Skip to content
https://windows.com

Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

19

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
cdn.botframework.com/botframework-webchat/latest/webchat.js0.0 ms941.0 KiB
/is/image/microsoftcorp/MSFT_PhoneLink-4000x3000?scl=123706.0 s833.5 KiB
/is/image/microsoftcorp/MSFT-Woman-sitting-at-table-openi...6823.0 s550.7 KiB
/is/image/microsoftcorp/MSFT-Windows-11-PC-with-colorful-...23706.0 s589.7 KiB
/is/image/microsoftcorp/MSFT-PC-open-with-Start-menu-on-t...22197.0 s539.6 KiB
/is/image/microsoftcorp/MSFT-Windows-11-Search-bar?scl=120833.0 s505.4 KiB
www.microsoft.com/videoplayer/ump.mjs550.0 s349.0 KiB
/is/image/microsoftcorp/MSFT-PC-on-table-surrounded-by-pe...14415.0 s463.1 KiB
/is/image/microsoftcorp/MSFT-Windows-Search-bar-3000x4000...32566.0 s509.7 KiB
/is/image/microsoftcorp/MSFT-A-person-setting-a-PC-on-a-t...14415.0 s236.6 KiB
/5ef092d1efb5/e6b4ca74378c/launch-ENbb9d0de7cc374dc99259d...3600.0 s115.9 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.4 KiB
mem.gfx.ms/scripts/me/MeControl/10.25136.1/en-US/meBoot.min.js0.0 ms61.1 KiB
js.monitor.azure.com/scripts/c/ms.jsll-3.gbl.min.js1800.0 s61.9 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RC89111916c64f482...3600.0 s65.7 KiB
wcpstatic.microsoft.com/mscc/lib/v2/wcp-consent.js300.0 s52.3 KiB
/signals/config/1770559986549030?v=2.9.298&r=stable&domai...1200.0 s46.9 KiB
js.monitor.azure.com/scripts/c/ms.shared.analytics.mectrl-3.gbl.min.js1800.0 s34.9 KiB
scripts.clarity.ms/0.8.59/clarity.js0.0 ms26.1 KiB
mem.gfx.ms/scripts/me/MeControl/10.25136.1/en-US/meCore.min.js0.0 ms15.9 KiB
c.s-microsoft.com/static/fonts/segoe-ui/west-european/normal/latest.woff2172218.0 s33.5 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RC3556dd4adaaa482...3600.0 s11.4 KiB
c.s-microsoft.com/static/fonts/segoe-ui/west-european/Semibold/latest.woff2164767.0 s28.9 KiB
c.s-microsoft.com/static/fonts/segoe-ui/west-european/Bold/latest.woff2174630.0 s29.6 KiB
snap.licdn.com/li.lms-analytics/insight.min.js86400.0 s18.7 KiB
/is/image/microsoftcorp/MSFT-windows-copilot-device-MSW-C...20500.0 s8.2 KiB
mem.gfx.ms/meversion?partner=Windows&market=en-us&uhf=143200.0 s10.2 KiB
/is/image/microsoftcorp/MSFT-windows-2-in-1-device-MSW-C-...20501.0 s7.7 KiB
/is/image/microsoftcorp/MSFT-windows-desktop-device-MSW-C...11608.0 s7.1 KiB
/is/image/microsoftcorp/MSFT-windows-laptop-device-MSW-C-...14058.0 s6.9 KiB
/is/image/microsoftcorp/MSFT-windows-gaming-device-MSW-C-...24272.0 s7.3 KiB
uhf.microsoft.com/images/microsoft/RE1Mu3b.png0.0 ms4.2 KiB
/is/image/microsoftcorp/MSFT-Microsoft-sticky-logo-RE1Mu3...28974.0 s4.8 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RCba8d1187292348a...3600.0 s2.9 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RCd386d2b5cb714be...3600.0 s2.8 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RC1554f099e1b44f2...3600.0 s2.6 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RCe12fa42a1cd54d3...3600.0 s2.2 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RC6aa03a0b55c8489...3600.0 s2.1 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RCf1542dbbbb40493...3600.0 s2.0 KiB
/is/image/microsoftcorp/MSFT-X-icon-(formally-twitter-ico...9950.0 s2.2 KiB
/is/image/microsoftcorp/MSFT-system-logo?scl=1&fmt=png-alpha19623.0 s2.2 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RCe354f8942cc54f7...3600.0 s1.7 KiB
/is/image/microsoftcorp/MSFT-Acessibility-Illustrated-bub...22197.0 s1.7 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RCe85b6d0696b145e...3600.0 s1.3 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RCa8f9e499717e455...3600.0 s1.2 KiB
/is/image/microsoftcorp/MSFT-Security-badge-with-checkmar...16927.0 s1.4 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RC551ca69249b94ad...3600.0 s1.1 KiB
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RCc89630cdd8214b0...3600.0 s970 B
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RCcd133feaafaa410...3600.0 s901 B
/is/image/microsoftcorp/MSFT-Gaming-controller-icon?scl=1...28755.0 s1.1 KiB
/is/image/microsoftcorp/MSFT-Illustration-photo-with-moun...12756.0 s959 B
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RC24cc1e580ca14db...3600.0 s676 B
cdn-dynmedia-1.microsoft.com/is/image/microsoftcorp/facebook?scl=19915.0 s712 B
/is/image/microsoftcorp/MSFT-Vector?scl=1&fmt=png-alpha8509.0 s645 B
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RC9a18263c0ae9440...3600.0 s580 B
/5ef092d1efb5/e6b4ca74378c/150c8a1cfd96/RCa0289c120fdb433...3600.0 s575 B
/collect?v=2&fmt=js&pid=7850&time=1776358877317&li_adsId=...0.0 ms272 B
/tr/?id=1770559986549030&ev=ViewContent&dl=https%3A%2F%2F...0.0 ms19 B
/tr/?id=1770559986549030&ev=PageView&dl=https%3A%2F%2Fwww...0.0 ms16 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:0.436433] map[node:map[boundingRect:map[bottom:1281 height:830 left:0 right:1350 top:451 width:1350] lhId:page-9-DIV nodeLabel: 1 of 3 Explore Windows 11’s new features Explore Windows 11’s new features Me… path:1,HTML,1,BODY,2,MAIN,0,DIV,4,DIV selector:body > main#primaryArea > div#windowsh22 > div.main-multi snippet:<div data-grid="row" class="main-multi" data-bi-id="r5a3" data-bi-name="r5a3"> type:node] score:0.436161] map[node:map[boundingRect:map[bottom:54 height:54 left:314 right:1072 top:0 width:758] lhId:page-8-NAV nodeLabel:About Windows Get Windows Shop PCs Get help For business path:1,HTML,1,BODY,1,DIV,0,DIV,0,DIV,1,HEADER,0,DIV,0,DIV,6,NAV selector:header.c-uhfh > div.theme-light > div.c-uhfh-gcontainer-st > nav#uhf-g-nav snippet:<nav id="uhf-g-nav" aria-label="Contextual menu" class="c-uhfh-gnav" data-m="{&quot;cN&quot;:&quot;Category nav_cont&quot;,&quot;cT&quot;:&quot;Container&quot;,&quot;id&quot;:&quot;c8c2m1r1a1&quot;,&quot;sN&quot;:8,&quot;aN&quot;:&quot;…" style="overflow-x: visible;"> type:node] score:0.000149 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:37 height:23 left:78 right:186 top:14 width:108] lhId:page-15-IMG nodeLabel:div.theme-light > div.c-uhfh-gcontainer-st > a#uhfLogo > img.c-image path:1,HTML,1,BODY,1,DIV,0,DIV,0,DIV,1,HEADER,0,DIV,0,DIV,2,A,0,IMG selector:div.theme-light > div.c-uhfh-gcontainer-st > a#uhfLogo > img.c-image snippet:<img alt="" itemprop="logo" class="c-image" src="https://uhf.microsoft.com/images/microsoft/RE1Mu3b.png" role="presentation" aria-hidden="true" style="overflow-x: visible;"> type:node]] map[cause:Web font extra:map[type:url value:https://c.s-microsoft.com/static/fonts/segoe-ui/west-european/Semibold/latest.woff2]] map[cause:Web font extra:map[type:url value:https://c.s-microsoft.com/static/fonts/segoe-ui/west-european/normal/latest.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:54 height:54 left:1072 right:1283 top:0 width:211] lhId:page-14-DIV nodeLabel:All Microsoft Sign in to your account path:1,HTML,1,BODY,1,DIV,0,DIV,0,DIV,1,HEADER,0,DIV,0,DIV,7,DIV selector:header.c-uhfh > div.theme-light > div.c-uhfh-gcontainer-st > div.c-uhfh-actions snippet:<div class="c-uhfh-actions" data-m="{&quot;cN&quot;:&quot;Header actions_cont&quot;,&quot;cT&quot;:&quot;Container&quot;,&quot;id&quot;:&quot;c9c2m1r1a1&quot;,&quot;sN&quot;:9,&quot;aN&quot;…" style="overflow-x: visible;"> type:node] score:0.000123]]

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.

URLResource SizeEst Savings
Colorful PC and mobile device sitting on a desk with a cup of coffee and pen div.articletouts > section.m-content-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT_PhoneLink-4000x3000?scl=1832.7 KiB815.0 KiB
A Windows 11 PC with colorful bloom and Copilot icon on the screen div.articletouts > section.m-content-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-Windows-11-PC-with-colorful-...589.1 KiB576.5 KiB
Woman sitting at a table opening her PC div.articletouts > section.m-content-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-Woman-sitting-at-table-openi...550.1 KiB544.4 KiB
Windows Search bar div.articletouts > section.m-content-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-Windows-Search-bar-3000x4000...509.1 KiB503.8 KiB
PC open with Start menu on the screen div.carousal-slide > section.m-product-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-PC-open-with-Start-menu-on-t...539.0 KiB500.7 KiB
Windows 11 Search bar div.carousal-slide > section.m-product-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-Windows-11-Search-bar?scl=1504.8 KiB468.9 KiB
PC on a table, surrounded by personal items div.articletouts > section.m-content-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-PC-on-table-surrounded-by-pe...462.5 KiB457.7 KiB
A person setting a PC on a table div.carousal-slide > section.m-product-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-A-person-setting-a-PC-on-a-t...236.1 KiB219.3 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-5-IMG
nodeLabel: Windows 11 Search bar
path: 1,HTML,1,BODY,2,MAIN,0,DIV,4,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,SECTION,0,PICTURE,1,IMG
selector: div.carousal-slide > section.m-product-placement-item > picture > img.lazyloaded
snippet: <img class="lazyloaded c-image" alt="Windows 11 Search bar" src="https://cdn-dynmedia-1.microsoft.com/is/image/microsoftcorp/MSFT-Windows-1…" data-src="https://cdn-dynmedia-1.microsoft.com/is/image/microsoftcorp/MSFT-Windows-1…">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
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
wcpstatic.microsoft.com/mscc/lib/v2/wcp-consent.js52.3 KiB373 ms
www.microsoft.com/en-us/windows/win-con-files/scripts/ai.osplugin.3.min.js17.7 KiB
/en-us/windows/remote-resource-center/articles/scripts/Jq...39.1 KiB
/onerfstatics/marketingsites-neu-prod/west-european/shell...23.1 KiB
www.microsoft.com/en-us/windows/win-con-files/Content/westeuropeanmwfmainmin.css141.6 KiB210 ms
/en-us/windows/remote-resource-center/articles/Content/Gl...191.4 KiB294 ms

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
www.microsoft.com/mwf/_h/v3.54/mwf.app/fonts/mwfmdl2-v3.54.woff15 ms
c.s-microsoft.com/static/fonts/segoe-ui/west-european/Semibold/latest.woff25.0 ms
c.s-microsoft.com/static/fonts/segoe-ui/west-european/normal/latest.woff25.0 ms

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: 779 ms
URLTime Spent
windows.com/321 ms
windows.microsoft.com/206 ms
go.microsoft.com/fwlink/p/?linkid=532428210 ms
www.microsoft.com/windows42 ms
www.microsoft.com/en-us/windows/0.0 ms
www.microsoft.com/en-us/windows/?r=10.0 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
1 of 3 Explore Windows 11’s new features Explore Windows 11’s new features Me… body > main#primaryArea > div#windowsh22 > div.main-multi
0.436
About Windows Get Windows Shop PCs Get help For business header.c-uhfh > div.theme-light > div.c-uhfh-gcontainer-st > nav#uhf-g-nav
0.000
All Microsoft Sign in to your account header.c-uhfh > div.theme-light > div.c-uhfh-gcontainer-st > div.c-uhfh-actions
0.000

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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 40 ms 40.2 KiB
URLTransfer SizeEst Savings
/en-us/windows/remote-resource-center/articles/Content/Gl...191.4 KiB40.2 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 460 ms 367.8 KiB
URLTransfer SizeEst Savings
/en-us/windows/remote-resource-center/articles/Content/Gl...191.0 KiB184.3 KiB
www.microsoft.com/en-us/windows/win-con-files/Content/westeuropeanmwfmainmin.css141.1 KiB138.3 KiB
/onerfstatics/marketingsites-neu-prod/west-european/shell...22.3 KiB20.1 KiB
.mectrl_resetStyle,a.mectrl_resetStyle,button.mectrl_resetStyle{height:auto;min-width:auto; … } …15.2 KiB14.9 KiB
.mectrl_resetStyle,a.mectrl_resetStyle,button.mectrl_resetStyle{height:auto;min-width:auto; … } …10.3 KiB10.2 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: 1.0 s 1.1 MiB
URLTransfer SizeEst Savings
cdn.botframework.com/botframework-webchat/latest/webchat.js940.5 KiB534.9 KiB
www.microsoft.com/videoplayer/ump.mjs348.4 KiB277.8 KiB
/en-us/windows/remote-resource-center/articles/scripts/Gl...173.6 KiB92.9 KiB
www.microsoft.com/en-us/windows/win-con-files/scripts/mwfautoinitmainvarmin.js115.9 KiB86.8 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB36.0 KiB
wcpstatic.microsoft.com/mscc/lib/v2/wcp-consent.js51.5 KiB28.9 KiB
js.monitor.azure.com/scripts/c/ms.jsll-3.gbl.min.js61.0 KiB23.8 KiB
/onerfstatics/marketingsites-neu-prod/shell/_scrf/js/them...36.3 KiB21.6 KiB

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
Script Evaluation1.3 s
Other637 ms
Script Parsing & Compilation270 ms
Style & Layout158 ms
Parse HTML & CSS51 ms
Rendering32 ms
Garbage Collection26 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable
Pages with WebSocket cannot enter back/forward cache.Pending browser support

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 50.2 KiB
URLTransfer SizeEst Savings
/en-us/windows/remote-resource-center/articles/scripts/Gl...174.1 KiB50.2 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
cdn.botframework.com/botframework-webchat/latest/webchat.js941.0 KiB
/is/image/microsoftcorp/MSFT_PhoneLink-4000x3000?scl=1833.5 KiB
/is/image/microsoftcorp/MSFT-Windows-11-PC-with-colorful-...589.7 KiB
/is/image/microsoftcorp/MSFT-Woman-sitting-at-table-openi...550.7 KiB
/is/image/microsoftcorp/MSFT-PC-open-with-Start-menu-on-t...539.6 KiB
/is/image/microsoftcorp/MSFT-Windows-Search-bar-3000x4000...509.7 KiB
/is/image/microsoftcorp/MSFT-Windows-11-Search-bar?scl=1505.4 KiB
/is/image/microsoftcorp/MSFT-PC-on-table-surrounded-by-pe...463.1 KiB
www.microsoft.com/videoplayer/ump.mjs349.0 KiB
/windowsoffers/ActiveOffers.json302.6 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
A Windows 11 PC with colorful bloom and Copilot icon on the screen div.articletouts > section.m-content-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-Windows-11-PC-with-colorful-...
Colorful PC and mobile device sitting on a desk with a cup of coffee and pen div.articletouts > section.m-content-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT_PhoneLink-4000x3000?scl=1
Woman sitting at a table opening her PC div.articletouts > section.m-content-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-Woman-sitting-at-table-openi...
PC on a table, surrounded by personal items div.articletouts > section.m-content-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-PC-on-table-surrounded-by-pe...
Windows Search bar div.articletouts > section.m-content-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-Windows-Search-bar-3000x4000...
Open Microsoft laptop with the rainbow bloom on the screen on a light blue grad… li > a.c-hyperlink > picture > img
/is/image/microsoftcorp/MSFT-windows-copilot-device-MSW-C...
Open Microsoft laptop on a white table with the blue bloom on the screen li > a.c-hyperlink > picture > img
/is/image/microsoftcorp/MSFT-windows-laptop-device-MSW-C-...
Microsoft desktop with the blue bloom on the screen sitting on a white table li > a.c-hyperlink > picture > img
/is/image/microsoftcorp/MSFT-windows-desktop-device-MSW-C...
Open Microsoft laptop with the blue bloom on a dark mode screen sitting on a gr… li > a.c-hyperlink > picture > img
/is/image/microsoftcorp/MSFT-windows-gaming-device-MSW-C-...
Microsoft device with the blue bloom on the screen sitting on a white table li > a.c-hyperlink > picture > img
/is/image/microsoftcorp/MSFT-windows-2-in-1-device-MSW-C-...
X icon (formally twitter icon) ul > li.social-linked-icon > a > img
/is/image/microsoftcorp/MSFT-X-icon-(formally-twitter-ico...
X icon (formally twitter icon) ul > li.social-linked-icon > a > img
/is/image/microsoftcorp/MSFT-X-icon-(formally-twitter-ico...
div.theme-light > div.c-uhfh-gcontainer-st > a#uhfLogo > img.c-image div.theme-light > div.c-uhfh-gcontainer-st > a#uhfLogo > img.c-image
uhf.microsoft.com/images/microsoft/RE1Mu3b.png
Security badge with a checkmark section.m-content-placement-item > div.m-left-item > picture.c-image > img.lazyloaded
/is/image/microsoftcorp/MSFT-Security-badge-with-checkmar...
Illustrated bubble person with a checkmark next to it section.m-content-placement-item > div.m-left-item > picture.c-image > img.lazyloaded
/is/image/microsoftcorp/MSFT-Acessibility-Illustrated-bub...
Gaming controller section.m-content-placement-item > div.m-left-item > picture.c-image > img.lazyloaded
/is/image/microsoftcorp/MSFT-Gaming-controller-icon?scl=1...
Illustration of a photo with mountains section.m-content-placement-item > div.m-left-item > picture.c-image > img.lazyloaded
/is/image/microsoftcorp/MSFT-Illustration-photo-with-moun...
Facebook icon ul > li.social-linked-icon > a > img
cdn-dynmedia-1.microsoft.com/is/image/microsoftcorp/facebook?scl=1
Facebook icon ul > li.social-linked-icon > a > img
cdn-dynmedia-1.microsoft.com/is/image/microsoftcorp/facebook?scl=1

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
●JavaScript execution time 1.2 s
●Avoid long main-thread tasks 3 long tasks found
●Network Requests
●Network Round Trip Times 70 ms
●Server Backend Latencies 280 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 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.

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
View Copilot+ PCs nav.c-link-navigation > ul > li > a.c-hyperlink
View laptops nav.c-link-navigation > ul > li > a.c-hyperlink
View desktop computers nav.c-link-navigation > ul > li > a.c-hyperlink
View gaming PCs nav.c-link-navigation > ul > li > a.c-hyperlink
View 2-in-1s nav.c-link-navigation > ul > li > a.c-hyperlink
○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
●`[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 are distinguishable without relying on color.
●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
●Document has a main landmark.
●Deprecated ARIA roles were not used
○`[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
○Form elements have associated labels
○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.
○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.
77

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.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
Windows 11 Search bar div.carousal-slide > section.m-product-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-Windows-11-Search-bar?scl=11094 x 520 (2.10)4000 x 2000 (2.00)
PC open with Start menu on the screen div.carousal-slide > section.m-product-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-PC-open-with-Start-menu-on-t...1094 x 520 (2.10)4000 x 2000 (2.00)
A person setting a PC on a table div.carousal-slide > section.m-product-placement-item > picture > img.lazyloaded
/is/image/microsoftcorp/MSFT-A-person-setting-a-PC-on-a-t...1094 x 520 (2.10)4000 x 2000 (2.00)

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Unload event listeners are deprecated and will be removed.
/en-us/windows/remote-resource-center/articles/scripts/Jq...
AttributionReporting
snap.licdn.com/li.lms-analytics/insight.min.js
Specifying overflow: visible on img, video and canvas tags may cause them to produce visual content outside of the element bounds. See https://github.com/WICG/shared-element-transitions/blob/main/debugging_overflow_on_images.md.
/onerfstatics/marketingsites-neu-prod/shell/_scrf/js/them... line 4, col 11496

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.microsoft.com/videoplayer/ump.mjs
/en-us/windows/remote-resource-center/articles/scripts/Gl...
mem.gfx.ms/meversion?partner=Windows&market=en-us&uhf=1mem.gfx.ms/meInlineBackCompat.min.js.map
mem.gfx.ms/scripts/me/MeControl/10.25136.1/en-US/meCore.min.jsmem.gfx.ms/scripts/me/MeControl/10.25136.1/en-US/meCore.min.js.map
mem.gfx.ms/scripts/me/MeControl/10.25136.1/en-US/meBoot.min.jsmem.gfx.ms/scripts/me/MeControl/10.25136.1/en-US/meBoot.min.js.map
js.monitor.azure.com/scripts/c/ms.shared.analytics.mectrl-3.gbl.min.jsjs.monitor.azure.com/scripts/c/ms.shared.analytics.mectrl-3.2.18.gbl.min.js.map
js.monitor.azure.com/scripts/c/ms.jsll-3.gbl.min.jsjs.monitor.azure.com/scripts/c/ms.jsll-3.2.18.gbl.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
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.

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 destinationLink Text
www.microsoft.com/en-us/windows/windows-11Learn more
www.microsoft.com/en-us/windows/copilot-plus-pcsLearn more
www.microsoft.com/en-us/windows/sync-across-your-devicesLearn more
www.microsoft.com/en-us/windows/comprehensive-securityLearn more
www.microsoft.com/en-us/windows/accessibility-featuresLearn more
www.microsoft.com/en-us/windows/windows-11-pc-gamingLearn more
www.microsoft.com/en-us/windows/photo-movie-editorLearn more
www.microsoft.com/en-us/windows/laptop-buying-guideLearn more
www.microsoft.com/en-us/windows/transfer-your-data-with-windows-backupLearn more
support.microsoft.com/windowsLearn more

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
Skip to main content div#headerArea > div#headerRegion > div#headerUniversalHeader > a#uhfSkipToMain
1 div > ul > li.c-caption-2 > a#1
2 div > ul > li.c-caption-2 > a#2
3 div > ul > li.c-caption-2 > a#3
4 div > ul > li.c-caption-2 > a#4

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
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

Send Feedback