiB58.9 KiB
search.st.com/widgets/searchbox/index.js140.3 KiB55.3 KiB
/etc/clientlibs/st-search-cx/stangularjs.min.901dd2b30b4f...62.3 KiB41.7 KiB
www.st.com/L9Of/H6I-/ps/5urg/nvMA/3zYDkS2rSf4VJSz5/aioOJQUXBw/dAVoB/lk-JTUB178.6 KiB37.7 KiB
s2.go-mpulse.net/boomerang/VQ4BN-JKJ9P-N5ULX-3L5VG-3UADM58.3 KiB25.1 KiB
/etc/clientlibs/st-site/libs/dataTables.min.15d1ef4b86c76...28.8 KiB22.8 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 reasonFailure type
Internal error.Not 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 217.0 KiB
URLTransfer SizeEst Savings
www.st.com/etc/clientlibs/st-site-cx.min.3102257c92a26417796eec1cc4af6c93.js521.7 KiB217.0 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.

URLTransfer Size
www.st.com/etc/clientlibs/st-site-cx.min.3102257c92a26417796eec1cc4af6c93.js525.5 KiB
www.st.com/content/dam/crew/solar-panel-blue-sky.jpg245.4 KiB
www.st.com/content/dam/crew/smart-city-night-buildings.jpg245.1 KiB
www.st.com/L9Of/H6I-/ps/5urg/nvMA/3zYDkS2rSf4VJSz5/aioOJQUXBw/dAVoB/lk-JTUB183.0 KiB
www.googletagmanager.com/gtag/js?id=G-4V6BSG3B5Y&cx=c&gtm=4e64h1177.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-NMB29WK167.3 KiB
www.googletagmanager.com/gtag/js?id=AW-965727604&cx=c&gtm=4e64h1146.7 KiB
search.st.com/widgets/searchbox/index.js141.7 KiB
www.st.com/content/dam/crew/drone-takeoff-building.jpg104.3 KiB
/etc/designs/st-search-cx/search.min.446389ae6cfe152dcc0c...99.2 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
event-tile-1-en div.crew-cards-outer-container > a.white-on-focus > div.crew-events-card-container > img.background
/content/dam/0hp/2026-04/upcoming-event/desktop-motor-con...
event-tile-2-en div.crew-cards-outer-container > a.white-on-focus > div.crew-events-card-container > img.background
www.st.com/content/dam/0hp/2026-04/upcoming-event/wireless-design-desktop.jpg
event-tile-3-en div.crew-cards-outer-container > a.white-on-focus > div.crew-events-card-container > img.background
/content/dam/0hp/2026-04/upcoming-event/upcoming-event-ti...
STMicroelectronics Logo div.row > div.st-footer-logo-wrap > a > img
www.st.com/content/dam/st-crew/st-logo-blue.svg

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

●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 8 user timings
●JavaScript execution time 0.9 s
●Minimizes main-thread work 1.6 s
●Avoid long main-thread tasks 5 long tasks found
●Network Requests
●Network Round Trip Times 50 ms
●Server Backend Latencies 1,260 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 50 ms
○INP breakdown
○Avoid non-composited animations
○Avoid large layout shifts
89

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.

ARIA

Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid values. Learn more about valid values for ARIA attributes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Power & Energy div.col-lg-3 > div.side-bar > div.tabs > button.tab

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

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
div.MuiAutocomplete-root > div.MuiFormControl-root > div.MuiInputBase-root > input#queryText div.MuiAutocomplete-root > div.MuiFormControl-root > div.MuiInputBase-root > input#queryText

These are opportunities to improve the legibility of your content.

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 div.inner-wrap > header#Top_Menu > div.header-accessibilityCta > a.js-focus-accessibilityCta

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
Peak power efficiency Achieve maximum conversion efficiency with our 3A synchr… div.col-lg-8 > div#CREW:Product_and_Innovations:Power & Energy > div.cards > a.card
1200 V SCR: no potting TO247HC geometry eliminates potting up to 470 Vrms. 6.7… div.col-lg-8 > div#CREW:Product_and_Innovations:Power & Energy > div.cards > a.card
Contact ST offices nav > ul.st-footer__nav > li > a
Find sales offices & distributors nav > ul.st-footer__nav > li > a
○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 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
●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
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●ARIA IDs are unique
●Identical links have the same purpose.
○`[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
○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.
○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.
77

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
Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.
/etc.clientlibs/clientlibs/granite/jquery/granite.min.011... line 5, col 382

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
www.st.com/etc/clientlibs/st-site-cx.min.3102257c92a26417796eec1cc4af6c93.js line 46314, col 24
Marketo lead association: munchkin cookie has not been initialized.
www.st.com/content/st_com/en.html line 352, col 66
TypeError: Cannot read properties of undefined (reading 'includes') at HTMLSpanElement.<anonymous> (https://www.st.com/content/st_com/en.html:353:67) at c.each (https://www.st.com/etc.clientlibs/clientlibs/granite/jquery.min.3e24d4d067ac58228b5004abb50344ef.js:50:175) at c.fn.init.each (https://www.st.com/etc.clientlibs/clientlibs/granite/jquery.min.3e24d4d067ac58228b5004abb50344ef.js:46:132) at HTMLDocument.<anonymous> (https://www.st.com/content/st_com/en.html:352:31)

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.

URLMap URL
www.st.com/L9Of/H6I-/ps/5urg/nvMA/3zYDkS2rSf4VJSz5/aioOJQUXBw/dAVoB/lk-JTUB
www.st.com/etc/clientlibs/st-site-cx.min.3102257c92a26417796eec1cc4af6c93.jswww.st.com/etc/clientlibs/simplebar.umd.es5.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
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●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
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
85

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
MCU Developer Zone div > ul.font-lubalin > li#mcu-not-expanded > a
MPU Developer Zone div > ul.font-lubalin > li#mpu-not-expanded > a
ST Edge AI Suite div > ul.font-lubalin > li#edge-ai-not-expanded > a
{{level_1.browseAllBtnText}} div.st-nav__submenu-container > div.st-nav__submenu-list-container > div.browse-all-button > a.st-button
{{level_2.title}} div.st-nav__submenu-list-container > ul > li.st-nav__submenu-item > a.st-nav__submenu-link
{{level_2.title}} div.st-nav__submenu-list-container > ul > li.st-nav__submenu-item > a.st-nav__submenu-link
Browse {{level_2.title}} div.st-nav__submenu-list-container > div.st-nav__subsubmenu > div.st-nav__subsubmenu-header > a.st-nav__subsubmenu-link
{{level_3.title}} div.st-nav__subsubmenu-grid > div.st-nav__subsubmenu-item > div.st-nav__blockmenu > a.st-nav__blockmenu-title
{{level_4.title}} div.st-nav__blockmenu > ul.st-nav__blockmenu-list > li.st-nav__blockmenu-item > a.st-nav__blockmenu-link
Find your next adventure div.modal-content > div.stc-legalrecruiting-textcontent > div.stc-legalrecruiting-link-wrap > a

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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