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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.

58

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.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js0.0 ms1.1 MiB
www.xfinity.com/national/xfinity-learn-ui/main.33759f7d28357b0b34a4.js0.0 ms297.3 KiB
cdn.cookielaw.org/consent/a55e6907-e160-4758-bc91-65f5b89f37b3/OtAutoBlock.js86400.0 s674.4 KiB
cdn.quantummetric.com/qscripts/quantum-comcast.js300.0 s230.2 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...21600.0 s171.1 KiB
assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js3600.0 s122.1 KiB
www.xfinity.com/national/xfinity-learn-ui/6067.920ddd5b3a21c6b290c2.css0.0 ms76.6 KiB
cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js86400.0 s129.9 KiB
polaris.xfinity.com/globalnav/polaris.js300.0 s34.1 KiB
assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js28594.0 s39.4 KiB
www.xfinity.com/national/xfinity-learn-ui/main.920ddd5b3a21c6b290c2.css0.0 ms20.7 KiB
static.cimcontent.net/data-layer/?appID=resi_shop_23600.0 s25.8 KiB
js.pulseinsights.com/surveys.js86400.0 s50.1 KiB
tag.bounceexchange.com/1369/i.js60.0 s20.2 KiB
www.mczbf.com/tags/11041/tag.js1800.0 s13.5 KiB
c.amazon-adsystem.com/aat/amzn.js0.0 ms8.9 KiB
/assets/dotcom/adrum/adrum-ext.cf5592562c45abb4a2ba007119...44056.0 s17.9 KiB
cdn.cookielaw.org/logos/static/ot_company_logo.png86400.0 s19.1 KiB
www.xfinity.com/akam/13/6e174fdb21600.0 s9.4 KiB
static.hotjar.com/c/hotjar-0.js?sv=060.0 s5.7 KiB
assets.xfinity.com/assets/dotcom/lzchat/xfinity_lzchat.js70250.0 s11.8 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js86400.0 s9.1 KiB
www.xfinity.com/national/xfinity-learn-ui/runtime.60269ad5a97ae675531f.js0.0 ms3.3 KiB
assets.comcast.com/assets/common/fonts/dm-sans/dmsans-regular.woff21033684.0 s29.7 KiB
assets.comcast.com/assets/common/fonts/x-sans/xsans_w_sbd.woff2940464.0 s17.0 KiB
assets.comcast.com/assets/common/fonts/x-sans/xsans_w_bd.woff21634960.0 s17.0 KiB
xchat.xfinity.com/tagserver/js/ads-blocking-detector.min.js3600.0 s2.0 KiB
s.pinimg.com/ct/core.js7200.0 s2.1 KiB
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC4a77402c3d9b425...3600.0 s1.8 KiB
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC68156b5be9d44a3...3600.0 s1.6 KiB
/sync?c=16b6410431b6374e780104abb0443ca8&p=235b722ede29c3...0.0 ms1.2 KiB
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC3aee30283a73468...3600.0 s1.4 KiB
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC5af57af6e0604be...3600.0 s1.4 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.5 KiB
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCa277acaa74f74db...3600.0 s1.2 KiB
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCc68d27897a2b4d4...3600.0 s1.1 KiB
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC7e73fe1ea4634dc...3600.0 s1.1 KiB
/assets/dotcom/projects_3/2026/feb/cix-9557_2-23-disney-d...522682.0 s6.7 KiB
/config/com/4c367ec5-94d5-4a20-92d3-470c2788b655.js?v=3.5...0.0 ms812 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC42357208478b480...3600.0 s926 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC94e2ad48a7814aa...3600.0 s881 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC3a1bdae468b741b...3600.0 s822 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCfdc3d33d0371449...3600.0 s812 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCfd97c8de82c64b9...3600.0 s811 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC34c7dcc5f1464eb...3600.0 s806 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC9bf48c62e2ca4d0...3600.0 s775 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC3317213b5aca4ad...3600.0 s754 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCad306c4e8e634b8...3600.0 s744 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC568155bdae6a4e7...3600.0 s735 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCa39e519a632f49d...3600.0 s726 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC230515b9a450475...3600.0 s717 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC0041185b0b35409...3600.0 s717 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC7a3c7cc6ad444ad...3600.0 s701 B
www.xfinity.com/akam/13/6e174fdb21600.0 s826 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCe2bf85549c404e8...3600.0 s647 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC16a17cf232a5456...3600.0 s644 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC59d770dcd38f4b8...3600.0 s627 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC497573842579422...3600.0 s601 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC903fc1375d094fd...3600.0 s561 B
/serve?udid=c3854bbd-60f4-489a-ae18-f03294c27f54&device_t...0.0 ms391 B
cdn.cookielaw.org/logos/static/ot_close.svg86400.0 s634 B
/assets/dotcom/xds-icons/outbound_calls/ic_outbound_calls...1962614.0 s1.2 KiB
/tr?id=3570459783026493&ev=PageView&cd[order_id]=70105983...0.0 ms18 B
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...21600.0 s0 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.

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:13.39 source:map[column:23284 line:7 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:32.034 source:map[type:text value:[unattributed]]] map[reflowTime:0.264 source:map[column:16648 line:9 type:source-location url:https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js urlProvider:network]] map[reflowTime:3.793 source:map[column:15334 line:5 type:source-location url:https://www.xfinity.com/va/static/xaui-widget-v2/assets/widget.js urlProvider:network]] map[reflowTime:0.557 source:map[column:23712 line:1095 type:source-location url:https://cdn.quantummetric.com/qscripts/quantum-comcast.js urlProvider:network]] map[reflowTime:7.062 source:map[column:303154 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js urlProvider:network]] map[reflowTime:0.537 source:map[column:303498 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js urlProvider:network]] map[reflowTime:5.791 source:map[column:357854 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js urlProvider:network]] map[reflowTime:0.412 source:map[column:91 line:234 type:source-location url:https://cdn.quantummetric.com/qscripts/quantum-comcast.js urlProvider:network]] map[reflowTime:1.478 source:map[column:172682 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js urlProvider:network]] map[reflowTime:1.249 source:map[column:44784 line:0 type:source-location url:https://www.xfinity.com/learn/mobile/plan/savings-calculator/chunk-YUVF67YJ.js urlProvider:network]]]

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-DIV
nodeLabel: main.undefined > div.text-neutral-base > div.flex > div.media-image
path: 1,HTML,1,BODY,1,DIV,2,SECTION,1,MAIN,2,DIV,1,DIV,0,DIV
selector: main.undefined > div.text-neutral-base > div.flex > div.media-image
snippet: <div class="media-image full-image-full-fill full-image-medium-full md:full-image-medi…" style="background-image: url(&quot;https://assets.xfinity.com/assets/dotcom/projects_3/…&quot;);">

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
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.

URLTransfer SizeDuration
www.xfinity.com/national/xfinity-learn-ui/main.920ddd5b3a21c6b290c2.css20.7 KiB
www.xfinity.com/national/xfinity-learn-ui/6067.920ddd5b3a21c6b290c2.css76.6 KiB82 ms

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
div.xjs-shared-hover-tile > a.inline-block > div.flex > img.h-full div.xjs-shared-hover-tile > a.inline-block > div.flex > img.h-full
/assets/dotcom/projects_3/2026/jan/new_hovertile-imagery/...16.1 KiB12.1 KiB
div.xjs-shared-hover-tile > a.inline-block > div.flex > img.h-full div.xjs-shared-hover-tile > a.inline-block > div.flex > img.h-full
/assets/dotcom/projects_3/2026/jan/new_hovertile-imagery/...10.1 KiB7.6 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: 638 ms
URLTime Spent
www.comcast.net/203 ms
www.xfinity.com/434 ms
www.xfinity.com/national/0.0 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: 80 ms 134.2 KiB
URLTransfer SizeEst Savings
www.xfinity.com/national/xfinity-learn-ui/6067.920ddd5b3a21c6b290c2.css76.4 KiB60.0 KiB
23.4 KiB20.5 KiB
www.xfinity.com/national/xfinity-learn-ui/main.920ddd5b3a21c6b290c2.css20.5 KiB19.9 KiB
/chatskins/sites/10006690/flash/XFN-CIV2-Standard-FAB-Bla...21.1 KiB18.6 KiB
www.xfinity.com/va/static/xaui-widget-v2/assets/widget.css15.3 KiB15.3 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: 40 ms 1.9 MiB
URLTransfer SizeEst Savings
www.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js1.1 MiB759.3 KiB
www.xfinity.com/national/xfinity-learn-ui/main.33759f7d28357b0b34a4.js297.1 KiB220.1 KiB
/media/launch/site_10006690_default.js?codeVersion=177631...133.9 KiB116.1 KiB
www.googletagmanager.com/gtag/js?id=DC-4053494130.7 KiB98.5 KiB
/assets/smart-tag/versioned/main-v2_a8ec0b4e51efd1e1ddbdf...116.2 KiB95.4 KiB
/media/launch/tcFramework.min.js?codeVersion=1776318981650132.3 KiB81.4 KiB
cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js129.7 KiB68.4 KiB
www.googletagmanager.com/gtag/js?id=G-Q8SYB6PLKM172.0 KiB63.5 KiB
www.xfinity.com/va/static/xaui-widget-v2/assets/widget.js145.0 KiB60.7 KiB
www.googletagmanager.com/gtag/js?id=DC-4053494&cx=c&gtm=4e64f0130.7 KiB60.5 KiB
www.googletagmanager.com/gtag/js?id=AW-1023869955&cx=c&gtm=4e64f0133.9 KiB54.7 KiB
cdn.quantummetric.com/qscripts/quantum-comcast.js229.7 KiB43.9 KiB
js.pulseinsights.com/surveys.js49.6 KiB42.0 KiB
script.hotjar.com/modules.6a0f3932cb1341a35c18.js56.1 KiB41.8 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...170.1 KiB36.5 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...170.1 KiB36.4 KiB
cobrowse.xchat.xfinity.com/cobrowse/cbc-min.js?codeVersion=177631898165049.1 KiB35.8 KiB
www.xfinity.com/learn/mobile/plan/savings-calculator/chunk-XZXAV2TN.js95.1 KiB26.1 KiB
www.xfinity.com/learn/mobile/plan/savings-calculator/chunk-WO76Q6AM.js40.3 KiB21.3 KiB
assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js121.8 KiB20.8 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
Unattributable735 ms158 ms0.0 ms
www.xfinity.com/national/xfinity-learn-ui/main.33759f7d28357b0b34a4.js519 ms469 ms40 ms
www.xfinity.com/national/519 ms5.1 ms0.5 ms
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...464 ms414 ms37 ms
/media/launch/tcFramework.min.js?codeVersion=1776318981650453 ms425 ms16 ms
assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js426 ms358 ms10 ms
cdn.quantummetric.com/qscripts/quantum-comcast.js407 ms366 ms33 ms
www.xfinity.com/learn/mobile/plan/savings-calculator/chunk-XZXAV2TN.js370 ms285 ms0.7 ms
www.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js305 ms102 ms149 ms
cdn.cookielaw.org/consent/a55e6907-e160-4758-bc91-65f5b89f37b3/OtAutoBlock.js294 ms149 ms144 ms
assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js201 ms155 ms29 ms
/learn/mobile/plan/savings-calculator/embedded/converged-...156 ms0.7 ms0.2 ms
www.googletagmanager.com/gtag/js?id=G-Q8SYB6PLKM155 ms124 ms28 ms
cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js147 ms106 ms17 ms
static.cimcontent.net/data-layer/?appID=resi_shop_2145 ms110 ms5.8 ms
/assets/smart-tag/versioned/main-v2_a8ec0b4e51efd1e1ddbdf...137 ms119 ms17 ms
www.googletagmanager.com/gtag/js?id=AW-1023869955&cx=c&gtm=4e64f0109 ms96 ms13 ms
polaris.xfinity.com/globalnav/polaris.js89 ms77 ms6.8 ms
sc-static.net/scevent.min.js83 ms68 ms2.0 ms
www.xfinity.com/akam/13/6e174fdb74 ms60 ms2.8 ms
www.googletagmanager.com/gtag/js?id=DC-4053494&cx=c&gtm=4e64f060 ms48 ms12 ms
/tagserver/postToServer.min.htm?siteID=10006690&codeVersi...52 ms27 ms1.4 ms

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 Evaluation4.3 s
Other990 ms
Script Parsing & Compilation685 ms
Style & Layout362 ms
Rendering230 ms
Garbage Collection86 ms
Parse HTML & CSS74 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 cache-control:no-store header cannot enter back/forward cache.Actionable
The page has an unload handler in a sub frame.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not 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 7.5 KiB
URLTransfer SizeEst Savings
/chatskins/sites/10006690/flash/XFN-CIV2-Standard-FAB-Bla...21.4 KiB7.5 KiB

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 3.1 KiB
URLTransfer SizeEst Savings
/chatskins/sites/10006690/flash/XFN-CIV2-Standard-FAB-Bla...8.1 KiB3.1 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.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js1.1 MiB
cdn.cookielaw.org/consent/a55e6907-e160-4758-bc91-65f5b89f37b3/OtAutoBlock.js674.4 KiB
www.xfinity.com/buy/includes/dist/bundle.js?771a772362941ff2b50fca2e27156401398.5 KiB
/buy/includes/dist/vendor.bundle.js?a9eb9bf1b816443edc207...385.8 KiB
www.xfinity.com/national/xfinity-learn-ui/main.33759f7d28357b0b34a4.js297.3 KiB
cdn.quantummetric.com/qscripts/quantum-comcast.js230.2 KiB
/assets/dotcom/projects_3/2026/march/cix-10087_streamsave...221.7 KiB
www.googletagmanager.com/gtag/js?id=G-Q8SYB6PLKM172.4 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...171.1 KiB
www.xfinity.com/va/static/xaui-widget-v2/assets/widget.js145.5 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
div.h-full > div.w-full > div.image-icon-grid-logo > img.max-h-88 div.h-full > div.w-full > div.image-icon-grid-logo > img.max-h-88
/assets/dotcom/projects_3/2026/feb/cix-9557_2-23-disney-d...
div.h-full > div > picture > img.h-auto div.h-full > div > picture > img.h-auto
assets.xfinity.com/assets/dotcom/projects/cix-2602_xpc-re-platform/Spacer.png
div.h-full > div > picture > img.h-auto div.h-full > div > picture > img.h-auto
assets.xfinity.com/assets/dotcom/projects/cix-2602_xpc-re-platform/Spacer.png

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

●Layout shift culprits
●Optimize DOM size
●Font display
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●User Timing marks and measures 15 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 2 animated elements found
●Network Requests
●Network Round Trip Times 250 ms
●Server Backend Latencies 1,060 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 20 ms
●Avoid large layout shifts 15 layout shifts found
○INP breakdown
95

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-1b6c5383-fb7c-4ec0-9ddd-090bbbcb3429 div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-1b6c5383-fb7c-4ec0-9ddd-090bbbcb3429
div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-8c88c1f4-3e7c-42a2-a714-4e037143cbce div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-8c88c1f4-3e7c-42a2-a714-4e037143cbce
div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-5fc211d3-3a17-4a55-9485-114a6b6de0d5 div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-5fc211d3-3a17-4a55-9485-114a6b6de0d5
div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-f9147b3b-0e56-46ff-b8ce-e7a90a516904 div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-f9147b3b-0e56-46ff-b8ce-e7a90a516904

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.

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
Cookie Policy div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a.ot-cookie-policy-link
○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
●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
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[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
●`<frame>` or `<iframe>` elements have a title
●`<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
●Skip links are focusable.
●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
○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
○No form fields have multiple labels
○`<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.
○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
Unload event listeners are deprecated and will be removed.
static.cimcontent.net/data-layer/?appID=resi_shop_2 line 3, col 18536
AttributionReporting
static.cimcontent.net/data-layer/?appID=resi_shop_2 line 3, col 11396
SharedStorage
c.amazon-adsystem.com/aat/amzn.js line 1, col 7935

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.xfinity.com/national/
Attestation check for Shared Storage on https://ara.paa-reporting-advertising.amazon failed.
ReferenceError: dataLayer is not defined at gtag (<anonymous>:2:17) at <anonymous>:2:43 at https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:14899 at new Promise (<anonymous>) at _satellite.<computed> (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:14876) at <anonymous>:1:26 at e._insertCursor (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:2783) at e._writeScriptToken (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:3436) at e._handleScriptToken (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:1995) at e._writeImpl (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:607) at e.write (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:170) at r (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:30528) at i (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:29897) at c (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:30904) at o (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:21841) at r (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:22182) at f (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:22240) at https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:22527
ReferenceError: dataLayer is not defined at gtag (<anonymous>:2:17) at <anonymous>:2:43 at https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:14899 at new Promise (<anonymous>) at _satellite.<computed> (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:14876) at <anonymous>:1:27 at e._insertCursor (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:2783) at e._writeScriptToken (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:3436) at e._handleScriptToken (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:1995) at e._writeImpl (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:607) at e.write (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:6:170) at r (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:30528) at i (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:29897) at c (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:30904) at o (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:21841) at r (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:22182) at f (https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:22240) at https://assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js:5:22527

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
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...
www.xfinity.com/national/xfinity-learn-ui/main.33759f7d28357b0b34a4.js
www.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js
/media/launch/tcFramework.min.js?codeVersion=1776318981650
/media/launch/site_10006690_default.js?codeVersion=177631...
s.pinimg.com/ct/core.jss.pinimg.com/ct/core.js.map
polaris.xfinity.com/globalnav/polaris.jspolaris.xfinity.com/globalnav/polaris.prod.en.js.map
polaris.xfinity.com/globalnav/orc.html?domain=www.xfinity.com&v=2026.06.0polaris.xfinity.com/globalnav/orc.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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
92

SEO

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

Content Best Practices

Canonical links suggest which URL to show in search results. Learn more about canonical links.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

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

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

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