Skip to content
Audit Complete

Results for https://comcast.com

Visit site

URL substituted: You submitted https://comcast.com but we scanned https://www.comcast.com instead — the submitted hostname refused our connection, so we retried on the www. variant

Spain Spain · Madrid Completed: Apr 16, 2026 17:58 UTC
Share card preview
Share on X Share on LinkedIn Share on Reddit Share on Hacker News Share via Email Download share image Embed Badge
Download JSON Download Markdown Report

Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
D68

Site Health

Score: 68 / 100

Based on 8 categories, 0 sections

Room to improve — your 21.9s load time is above Google's 2.5s 'Good' threshold.

Several missing protections leave your users and data exposed.

Several issues make your site difficult for assistive technology users.

Solid SEO basics — a few optimizations could boost rankings.

Solid infrastructure — fast server responses across the board.

Several regulatory requirements are not yet met.

Missing metadata means poor previews on social media and search.

Heavier than average — reducing page weight saves energy and bandwidth.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

Top Priorities (5)

1

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers
2

HSTS header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers
3

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy
4

Page weighs 24.8 MB (6.5 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget
5

No <main> landmark found

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Landmark Structure
View fix priority matrix

Fix Priority Matrix

5 findings

Quick Wins

3

High impact, low effort — start here.

Strategic

2

High impact, requires investment.

Easy Improvements

0

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

0

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →
BeaverCheck badge
Embed this badge
[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fcomcast.com)](https://beavercheck.com/results/e2adde5b-4290-466b-b600-ce030fa0c2a1)
<a href="https://beavercheck.com/results/e2adde5b-4290-466b-b600-ce030fa0c2a1"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fcomcast.com" alt="BeaverCheck Score"></a>
https://beavercheck.com/badge?url=https%3A%2F%2Fcomcast.com

This badge auto-updates with your latest scan result.

What fixing these means

Your site has several issues that may be affecting user experience and business outcomes. Your LCP of 21.9s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your user trust.

3 security gaps detected — browsers may warn visitors about your site.
Your LCP is 21.9s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.
1 accessibility issue excludes users who rely on assistive technology.
C
Could reach Estimate based on resolving critical issues

Conversion Barriers

3 critical 8 warning

11 barrier(s) likely increasing bounce by ~40%.

Speed (2)

Page takes 21.9s to load

+12% bounce

Users abandon at ~3s — you're 19.4s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

Page feels frozen for 6.3s

+5% bounce

Clicks on the primary CTA are ignored while JavaScript runs

Fix: Break up long tasks; defer non-critical JavaScript to post-hydration

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Usability (2)

Layout shifts during page load

+3% bounce

Content movement causes mis-clicks on CTAs and form fields

Fix: Add width/height to images; reserve space for late-loading embeds

No viewport meta tag

+15% bounce

Mobile browsers render at desktop width and shrink — text unreadable, tap targets miniature

Fix: Add <meta name="viewport" content="width=device-width, initial-scale=1">

Content (4)

No Open Graph tags

+2% bounce

Links shared on LinkedIn / Slack / Facebook show bare URLs — referral clicks drop

Fix: Add og:title, og:description, og:image, og:url to the page head

No structured data

+2% bounce

No rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices

Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)

Thin content

+3% bounce

Under 300 words — visitors bounce looking for substance, search engines rank competitors first

Fix: Add a substantive FAQ, product detail, or case-study section

Content is hard to read

+2% bounce

Graduate-level reading difficulty — limits the addressable audience for product or blog pages

Fix: Shorten sentences; replace jargon with plain language; target Flesch ease ≥60

Navigation (1)

No skip-to-content link

+1% bounce

Keyboard and screen-reader users must tab through the entire header on every page

Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

$500 investment → $1.64/month returns + USD 157,500 risk avoided

Payback period: > 2 years First-year ROI: -96%

Investment

$500

5h · 5 findings

Monthly returns

$1.64 /mo

~$20 / year

  • Bandwidth savings $1.64

Regulatory risk avoided

USD 157,500

if kept compliant

  • ADA Title III USD 150,000
  • CCPA/CPRA USD 7,500

$150 — in quick wins — start here for the fastest payback

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

$500

5.0 developer hours at $100/hr

Based on United States rates ($100/hr)

Quick wins
$150 3 fixes in ~90 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions
$ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

$13,127 / month at risk

~$157,520 / year if left unfixed

Compliance Risk

$157,500

ADA Title IIICCPA/CPRA
  • No privacy policy link detected
    CCPA/CPRA: USD 2,500 – USD 7,500
  • Privacy Policy not detected
    CCPA/CPRA: USD 2,500 – USD 7,500
  • No <main> landmark found
    ADA Title III: USD 25,000 – USD 150,000

+2 more

Bandwidth Waste

$1.64 /mo

20538.1 MB/mo × 0.080 USD/GB

  • Optimize transfer: save ~2.1 MB per page load
    Saves $1.64/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Unique monthly visitors from your analytics

Purchases, signups, or key actions

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue
Current bounce (est.)
After fixes (est.)
Estimated bounce reduction

Fix 5 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

Was this report useful?

Thanks for your feedback!

We'll use a cached audit if available, or offer to scan.

Checking for existing audit...

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

16
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

13.13 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

21.94 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

6.35 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.191

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

15.57 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

44.89 s

Detailed Report

Audit breakdown by category with detailed findings.

16

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

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

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 s177.6 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...21600.0 s177.6 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 s34.0 KiB
assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js26290.0 s38.8 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
cdn.cookielaw.org/logos/static/ot_company_logo.png86400.0 s19.1 KiB
/assets/dotcom/adrum/adrum-ext.cf5592562c45abb4a2ba007119...77283.0 s17.8 KiB
polaris.xfinity.com/akam/13/68825a7b21600.0 s9.4 KiB
www.xfinity.com/akam/13/68825a7b21600.0 s9.4 KiB
static.hotjar.com/c/hotjar-0.js?sv=060.0 s5.7 KiB
assets.xfinity.com/assets/dotcom/lzchat/xfinity_lzchat.js54787.0 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.woff21755845.0 s29.7 KiB
assets.comcast.com/assets/common/fonts/x-sans/xsans_w_bd.woff2921630.0 s17.0 KiB
assets.comcast.com/assets/common/fonts/x-sans/xsans_w_sbd.woff21766679.0 s17.0 KiB
xchat.xfinity.com/tagserver/js/ads-blocking-detector.min.js3600.0 s2.0 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...521674.0 s6.7 KiB
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC42357208478b480...3600.0 s928 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC94e2ad48a7814aa...3600.0 s881 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC3a1bdae468b741b...3600.0 s822 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCfdc3d33d0371449...3600.0 s814 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCfd97c8de82c64b9...3600.0 s811 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC34c7dcc5f1464eb...3600.0 s808 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC9bf48c62e2ca4d0...3600.0 s777 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC3317213b5aca4ad...3600.0 s756 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCad306c4e8e634b8...3600.0 s744 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC568155bdae6a4e7...3600.0 s737 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCa39e519a632f49d...3600.0 s728 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC230515b9a450475...3600.0 s719 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC0041185b0b35409...3600.0 s719 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC7a3c7cc6ad444ad...3600.0 s703 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCe2bf85549c404e8...3600.0 s649 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC16a17cf232a5456...3600.0 s646 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC59d770dcd38f4b8...3600.0 s627 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC497573842579422...3600.0 s601 B
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC903fc1375d094fd...3600.0 s563 B
/serve?udid=ecca6377-8d7e-4bf5-b921-796d891e985d&device_t...0.0 ms391 B
cdn.cookielaw.org/logos/static/ot_close.svg86400.0 s625 B
/assets/dotcom/xds-icons/outbound_calls/ic_outbound_calls...2070178.0 s1.2 KiB

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:0.191371] map[node:map[boundingRect:map[bottom:1261 height:823 left:0 right:412 top:438 width:412] lhId:page-7-DIV nodeLabel:No contract. Cancel anytime. The most reliable fiber-powered WiFi. One price. … path:1,HTML,1,BODY,1,DIV,2,SECTION,1,MAIN,2,DIV selector:div#root > section.xdsPage-layout > main.undefined > div.text-neutral-base snippet:<div class="text-neutral-base light max-w-screen-2xl mx-auto w-full" style="background-color:transparent !important" data-tracking-event-container="true"> type:node] score:0.152907] map[node:map[boundingRect:map[bottom:823 height:328 left:0 right:412 top:495 width:412] lhId:page-10-DIV nodeLabel:Please confirm your Cookie preferences here. We use Cookies to improve our Serv… path:1,HTML,1,BODY,31,DIV,1,DIV selector:body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk snippet:<div id="onetrust-banner-sdk" class="otFlat otRelFont bottom ot-wo-title ot-buttons-fw" tabindex="0" style="bottom: 0px;"> type:node] score:0.010289] map[node:map[boundingRect:map[bottom:823 height:328 left:0 right:412 top:495 width:412] lhId:page-10-DIV nodeLabel:Please confirm your Cookie preferences here. We use Cookies to improve our Serv… path:1,HTML,1,BODY,31,DIV,1,DIV selector:body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk snippet:<div id="onetrust-banner-sdk" class="otFlat otRelFont bottom ot-wo-title ot-buttons-fw" tabindex="0" style="bottom: 0px;"> type:node] score:0.008383] map[node:map[boundingRect:map[bottom:823 height:328 left:0 right:412 top:495 width:412] lhId:page-10-DIV nodeLabel:Please confirm your Cookie preferences here. We use Cookies to improve our Serv… path:1,HTML,1,BODY,31,DIV,1,DIV selector:body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk snippet:<div id="onetrust-banner-sdk" class="otFlat otRelFont bottom ot-wo-title ot-buttons-fw" tabindex="0" style="bottom: 0px;"> type:node] score:0.005616] map[node:map[boundingRect:map[bottom:823 height:328 left:0 right:412 top:495 width:412] lhId:page-10-DIV nodeLabel:Please confirm your Cookie preferences here. We use Cookies to improve our Serv… path:1,HTML,1,BODY,31,DIV,1,DIV selector:body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk snippet:<div id="onetrust-banner-sdk" class="otFlat otRelFont bottom ot-wo-title ot-buttons-fw" tabindex="0" style="bottom: 0px;"> type:node] score:0.002032]]
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] map[node:map[boundingRect:map[bottom:849 height:624 left:0 right:412 top:225 width:412] lhId:page-0-DIV nodeLabel:Xfinity INTERNET 300 Mbps $45.00/mo for 5 years Downloads up to: 300 Mbps WiFi… path:1,HTML,1,BODY,0,APP-ROOT,2,MAIN,1,APP-EMBEDDED-CONVERGED-OFFERS,0,SECTION,0,DIV,1,DIV,1,APP-CONVERGED-DEALS-SWIPER,0,DIV,1,DIV selector:div.cards-wrapper > app-converged-deals-swiper > div.swiper > div.swiper-container-wrapper snippet:<div _ngcontent-ng-c183693517="" class="swiper-container-wrapper"> type:node] score:0] map[node:map[boundingRect:map[bottom:849 height:664 left:0 right:412 top:185 width:412] lhId:page-1-DIV nodeLabel:One internet price. 5 years. Guaranteed. Xfinity INTERNET 300 Mbps $45.00/mo … path:1,HTML,1,BODY,0,APP-ROOT,2,MAIN,1,APP-EMBEDDED-CONVERGED-OFFERS,0,SECTION,0,DIV,1,DIV selector:app-embedded-converged-offers > section.container > div.container-inside > div.cards-wrapper snippet:<div _ngcontent-ng-c100910156="" class="cards-wrapper d-flex"> type:node] score:0 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://www.xfinity.com/learn/mobile/plan/savings-calculator/assets/fonts/dm-sans/DMSans-Bold.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:642 height:197 left:46 right:282 top:444 width:236] lhId:page-2-DIV nodeLabel:MOBILE PLAN Unlimited Included for 1 year with internet Data: Unlimited (reduce… path:1,HTML,1,BODY,0,APP-ROOT,2,MAIN,1,APP-EMBEDDED-CONVERGED-OFFERS,0,SECTION,0,DIV,1,DIV,1,APP-CONVERGED-DEALS-SWIPER,0,DIV,1,DIV,0,SWIPER-CONTAINER,0,SWIPER-SLIDE,0,APP-CARD,0,APP-DEAL-CARD-CONTROLLER,0,APP-HOST-CONVERGED-COMPARISON-DEAL-CARD,1,DIV,1,DIV selector:app-deal-card-controller.d-flex > app-host-converged-comparison-deal-card > div.card-body > div.pt-medium snippet:<div _ngcontent-ng-c1216912464="" class="pt-medium pb-semi-small border-bottom"> type:node] score:0 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://www.xfinity.com/learn/mobile/plan/savings-calculator/assets/fonts/dm-sans/DMSans-SemiBold.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:642 height:197 left:46 right:282 top:444 width:236] lhId:page-2-DIV nodeLabel:MOBILE PLAN Unlimited Included for 1 year with internet Data: Unlimited (reduce… path:1,HTML,1,BODY,0,APP-ROOT,2,MAIN,1,APP-EMBEDDED-CONVERGED-OFFERS,0,SECTION,0,DIV,1,DIV,1,APP-CONVERGED-DEALS-SWIPER,0,DIV,1,DIV,0,SWIPER-CONTAINER,0,SWIPER-SLIDE,0,APP-CARD,0,APP-DEAL-CARD-CONTROLLER,0,APP-HOST-CONVERGED-COMPARISON-DEAL-CARD,1,DIV,1,DIV selector:app-deal-card-controller.d-flex > app-host-converged-comparison-deal-card > div.card-body > div.pt-medium snippet:<div _ngcontent-ng-c1216912464="" class="pt-medium pb-semi-small border-bottom"> type:node] score:0]]

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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:47.161 source:map[column:294797 line:0 type:source-location url:https://www.xfinity.com/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/HG/ZOaREVBgYC urlProvider:network]] map[reflowTime:23.33 source:map[column:36243 line:1 type:source-location url:https://www.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js urlProvider:network]] map[reflowTime:2.919 source:map[column:3.857851e+06 line:1 type:source-location url:https://www.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js urlProvider:network]] map[reflowTime:1.048 source:map[column:3.852117e+06 line:1 type:source-location url:https://www.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js urlProvider:network]] map[reflowTime:0.595 source:map[column:3.863869e+06 line:1 type:source-location url:https://www.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js urlProvider:network]] map[reflowTime:1.927 source:map[column:734140 line:1 type:source-location url:https://www.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js urlProvider:network]] map[reflowTime:1.129 source:map[column:6761 line:1 type:source-location url:https://www.xfinity.com/akam/13/68825a7b 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.h-full > div > picture > img.h-auto div.h-full > div > picture > img.h-auto
/assets/dotcom/projects_3/2026/march/cix-10087_streamsave...60.6 KiB40.8 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/...32.8 KiB29.8 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/...14.9 KiB13.5 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/...12.1 KiB11.0 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_2/cix-6547_large-prices-on-homepa...7.0 KiB6.4 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_2/cix-6547_large-prices-on-homepa...4.8 KiB4.3 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-6-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

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/6067.920ddd5b3a21c6b290c2.css76.6 KiB905 ms
www.xfinity.com/national/xfinity-learn-ui/main.920ddd5b3a21c6b290c2.css20.7 KiB453 ms

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

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.

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: 1.7 s
URLTime Spent
www.comcast.com/753 ms
www.xfinity.com/942 ms
www.xfinity.com/national/0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
No contract. Cancel anytime. The most reliable fiber-powered WiFi. One price. … div#root > section.xdsPage-layout > main.undefined > div.text-neutral-base
0.153
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.010
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.008
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.006
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.002
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.002
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.002
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.001
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… div.ot-sdk-row > div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text
0.001
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.001
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.001
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.001
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.001
Please confirm your Cookie preferences here. We use Cookies to improve our Serv… body.overscroll-none > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.001
Xfinity INTERNET 300 Mbps $45.00/mo for 5 years Downloads up to: 300 Mbps WiFi… div.cards-wrapper > app-converged-deals-swiper > div.swiper > div.swiper-container-wrapper
0.000

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: 750 ms 117.2 KiB
URLTransfer SizeEst Savings
www.xfinity.com/national/xfinity-learn-ui/6067.920ddd5b3a21c6b290c2.css76.4 KiB61.2 KiB
23.4 KiB20.9 KiB
www.xfinity.com/national/xfinity-learn-ui/main.920ddd5b3a21c6b290c2.css20.5 KiB19.9 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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 6.5 s 1.7 MiB
URLTransfer SizeEst Savings
www.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js1.1 MiB760.9 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
/assets/smart-tag/versioned/main-v2_a8ec0b4e51efd1e1ddbdf...116.2 KiB95.4 KiB
/media/launch/tcFramework.min.js?codeVersion=1776318981650132.3 KiB83.2 KiB
cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js129.7 KiB68.4 KiB
www.xfinity.com/va/static/xaui-widget-v2/assets/widget.js145.0 KiB60.7 KiB
www.googletagmanager.com/gtag/js?id=DC-4053494130.7 KiB53.5 KiB
cdn.quantummetric.com/qscripts/quantum-comcast.js229.6 KiB44.0 KiB
js.pulseinsights.com/surveys.js49.5 KiB42.0 KiB
script.hotjar.com/modules.6a0f3932cb1341a35c18.js56.1 KiB41.8 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...176.6 KiB37.5 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...176.6 KiB37.4 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
Unattributable2.2 s900 ms0.0 ms
www.xfinity.com/national/xfinity-learn-ui/main.33759f7d28357b0b34a4.js2.0 s1.7 s118 ms
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...1.6 s1.3 s88 ms
assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js1.5 s1.3 s17 ms
cdn.cookielaw.org/consent/a55e6907-e160-4758-bc91-65f5b89f37b3/OtAutoBlock.js1.5 s1.1 s349 ms
/media/launch/tcFramework.min.js?codeVersion=17763189816501.4 s1.3 s75 ms
www.xfinity.com/learn/mobile/plan/savings-calculator/chunk-XZXAV2TN.js1.2 s846 ms1.9 ms
www.xfinity.com/national/1.1 s14 ms1.4 ms
www.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js1.0 s282 ms549 ms
assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js1.0 s881 ms77 ms
static.cimcontent.net/data-layer/?appID=resi_shop_2533 ms498 ms12 ms
cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js383 ms287 ms38 ms
cdn.quantummetric.com/qscripts/quantum-comcast.js372 ms265 ms99 ms
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCfdc3d33d0371449...369 ms342 ms0.7 ms
/assets/smart-tag/versioned/main-v2_a8ec0b4e51efd1e1ddbdf...347 ms304 ms41 ms
/learn/mobile/plan/savings-calculator/embedded/converged-...342 ms2.5 ms0.6 ms
www.googletagmanager.com/gtag/js?id=DC-4053494275 ms247 ms26 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js255 ms191 ms2.1 ms
www.xfinity.com/akam/13/68825a7b246 ms218 ms9.9 ms
/tagserver/postToServer.min.htm?siteID=10006690&codeVersi...166 ms83 ms3.9 ms
www.xfinity.com/learn/mobile/plan/savings-calculator/chunk-U7LQYFXN.js149 ms114 ms0.8 ms
/assets/smart-tag/versioned/cjs_min_92abedfd1b9757a428bfc...140 ms124 ms4.5 ms
/media/launch/site_10006690_default.js?codeVersion=177631...132 ms5.2 ms126 ms
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC42357208478b480...128 ms126 ms0.4 ms
script.hotjar.com/modules.6a0f3932cb1341a35c18.js127 ms102 ms23 ms
js.pulseinsights.com/surveys.js127 ms104 ms21 ms
polaris.xfinity.com/globalnav/polaris.js122 ms75 ms14 ms
polaris.xfinity.com/akam/13/68825a7b115 ms94 ms3.8 ms
static.ads-twitter.com/uwt.js98 ms91 ms5.1 ms
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC3aee30283a73468...97 ms95 ms0.6 ms
www.xfinity.com/learn/mobile/plan/savings-calculator/chunk-YUVF67YJ.js76 ms21 ms0.4 ms
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RC68156b5be9d44a3...72 ms71 ms0.5 ms
tag.bounceexchange.com/1369/i.js55 ms46 ms8.1 ms
media.xchat.xfinity.com/media/launch/chatLoader.min.js?codeVersion=177631898165055 ms45 ms7.4 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 Evaluation13.7 s
Other2.5 s
Script Parsing & Compilation1.8 s
Style & Layout1.1 s
Rendering519 ms
Garbage Collection224 ms
Parse HTML & CSS177 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 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 2.4 KiB
URLTransfer SizeEst Savings
/chatskins/sites/10006690/flash/XFN-CIV2-Standard-FAB-Bla...6.5 KiB2.4 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...221.8 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...177.6 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...177.6 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 > picture > img.h-auto div.h-full > div > picture > img.h-auto
/assets/dotcom/projects_3/2026/march/cix-10087_streamsave...
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

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

●Optimize DOM size
●Font display
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 4 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 130 ms
●Server Backend Latencies 360 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
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-8e6865a8-8b75-4c00-bdd3-34c30599c292 div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-8e6865a8-8b75-4c00-bdd3-34c30599c292

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
○`[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.
○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

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/
Access to fetch at 'https://fid.agkn.com/f?apiKey=2813478107' from origin 'https://www.xfinity.com' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
www.xfinity.com/national/
Attestation check for Shared Storage on https://ara.paa-reporting-advertising.amazon failed.
fid.agkn.com/f?apiKey=2813478107
Failed to load resource: net::ERR_FAILED
assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js line 49, col 55
TransUnion error: TypeError: Failed to fetch at window.fetch (https://static.cimcontent.net/data-layer/?appID=resi_shop_2:4:11397) at https://assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js:145:436 at https://assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js:50:56 at initTransUnion (<anonymous>:2:159) at <anonymous>:2:562 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...
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

Performance issues directly impact user engagement and conversion rates.

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

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●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`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

50
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

710 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

2.40 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

684 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.093

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

3.99 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

8.61 s

Detailed Report

Audit breakdown by category with detailed findings.

50

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

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 s177.6 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...21600.0 s177.6 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 s34.2 KiB
assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js26264.0 s38.8 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
cdn.cookielaw.org/logos/static/ot_company_logo.png86400.0 s19.1 KiB
/assets/dotcom/adrum/adrum-ext.cf5592562c45abb4a2ba007119...77256.0 s17.8 KiB
polaris.xfinity.com/akam/13/68825a7b21600.0 s9.4 KiB
www.xfinity.com/akam/13/68825a7b21600.0 s9.4 KiB
static.hotjar.com/c/hotjar-0.js?sv=060.0 s5.7 KiB
assets.xfinity.com/assets/dotcom/lzchat/xfinity_lzchat.js54760.0 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.woff21755818.0 s29.7 KiB
assets.comcast.com/assets/common/fonts/x-sans/xsans_w_bd.woff2921603.0 s17.0 KiB
assets.comcast.com/assets/common/fonts/x-sans/xsans_w_sbd.woff21766652.0 s17.0 KiB
xchat.xfinity.com/tagserver/js/ads-blocking-detector.min.js3600.0 s2.0 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...521647.0 s6.7 KiB
/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
/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=3eb17f8e-2d7c-49f0-93d8-074f95a01eaf&device_t...0.0 ms391 B
cdn.cookielaw.org/logos/static/ot_close.svg86400.0 s643 B
/assets/dotcom/xds-icons/outbound_calls/ic_outbound_calls...2068648.0 s1.8 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.

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

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-2-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

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

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: 589 ms
URLTime Spent
www.comcast.com/203 ms
www.xfinity.com/386 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 134.7 KiB
URLTransfer SizeEst Savings
www.xfinity.com/national/xfinity-learn-ui/6067.920ddd5b3a21c6b290c2.css76.4 KiB60.4 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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 650 ms 1.7 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
/assets/smart-tag/versioned/main-v2_a8ec0b4e51efd1e1ddbdf...116.2 KiB95.4 KiB
/media/launch/tcFramework.min.js?codeVersion=1776318981650132.3 KiB81.5 KiB
cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js129.7 KiB68.4 KiB
www.xfinity.com/va/static/xaui-widget-v2/assets/widget.js145.0 KiB60.7 KiB
www.googletagmanager.com/gtag/js?id=DC-4053494130.7 KiB53.5 KiB
cdn.quantummetric.com/qscripts/quantum-comcast.js229.6 KiB44.1 KiB
js.pulseinsights.com/surveys.js49.5 KiB42.0 KiB
script.hotjar.com/modules.6a0f3932cb1341a35c18.js56.1 KiB41.8 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...176.6 KiB37.5 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...176.6 KiB37.4 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.js95.0 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
Unattributable568 ms234 ms0.0 ms
assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js413 ms377 ms4.9 ms
www.xfinity.com/national/xfinity-learn-ui/main.33759f7d28357b0b34a4.js377 ms339 ms24 ms
cdn.cookielaw.org/consent/a55e6907-e160-4758-bc91-65f5b89f37b3/OtAutoBlock.js368 ms247 ms94 ms
/media/launch/tcFramework.min.js?codeVersion=1776318981650336 ms314 ms13 ms
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...332 ms300 ms26 ms
www.xfinity.com/national/327 ms3.7 ms0.4 ms
www.xfinity.com/learn/mobile/plan/savings-calculator/chunk-XZXAV2TN.js290 ms221 ms0.4 ms
assets.adobedtm.com/331fbea29f79/e5b825f47ce6/launch-18bdbdf8eca5.min.js238 ms208 ms18 ms
www.xfinity.com/national/xfinity-learn-ui/6067.797921dc6f1e884264ab.js188 ms63 ms91 ms
static.cimcontent.net/data-layer/?appID=resi_shop_2134 ms127 ms1.7 ms
/331fbea29f79/e5b825f47ce6/57b7e5d2a9ba/RCfdc3d33d0371449...103 ms102 ms0.1 ms
/learn/mobile/plan/savings-calculator/embedded/converged-...103 ms0.4 ms0.3 ms
cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js99 ms70 ms12 ms
cdn.quantummetric.com/qscripts/quantum-comcast.js88 ms65 ms21 ms
/assets/smart-tag/versioned/main-v2_a8ec0b4e51efd1e1ddbdf...85 ms74 ms11 ms
www.googletagmanager.com/gtag/js?id=DC-405349476 ms56 ms8.0 ms
www.xfinity.com/akam/13/68825a7b56 ms51 ms2.7 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 Evaluation3.3 s
Other601 ms
Script Parsing & Compilation414 ms
Style & Layout262 ms
Rendering135 ms
Garbage Collection64 ms
Parse HTML & CSS51 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?771a772362941ff2b50fca2e27156401399.1 KiB
/buy/includes/dist/vendor.bundle.js?a9eb9bf1b816443edc207...386.4 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
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...177.6 KiB
/nFJxi99D8BHrl/WvGC9kdLuz9/jXo/1uazfcN2QuNzDr/eQUCVyttMg/...177.6 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
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●User Timing marks and measures 4 user timings
●Avoid long main-thread tasks 15 long tasks found
●Avoid non-composited animations 2 animated elements found
●Network Requests
●Network Round Trip Times 130 ms
●Server Backend Latencies 330 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 120 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-8b9e8d5d-ec10-4106-be9f-92f1d3a909a7 div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-8b9e8d5d-ec10-4106-be9f-92f1d3a909a7
div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-a978d544-2066-47dd-886c-7aba95f489f7 div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-a978d544-2066-47dd-886c-7aba95f489f7
div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-00e2aa62-ab4b-47f8-acd2-110691d79bee div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-00e2aa62-ab4b-47f8-acd2-110691d79bee
div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-43b3eaa8-fcd3-4004-8adf-1f1994bc5973 div.hx-flex > div.hx-flex > prism-button.hx-pointer-events-auto > button#prism-button-43b3eaa8-fcd3-4004-8adf-1f1994bc5973

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/
Access to fetch at 'https://fid.agkn.com/f?apiKey=2813478107' from origin 'https://www.xfinity.com' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
www.xfinity.com/national/
Attestation check for Shared Storage on https://ara.paa-reporting-advertising.amazon failed.
fid.agkn.com/f?apiKey=2813478107
Failed to load resource: net::ERR_FAILED
assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js line 49, col 55
TransUnion error: TypeError: Failed to fetch at window.fetch (https://static.cimcontent.net/data-layer/?appID=resi_shop_2:4:11397) at https://assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js:145:436 at https://assets.xfinity.com/assets/dotcom/adrum/adrum22603859.js:50:56 at initTransUnion (<anonymous>:2:159) at <anonymous>:2:562 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...
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

Performance issues directly impact user engagement and conversion rates.

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

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●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`

Send Feedback