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Audit Complete

Results for https://nbcnews.com

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News / Media · estimated Tracking: pageviews
Spain Spain · Madrid Completed: Apr 16, 2026 17:40 UTC
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Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
C70

Site Health

Score: 70 / 100

Based on 8 categories, 0 sections

Room to improve — your 10.9s 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.

Well-optimized for search — your content is discoverable.

Solid infrastructure — fast server responses across the board.

Mostly compliant — a few items need attention.

Rich content metadata — your pages look great everywhere.

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

How you compare

Boomerang sites average 71
At average
Better than 27% of Boomerang sites See full Boomerang benchmark →
Framework sites average 74
At average
Better than 7% of Framework sites

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 22.4 MB (6.5 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget
5

1 image(s) missing alt attribute

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

Accessibility › Alt Text Quality
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
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[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fnbcnews.com)](https://beavercheck.com/results/5a6a0559-3889-4124-986c-90ce62325c52)
<a href="https://beavercheck.com/results/5a6a0559-3889-4124-986c-90ce62325c52"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fnbcnews.com" alt="BeaverCheck Score"></a>
https://beavercheck.com/badge?url=https%3A%2F%2Fnbcnews.com

This badge auto-updates with your latest scan result.

What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 10.9s 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 10.9s — 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.

Conversion Barriers

3 critical 4 warning

7 barrier(s) likely increasing bounce by ~29%.

Speed (2)

Page takes 10.9s to load

+12% bounce

Users abandon at ~3s — you're 8.4s over the 2.5s threshold

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

Page feels frozen for 4.7s

+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

Navigation (3)

32 link(s) with generic text ("click here", "read more")

+1% bounce

Screen-reader users navigating by link list see no context — and search engines can't infer relevance

Fix: Rewrite with descriptive phrases that identify the destination

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

4 broken link(s) on the page

+5% bounce

Clicks land on 404s — trust drops and the session often ends

Fix: Fix or remove the broken destinations surfaced on the Content tab

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

Return on Investment

$500 investment → $4,515/month returns + USD 157,500 risk avoided

Payback period: < 1 month First-year ROI: +10735%

Investment

$500

5h · 5 findings

Monthly returns

$4,515 /mo

~$54,175 / year

  • Conversions recovered $4,513
  • Bandwidth savings $1.64

Regulatory risk avoided

USD 157,500

if kept compliant

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

Payback period

0 12mo 24mo

$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
  • 6 advertising/retargeting trackers detected
    CCPA/CPRA: USD 2,500 – USD 7,500
  • Trackers detected but no cookie policy found
    CCPA/CPRA: USD 2,500 – USD 7,500

+8 more

Bandwidth Waste

$1.64 /mo

20490.6 MB/mo × 0.080 USD/GB

  • Optimize transfer: save ~2.0 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?

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

26
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
85
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.
85
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.

4.94 s

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

10.89 s

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

4.72 s

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

0.057

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

16.24 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.

49.44 s

Detailed Report

Audit breakdown by category with detailed findings.

26

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.

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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:1.437 source:map[column:264529 line:1 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.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:30.544 source:map[column:50856 line:8 type:source-location url:https://nodeassets.nbcnews.com/jwplayer/jwplayer-8.30.1/jwplayer.js urlProvider:network]] map[reflowTime:5.96 source:map[column:804181 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.js urlProvider:network]] map[reflowTime:18.74 source:map[column:174327 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.js urlProvider:network]] map[reflowTime:0.316 source:map[column:174074 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.js urlProvider:network]] map[reflowTime:5.288 source:map[column:265001 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.js urlProvider:network]] map[reflowTime:6.697 source:map[column:462502 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.js urlProvider:network]] map[reflowTime:2.954 source:map[column:488377 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.js urlProvider:network]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
A body is removed on a gurney from the home of former Virginia Lt. Gov. Justin … div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-760x428,f_auto,q_auto:best/rockcms/...94.3 KiB81.6 KiB
People stand outside of a damaged building with a damaged car parked out front div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-760x428,f_auto,q_auto:best/rockcms/...90.1 KiB77.4 KiB
Smoke rises behind palm trees and a McDonald's "Golden Arches" sign in Al-Hosh,… div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-760x428,f_auto,q_auto:best/rockcms/...89.7 KiB77.0 KiB
div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.background > div.bg-background > div.bg-background__picture div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.background > div.bg-background > div.bg-background__picture
/image/upload/t_fit-360w,f_avif,q_auto:eco,dpr_2/rockcms/...193.0 KiB42.9 KiB
A split composite image of Joe Hathaway, left, and Analilia Meija div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-760x428,f_auto,q_auto:best/rockcms/...49.8 KiB37.9 KiB
Robert F. Kennedy, Jr. div.storyline-media > a > picture.teasePicture > img
/image/upload/t_focal-762x508,f_auto,q_auto:best/rockcms/...36.7 KiB28.0 KiB
Novo To Sell Weight-Loss Drug Wegovy Directly To Patients div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-760x428,f_auto,q_auto:best/rockcms/...31.5 KiB23.9 KiB
/image/upload/q_auto:eco/f_auto/newsgroup-logos/nbcnewsno...19.4 KiB18.5 KiB
NBC Select div.styles_wrapper__b539O > div.styles_wrapperTop__Rar3Q > h2.styles_title__Vyf10 > img.titleLogo
media-cldnry.s-nbcnews.com/image/upload/rockcms/2023-07/S-H-C-3e0612.png9.4 KiB9.4 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-IMG
nodeLabel: Smoke rises behind palm trees and a McDonald's "Golden Arches" sign in Al-Hosh,…
path: 1,HTML,1,BODY,1,DIV,0,DIV,2,DIV,0,DIV,1,DIV,0,DIV,0,SECTION,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,PICTURE,3,IMG
selector: div.styles_gridStackWrapper__Z_AMc > div > picture > img
snippet: <img src="https://media-cldnry.s-nbcnews.com/image/upload/t_focal-760x428,f_auto,q_a…" alt="Smoke rises behind palm trees and a McDonald's &quot;Golden Arches&quot; sign in Al-…">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates
value: No additional origins are good candidates for preconnecting

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
assets.adobedtm.com/launch-EN03682f66064449c8b87d78eae3e2fc57.min.js3600.0 s260.5 KiB
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mssl.fwmrm.net/libs/adm/7.2.1/AdManager.js0.0 ms92.1 KiB
cdn.tinypass.com/api/tinypass.min.js14400.0 s132.2 KiB
client.aps.amazon-adsystem.com/publisher.js3600.0 s90.8 KiB
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/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
ak.sail-horizon.com/spm/spm.v1.min.js600.0 s48.1 KiB
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js86400.0 s102.4 KiB
ats.rlcdn.com/ats.js0.0 ms36.8 KiB
/js/current/dpm_pixel_min.js?aid=nbcu-3dcc5105-25e1-45bf-...0.0 ms31.6 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
pub.doubleverify.com/dvtag/24187061/DV1473088/pub.js900.0 s30.6 KiB
s.skimresources.com/js/96128X1573856.skimlinks.js3600.0 s20.2 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/jwpsrv.js900.0 s18.0 KiB
experiments.parsely.com/vip-experiments.js?apiKey=nbcnews.com30.0 s9.0 KiB
www.nbcnews.com/akam/13/4b859adc21600.0 s9.6 KiB
/_next/static/images/sports-badge-pill-1eb936e42cb92419d7...120.0 s5.6 KiB
cdn.cxense.com/cx.cce.js3600.0 s6.8 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/freewheel.js86400.0 s11.4 KiB
/dvtp_src.js900.0 s3.8 KiB
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cdn.cookielaw.org/consent/bf1dbc48-bdff-47f8-8677-c0917978a891/otSDKStub.js86400.0 s7.4 KiB
experience.tinypass.com/xbuilder/experience/load?aid=6jE6J2jZpu1800.0 s3.3 KiB
sb.scorecardresearch.com/beacon.js86400.0 s6.7 KiB
cdn.cookielaw.org/opt-out/otCCPAiab.js86400.0 s6.4 KiB
/vendor/02235bf8-0bf7-4a84-a64d-6fe4704e9579/lightbox_spe...60.0 s2.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC26c4cd8fdaaa42c...3600.0 s2.1 KiB
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pm-widget.taboola.com/nbcnews/load.js3600.0 s1.6 KiB
jssdkcdns.mparticle.com/js/v2/65ea0b28a73c4c4abd08599774d30799/mparticle.js3600.0 s1.6 KiB
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cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.6 KiB
tru.am/scripts/ta-pagesocial-sdk.js2419200.0 s11.0 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCd3c1a5e3ebff490...3600.0 s1.2 KiB
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/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC71893d03aab149a...3600.0 s467 B
/t/beacon?adn=13&ca=direct&pl=https%3A%2F%2Fwww.nbcnews.c...0.0 ms367 B
/p2?c1=19&c2=6035083&ns_ap_an=NBC%20News%20undefined&ns_a...0.0 ms298 B
p.skimresources.com/px.gif?ch=1&rn=2.65850167904562260.0 ms268 B
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/st?cijs=convusmp&ttype=45&cisd=convusmp&cipid=66361655&c...0.0 ms44 B
static.polarcdn.com/creative/creative.js10800.0 s0 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
/dvtp_src.js900.0 s0 B
/dvtp_src.js900.0 s0 B
/dvtp_src.js900.0 s0 B

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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: 1.0 s
URLTime Spent
nbcnews.com/1.0 s
www.nbcnews.com/0.0 ms

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.

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: 300 ms 1.9 MiB
URLTransfer SizeEst Savings
cdn.taboola.com/libtrc/nbcnews/loader.js333.0 KiB152.3 KiB
nodeassets.nbcnews.com/_next/static/chunks/5280-3dfb8cb044134438.js193.9 KiB111.8 KiB
nodeassets.nbcnews.com/_next/static/chunks/pages/_app-1e882dd18de681bf.js249.4 KiB105.2 KiB
/pagead/managed/js/gpt/m202604150101/pubads_impl.js?cb=31...189.2 KiB98.8 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/provider.hlsjs.js114.2 KiB95.0 KiB
cdn.tinypass.com/api/tinypass.min.js131.8 KiB80.5 KiB
/vendor/02235bf8-0bf7-4a84-a64d-6fe4704e9579/main.js?cb=0...116.3 KiB74.6 KiB
mssl.fwmrm.net/libs/adm/7.2.1/AdManager.js91.7 KiB74.0 KiB
nodeassets.nbcnews.com/_next/static/chunks/6d060570.7d8bba7953b3ffa9.js112.0 KiB71.1 KiB
cdn.doubleverify.com/dv-measurements9748.js94.2 KiB66.1 KiB
cdn.doubleverify.com/dv-measurements9748.js94.2 KiB66.1 KiB
cdn.doubleverify.com/dv-measurements9748.js94.2 KiB66.1 KiB
cdn.doubleverify.com/dv-measurements9748.js94.2 KiB65.7 KiB
nodeassets.nbcnews.com/_next/static/chunks/4856.2e24534c8d2feee5.js140.6 KiB64.4 KiB
static.polarcdn.com/creative/creative.js134.2 KiB60.5 KiB
static.polarcdn.com/creative/creative.js134.2 KiB60.4 KiB
nodeassets.nbcnews.com/_next/static/chunks/9aeb919a.7c4d76066591db8d.js59.4 KiB56.8 KiB
www.googletagmanager.com/gtag/js?id=DC-8168974129.3 KiB53.5 KiB
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js102.1 KiB53.4 KiB
client.aps.amazon-adsystem.com/publisher.js90.4 KiB51.9 KiB
nodeassets.nbcnews.com/_next/static/chunks/5359.52115157ab392ea0.js62.6 KiB39.0 KiB
nodeassets.nbcnews.com/_next/static/chunks/eedce643.be14d70cf650b4a4.js43.7 KiB35.1 KiB
ak.sail-horizon.com/spm/spm.v1.min.js47.7 KiB32.5 KiB
micro.rubiconproject.com/prebid/dynamic/24610.js46.1 KiB31.8 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.7 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.7 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/jwplayer.core.controls.js77.9 KiB29.8 KiB
nodeassets.nbcnews.com/_next/static/chunks/8286-a6f98da6162ec23c.js39.0 KiB27.1 KiB
nodeassets.nbcnews.com/_next/static/chunks/607-b8446445c2b3031e.js46.1 KiB26.2 KiB
mps.nbcuni.com/fetch/ext/load-nbcnews-bento.js?nowrite=jq65.3 KiB25.3 KiB
nodeassets.nbcnews.com/_next/static/chunks/main-a20bf94e5e380099.js42.8 KiB22.0 KiB
cdn.cxense.com/cx.js37.5 KiB21.8 KiB
ats.rlcdn.com/ats.js36.4 KiB20.7 KiB
nodeassets.nbcnews.com/_next/static/chunks/1687-f8d776d593cec93b.js25.2 KiB20.0 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
www.nbcnews.com/3.7 s101 ms14 ms
Unattributable2.5 s270 ms0.0 ms
nodeassets.nbcnews.com/_next/static/chunks/framework-d9b57ebce9e63786.js2.2 s1.6 s13 ms
nodeassets.nbcnews.com/_next/static/chunks/pages/_app-1e882dd18de681bf.js1.4 s894 ms81 ms
ssl.p.jwpcdn.com/player/v/8.30.1/jwplayer.core.controls.js1.3 s941 ms21 ms
/js/current/dpm_pixel_min.js?aid=nbcu-3dcc5105-25e1-45bf-...1.2 s893 ms7.7 ms
assets.adobedtm.com/launch-EN03682f66064449c8b87d78eae3e2fc57.min.js1.1 s750 ms284 ms
static.polarcdn.com/creative/creative.js1.1 s605 ms57 ms
/pagead/managed/js/gpt/m202604150101/pubads_impl.js?cb=31...1.1 s935 ms62 ms
cdn.taboola.com/libtrc/nbcnews/loader.js948 ms588 ms104 ms
cdn.tinypass.com/api/tinypass.min.js710 ms464 ms36 ms
cdn.cxense.com/cx.js587 ms240 ms15 ms
nodeassets.nbcnews.com/_next/static/chunks/4856.2e24534c8d2feee5.js471 ms240 ms50 ms
cdn.doubleverify.com/dv-measurements9748.js416 ms265 ms147 ms
nodeassets.nbcnews.com/_next/static/chunks/6d060570.7d8bba7953b3ffa9.js399 ms338 ms56 ms
/pagead/managed/js/activeview/current/ufs_web_display.js391 ms354 ms34 ms
mps.nbcuni.com/fetch/ext/load-nbcnews-bento.js?nowrite=jq375 ms317 ms35 ms
/vendor/02235bf8-0bf7-4a84-a64d-6fe4704e9579/main.js?cb=0...356 ms303 ms28 ms
nodeassets.nbcnews.com/_next/static/chunks/pages/front-6e4445eb3f6c315c.js345 ms342 ms1.9 ms
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js264 ms163 ms33 ms
cdn.doubleverify.com/dvtp_src.js257 ms191 ms5.9 ms
s.skimresources.com/js/96128X1573856.skimlinks.js252 ms242 ms3.6 ms
www.googletagmanager.com/gtag/js?id=DC-8168974187 ms157 ms24 ms
cdn.parsely.com/keys/nbcnews.com/p.js168 ms147 ms5.3 ms
client.aps.amazon-adsystem.com/publisher.js145 ms118 ms24 ms
nodeassets.nbcnews.com/_next/static/chunks/eedce643.be14d70cf650b4a4.js134 ms121 ms11 ms
nodeassets.nbcnews.com/_next/static/chunks/7360-13ac138756e9d1d3.js129 ms127 ms1.7 ms
nodeassets.nbcnews.com/_next/static/chunks/5359.52115157ab392ea0.js127 ms103 ms23 ms
nodeassets.nbcnews.com/_next/static/chunks/main-a20bf94e5e380099.js121 ms105 ms15 ms
vidstat.taboola.com/lite-unit/5.7.0/UnitFeedManagerMobile.min.js115 ms100 ms7.4 ms
www.nbcnews.com/akam/13/4b859adc110 ms96 ms3.7 ms
pub.doubleverify.com/dvtag/24187061/DV1473088/pub.js99 ms71 ms7.1 ms
mssl.fwmrm.net/libs/adm/7.2.1/AdManager.js90 ms56 ms33 ms
securepubads.g.doubleclick.net/tag/js/gpt.js67 ms59 ms7.2 ms
nodeassets.nbcnews.com/jwplayer/jwplayer-8.30.1/jwplayer.js64 ms37 ms7.5 ms
pm-widget.taboola.com/nbcnews/pmk-20220605.67.js62 ms53 ms6.7 ms
micro.rubiconproject.com/prebid/dynamic/24610.js59 ms42 ms17 ms
nodeassets.nbcnews.com/_next/static/chunks/5813.bfc161097986c0ea.js58 ms51 ms1.1 ms
ak.sail-horizon.com/spm/spm.v1.min.js57 ms47 ms10.0 ms
ssl.p.jwpcdn.com/player/v/8.30.1/provider.hlsjs.js56 ms29 ms27 ms
nodeassets.nbcnews.com/_next/static/css/2c518d910b28eb95.css54 ms0.0 ms0.0 ms
cdn.cookielaw.org/consent/bf1dbc48-bdff-47f8-8677-c0917978a891/otSDKStub.js54 ms51 ms1.6 ms
www.nbcnews.com/omweb-v1.js53 ms46 ms6.3 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 Evaluation13.5 s
Other5.7 s
Style & Layout2.2 s
Script Parsing & Compilation1.6 s
Rendering565 ms
Garbage Collection476 ms
Parse HTML & CSS429 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
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 31.0 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
NBC Select div.styles_wrapper__b539O > div.styles_wrapperTop__Rar3Q > h2.styles_title__Vyf10 > img.titleLogo
media-cldnry.s-nbcnews.com/image/upload/rockcms/2023-07/S-H-C-3e0612.png
Smoke rises behind palm trees and a McDonald's "Golden Arches" sign in Al-Hosh,… div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-760x428,f_auto,q_auto:best/rockcms/...
A body is removed on a gurney from the home of former Virginia Lt. Gov. Justin … div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-760x428,f_auto,q_auto:best/rockcms/...
People stand outside of a damaged building with a damaged car parked out front div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-760x428,f_auto,q_auto:best/rockcms/...
A split composite image of Joe Hathaway, left, and Analilia Meija div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-760x428,f_auto,q_auto:best/rockcms/...
Novo To Sell Weight-Loss Drug Wegovy Directly To Patients div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-760x428,f_auto,q_auto:best/rockcms/...
Logo for Subnav div.links-container > div.standard-logo-div > a > img.mobile-title-img
/image/upload/rockcms/2025-05/news-sports-horiz-combo-38e...
div.headline-item-container > div.standard-layout__badge > span.badge-label > img.styles_icon__tCG_L div.headline-item-container > div.standard-layout__badge > span.badge-label > img.styles_icon__tCG_L
/_next/static/images/sports-badge-pill-1eb936e42cb92419d7...
div.headline-item-container > div.standard-layout__badge > span.badge-label > img.styles_icon__tCG_L div.headline-item-container > div.standard-layout__badge > span.badge-label > img.styles_icon__tCG_L
/_next/static/images/sports-badge-pill-1eb936e42cb92419d7...
div.multistory-vv-card > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.multistory-vv-card > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.multistory-vv-card > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.multistory-vv-card > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.related-content-tease__headline > span.related-content-tease__badge-label > div.subscriber-badge > img div.related-content-tease__headline > span.related-content-tease__badge-label > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div > div.standard-layout__badge > div.subscriber-badge > img div > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg

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

Layout shift culprits
Optimize DOM size
LCP breakdown
Render blocking requests
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 18 user timings
Avoid long main-thread tasks 20 long tasks found
Avoid non-composited animations 1 animated element found
Network Requests
Network Round Trip Times 100 ms
Server Backend Latencies 1,400 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 100 ms
Avoid large layout shifts 9 layout shifts found
INP breakdown
85

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.share-inner > ul.share-ul > li.share-li > button.share-ex div.share-inner > ul.share-ul > li.share-li > button.share-ex

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share
div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share
div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share
div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share
div.styles_left__nP7eU > section.pkg > div.live-video-embed__block > a.live-video-embed__logo-link div.styles_left__nP7eU > section.pkg > div.live-video-embed__block > a.live-video-embed__logo-link
ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a
ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a
ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a
ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a
div.media > div.styles_multistory-media__XG0t_ > div.styles_media__dsFnw > a div.media > div.styles_multistory-media__XG0t_ > div.styles_media__dsFnw > a

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Live /  div.styles_left__nP7eU > section.pkg > div.live-video-embed__block > span.live-video-embed__eyebrow
NBCUniversal div.mediavoice-native-ad > div.plr-ad-ud > div.plr-wrapper-ud > div.plr_advertiser-ud

These are opportunities to improve the legibility of your content.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_mobile_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_mobile_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_mobile_disclosure_link

These items highlight common accessibility best practices.

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
NBC News' Matt Bradley on the major questions around Lebanon agreement div.styles_multistory-media__XG0t_ > div.styles_gridStackWrapper__Z_AMc > div.styles_gridStackWrapper__Z_AMc > div
Fairfax's children were home during the shootings and called 911 div.styles_playerWrapper__L5r1Y > div.styles_gridStackWrapper__Z_AMc > div.styles_gridStackWrapper__Z_AMc > div
Dangerous tornadoes rip across the Midwest div.styles_playerWrapper__L5r1Y > div.styles_gridStackWrapper__Z_AMc > div.styles_gridStackWrapper__Z_AMc > div
Steve Kornacki breaks down special election trends div.styles_multistory-media__XG0t_ > div.styles_gridStackWrapper__Z_AMc > div.styles_gridStackWrapper__Z_AMc > div
CEO says covering weight loss drugs led to millions in financial losses div.styles_playerWrapper__L5r1Y > div.styles_gridStackWrapper__Z_AMc > div.styles_gridStackWrapper__Z_AMc > div
SPONSORED / PATOLO div.videoCube > a.item-label-href > span.video-label-box > span.branding
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.
`button`, `link`, and `menuitem` elements have accessible names
ARIA attributes are used as specified for the element's role
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
Document has a `<title>` element
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
Links are distinguishable without relying on color.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
No element has a `[tabindex]` value greater than 0
Heading elements appear in a sequentially-descending order
Document has a main landmark.
Deprecated ARIA roles were not used
ARIA IDs are unique
Identical links have the same purpose.
`[accesskey]` values are unique
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
`<frame>` or `<iframe>` elements have a title
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
Select elements have associated label elements.
Skip links are focusable.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
`[lang]` attributes have a valid value
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Tables have different content in the summary attribute and `<caption>`.
All heading elements contain content.
Uses ARIA roles only on compatible elements
Image elements do not have `[alt]` attributes that are redundant text.
Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Unload event listeners are deprecated and will be removed.

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
Failed to load resource: the server responded with a status of 404 ()
Failed to load resource: the server responded with a status of 404 ()

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.

Uses HTTPS
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No issues in the `Issues` panel in Chrome Devtools
Ensure CSP is effective against XSS attacks
Use a strong HSTS policy
Ensure proper origin isolation with COOP
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
85

SEO

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

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Image for Taboola Advertising Unit div#rbox-h2m > div#internal_trc_3687818833 > div.videoCube > a.item-thumbnail-href
DACIA BIGSTER Intérieur spacieux Dacia | Sponsored div#rbox-h2m > div#internal_trc_3687818833 > div.videoCube > a.item-label-href
Image for Taboola Advertising Unit div#rbox-h2v > div#internal_trc_3481960790 > div.videoCube > a.item-thumbnail-href
DECATHLON / SPONSORED Entraînement complet haut du corps Plus de 10 positions, … div#rbox-h2v > div#internal_trc_3481960790 > div.videoCube > a.item-label-href
Image for Taboola Advertising Unit div#rbox-h2v > div#internal_trc_2306756265 > div.videoCube > a.item-thumbnail-href
DECATHLON / SPONSORED Débardeur & Legging pour vos futures séances Double promo… div#rbox-h2v > div#internal_trc_2306756265 > div.videoCube > a.item-label-href
Image for Taboola Advertising Unit div#rbox-h2v > div#internal_trc_1886417715 > div.videoCube > a.item-thumbnail-href
ALLIANZ AUTO / SPONSORED Petits rouleurs : les 3 formules d'Allianz pour ne plu… div#rbox-h2v > div#internal_trc_1886417715 > div.videoCube > a.item-label-href

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

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

51
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
79
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.
85
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.

1.60 s

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

2.70 s

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

411 ms

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

0.081

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

5.76 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.

10.37 s

Detailed Report

Audit breakdown by category with detailed findings.

51

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.

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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:34.812 source:map[column:50856 line:8 type:source-location url:https://nodeassets.nbcnews.com/jwplayer/jwplayer-8.30.1/jwplayer.js urlProvider:network]] map[reflowTime:26.42 source:map[column:174530 line:44 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.js urlProvider:network]] map[reflowTime:8.672 source:map[column:266165 line:44 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.js urlProvider:network]] map[reflowTime:22.148 source:map[column:463570 line:44 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.js urlProvider:network]] map[reflowTime:10.102 source:map[column:490234 line:44 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.js urlProvider:network]] map[reflowTime:1.908 source:map[column:159181 line:44 type:source-location url:https://cdn.taboola.com/libtrc/nbcnews/loader.js urlProvider:network]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
Image: Detainees inside an immigration detention facility. div.storyline-media > a > picture.teasePicture > img
/image/upload/t_focal-1000x667,f_auto,q_auto:best/rockcms...211.8 KiB188.8 KiB
People stand outside of a damaged building with a damaged car parked out front div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-860x484,f_auto,q_auto:best/rockcms/...98.4 KiB79.0 KiB
div.storyline-media > a > picture.teasePicture > img div.storyline-media > a > picture.teasePicture > img
/image/upload/t_focal-1000x667,f_auto,q_auto:best/rockcms...83.9 KiB66.1 KiB
Robert F. Kennedy, Jr. div.storyline-media > a > picture.teasePicture > img
/image/upload/t_focal-1000x667,f_auto,q_auto:best/rockcms...60.5 KiB47.7 KiB
div#gamma-accessibility-wrapper > div#jwplayer-1 > div.jw-wrapper > div.jw-preview div#gamma-accessibility-wrapper > div#jwplayer-1 > div.jw-wrapper > div.jw-preview
/image/upload/t_focal-860x484,f_auto,q_auto:best/rockcms/...114.3 KiB46.5 KiB
div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.background > div.bg-background > div.bg-background__picture div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.background > div.bg-background > div.bg-background__picture
/image/upload/t_fit-360w,f_avif,q_auto:eco,dpr_2/rockcms/...193.0 KiB42.9 KiB
div#gamma-accessibility-wrapper > div#jwplayer-0 > div.jw-wrapper > div.jw-preview div#gamma-accessibility-wrapper > div#jwplayer-0 > div.jw-wrapper > div.jw-preview
/image/upload/t_focal-860x484,f_auto,q_auto:best/rockcms/...108.3 KiB40.6 KiB
A split composite image of Joe Hathaway, left, and Analilia Meija div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-860x484,f_auto,q_auto:best/rockcms/...52.1 KiB33.5 KiB
/image/upload/q_auto:eco/f_auto/newsgroup-logos/nbcnewsno...19.4 KiB19.0 KiB
Randy Slaughter at his apartment in Bryan, Texas. div.styles_media__dsFnw > a > picture.teasePicture > img
/image/upload/t_focal-321x214,f_auto,q_auto:best/rockcms/...20.2 KiB17.9 KiB
President Trump Announces TrumpRx From The White House div.styles_media__dsFnw > a > picture.teasePicture > img
/image/upload/t_focal-321x214,f_auto,q_auto:best/rockcms/...16.0 KiB13.6 KiB
NBC Select div.styles_wrapper__b539O > div.styles_wrapperTop__Rar3Q > h2.styles_title__Vyf10 > img.titleLogo
media-cldnry.s-nbcnews.com/image/upload/rockcms/2023-07/S-H-C-3e0612.png9.4 KiB9.4 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-11-DIV
nodeLabel: div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.background > div.bg-background > div.bg-background__picture
path: 1,HTML,1,BODY,1,DIV,0,DIV,2,DIV,0,DIV,1,DIV,0,DIV,0,SECTION,1,DIV,0,DIV,3,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV
selector: div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.background > div.bg-background > div.bg-background__picture
snippet: <div class="bg-background__picture w-100 h-100" style="background-image: url(&quot;https://media-cldnry.s-nbcnews.com/image/upload/t_fi…&quot;);" data-testid="background-image">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
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

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
assets.adobedtm.com/launch-EN03682f66064449c8b87d78eae3e2fc57.min.js3600.0 s260.5 KiB
static.polarcdn.com/creative/creative.js10800.0 s134.7 KiB
mssl.fwmrm.net/libs/adm/7.2.1/AdManager.js0.0 ms92.1 KiB
cdn.tinypass.com/api/tinypass.min.js14400.0 s132.2 KiB
c.amazon-adsystem.com/aax2/apstag.js3600.0 s90.8 KiB
client.aps.amazon-adsystem.com/publisher.js3600.0 s90.8 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
ak.sail-horizon.com/spm/spm.v1.min.js600.0 s48.1 KiB
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js86400.0 s102.4 KiB
ats.rlcdn.com/ats.js0.0 ms36.8 KiB
/js/current/dpm_pixel_min.js?aid=nbcu-3dcc5105-25e1-45bf-...0.0 ms31.6 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
pub.doubleverify.com/dvtag/24187061/DV1473088/pub.js900.0 s30.6 KiB
s.skimresources.com/js/96128X1573856.skimlinks.js3600.0 s20.2 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/jwpsrv.js900.0 s18.0 KiB
experiments.parsely.com/vip-experiments.js?apiKey=nbcnews.com30.0 s8.9 KiB
www.nbcnews.com/akam/13/4b859adc21600.0 s9.6 KiB
/_next/static/images/sports-badge-pill-1eb936e42cb92419d7...37.0 s5.6 KiB
cdn.cxense.com/cx.cce.js3600.0 s6.8 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/freewheel.js86400.0 s11.2 KiB
/dvtp_src.js900.0 s3.8 KiB
/logos/17e5cb00-ad90-47f5-a58d-77597d9d2c16/d44e374b-e570...86400.0 s8.2 KiB
cdn.cookielaw.org/consent/bf1dbc48-bdff-47f8-8677-c0917978a891/otSDKStub.js86400.0 s7.4 KiB
experience.tinypass.com/xbuilder/experience/load?aid=6jE6J2jZpu1800.0 s3.3 KiB
sb.scorecardresearch.com/beacon.js86400.0 s6.7 KiB
cdn.cookielaw.org/opt-out/otCCPAiab.js86400.0 s6.4 KiB
/vendor/02235bf8-0bf7-4a84-a64d-6fe4704e9579/lightbox_spe...60.0 s2.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC26c4cd8fdaaa42c...3600.0 s2.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCfb2ffadfe0b7483...3600.0 s1.8 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCea6783b9270d41a...3600.0 s1.6 KiB
pm-widget.taboola.com/nbcnews/load.js3600.0 s1.6 KiB
jssdkcdns.mparticle.com/js/v2/65ea0b28a73c4c4abd08599774d30799/mparticle.js3600.0 s1.6 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC29629d570823441...3600.0 s1.5 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC10ae6175ef274cc...3600.0 s1.3 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.6 KiB
tru.am/scripts/ta-pagesocial-sdk.js2419200.0 s10.9 KiB
/z9gd/02235bf8-0bf7-4a84-a64d-6fe4704e9579/www.nbcnews.co...0.0 ms1008 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCd3c1a5e3ebff490...3600.0 s1.2 KiB
/admantx/service?request=%7B%22decorator%22%3A%22template...0.0 ms907 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC852bad559c73478...3600.0 s1.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCa00981fa767f42d...3600.0 s1.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC6b0f30ed3d5f420...3600.0 s1.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCb0cc5e6770e348c...3600.0 s1.1 KiB
pagead2.googlesyndication.com/pagead/js/r20260415/r20110914/abg_lite_fy2021.js1209600.0 s8.4 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC20a98d1b07d24e9...3600.0 s1.0 KiB
platform.iteratehq.com/loader.js1800.0 s947 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCb3cedaeced264fb...3600.0 s937 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC8106a0550d5e47a...3600.0 s912 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC5253be5ca58840b...3600.0 s899 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC97b7286119dc4f2...3600.0 s863 B
/z9g/digibox.gif?c=1776361202394&h=www.nbcnews.com&e=p&u=...0.0 ms682 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC08ff7f657938422...3600.0 s844 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC361a3633d07a4f0...3600.0 s822 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC97e2a316b148435...3600.0 s788 B
config.aps.amazon-adsystem.com/configs/32193600.0 s782 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC225ac9d6a48f4a2...3600.0 s773 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC37bea0527d27441...3600.0 s753 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCff54c0fbb15d49a...3600.0 s739 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC7a39031b5cc9404...3600.0 s708 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCd2a0773d48a54a7...3600.0 s696 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCa006cee2dce7475...3600.0 s688 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCf845abe17eca4a6...3600.0 s679 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCabd3da92950c405...3600.0 s679 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCd92397a341d5401...3600.0 s664 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC6e35d03b014c4af...3600.0 s652 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC87fe9f9e0ba4497...3600.0 s644 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC8a9f77140f52412...3600.0 s597 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCdaa5cfa2002343c...3600.0 s576 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC2b2ab570b1ff47a...3600.0 s556 B
/Repo/rep.gif?ver=3.3.0&typ=pgv&rnd=mo1rldllxxf0r4ot&sid=...0.0 ms414 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC71893d03aab149a...3600.0 s465 B
/t/beacon?adn=13&ca=direct&pl=https%3A%2F%2Fwww.nbcnews.c...0.0 ms367 B
/p2?c1=19&c2=6035083&ns_ap_an=NBC%20News%20undefined&ns_a...0.0 ms297 B
p.skimresources.com/px.gif?ch=2&rn=1.29477279919595610.0 ms268 B
geolocation.onetrust.com/cookieconsentpub/v1/geo/location/dnsfeed0.0 ms244 B
/px/?rand=1776361199500&plid=72acd475-2d76-454d-8e93-a44c...0.0 ms229 B
/pagead/js/r20260415/r20110914/client/window_focus_fy2021.js1209600.0 s1.2 KiB
p.skimresources.com/px.gif?ch=1&rn=1.29477279919595610.0 ms94 B
/st?cijs=convusmp&ttype=45&cisd=convusmp&cipid=66361655&c...0.0 ms43 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
pagead2.googlesyndication.com/pagead/js/r20260415/r20110914/abg_lite_fy2021.js1209600.0 s0 B
/dvtp_src.js900.0 s0 B
/dvtp_src.js900.0 s0 B
/pagead/js/r20260415/r20110914/client/window_focus_fy2021.js1209600.0 s0 B

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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: 719 ms
URLTime Spent
nbcnews.com/719 ms
www.nbcnews.com/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.

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: 40 ms 1.8 MiB
URLTransfer SizeEst Savings
cdn.taboola.com/libtrc/nbcnews/loader.js334.9 KiB155.2 KiB
nodeassets.nbcnews.com/_next/static/chunks/5280-3dfb8cb044134438.js193.9 KiB111.8 KiB
nodeassets.nbcnews.com/_next/static/chunks/pages/_app-1e882dd18de681bf.js249.4 KiB105.0 KiB
/pagead/managed/js/gpt/m202604130101/pubads_impl.js187.5 KiB94.1 KiB
cdn.tinypass.com/api/tinypass.min.js131.7 KiB80.5 KiB
mssl.fwmrm.net/libs/adm/7.2.1/AdManager.js91.7 KiB74.0 KiB
/vendor/02235bf8-0bf7-4a84-a64d-6fe4704e9579/main.js?cb=0...116.2 KiB71.5 KiB
nodeassets.nbcnews.com/_next/static/chunks/6d060570.7d8bba7953b3ffa9.js112.0 KiB71.1 KiB
cdn.doubleverify.com/dv-measurements9748.js94.2 KiB66.1 KiB
cdn.doubleverify.com/dv-measurements9748.js94.2 KiB66.1 KiB
cdn.doubleverify.com/dv-measurements9748.js94.2 KiB66.1 KiB
nodeassets.nbcnews.com/_next/static/chunks/4856.2e24534c8d2feee5.js140.6 KiB64.4 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/provider.hlsjs.js114.2 KiB64.1 KiB
static.polarcdn.com/creative/creative.js134.2 KiB60.1 KiB
nodeassets.nbcnews.com/_next/static/chunks/9aeb919a.7c4d76066591db8d.js59.4 KiB56.8 KiB
www.googletagmanager.com/gtag/js?id=DC-8168974129.3 KiB54.9 KiB
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js102.1 KiB53.3 KiB
c.amazon-adsystem.com/aax2/apstag.js90.4 KiB52.8 KiB
client.aps.amazon-adsystem.com/publisher.js90.4 KiB43.7 KiB
nodeassets.nbcnews.com/_next/static/chunks/5359.52115157ab392ea0.js62.6 KiB39.0 KiB
nodeassets.nbcnews.com/_next/static/chunks/eedce643.be14d70cf650b4a4.js43.7 KiB35.1 KiB
ak.sail-horizon.com/spm/spm.v1.min.js47.7 KiB32.5 KiB
micro.rubiconproject.com/prebid/dynamic/24610.js46.1 KiB31.8 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.6 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.6 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.6 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/jwplayer.core.controls.js77.9 KiB28.5 KiB
nodeassets.nbcnews.com/_next/static/chunks/8286-a6f98da6162ec23c.js39.0 KiB27.1 KiB
nodeassets.nbcnews.com/_next/static/chunks/607-b8446445c2b3031e.js46.1 KiB26.1 KiB
mps.nbcuni.com/fetch/ext/load-nbcnews-bento.js?nowrite=jq65.2 KiB23.8 KiB
nodeassets.nbcnews.com/_next/static/chunks/main-a20bf94e5e380099.js42.8 KiB22.0 KiB
cdn.cxense.com/cx.js37.5 KiB21.8 KiB
ats.rlcdn.com/ats.js36.4 KiB20.7 KiB
nodeassets.nbcnews.com/_next/static/chunks/1687-f8d776d593cec93b.js25.2 KiB20.0 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
www.nbcnews.com/689 ms34 ms3.9 ms
ssl.p.jwpcdn.com/player/v/8.30.1/provider.hlsjs.js503 ms385 ms11 ms
Unattributable491 ms107 ms0.0 ms
/pagead/managed/js/gpt/m202604130101/pubads_impl.js440 ms371 ms25 ms
nodeassets.nbcnews.com/_next/static/chunks/framework-d9b57ebce9e63786.js386 ms320 ms2.4 ms
cdn.taboola.com/libtrc/nbcnews/loader.js320 ms185 ms26 ms
nodeassets.nbcnews.com/_next/static/chunks/pages/_app-1e882dd18de681bf.js308 ms192 ms16 ms
assets.adobedtm.com/launch-EN03682f66064449c8b87d78eae3e2fc57.min.js231 ms147 ms73 ms
/pagead/managed/js/activeview/current/ufs_web_display.js179 ms153 ms18 ms
static.polarcdn.com/creative/creative.js164 ms92 ms9.6 ms
nodeassets.nbcnews.com/_next/static/chunks/4856.2e24534c8d2feee5.js138 ms87 ms11 ms
cdn.tinypass.com/api/tinypass.min.js119 ms89 ms12 ms
nodeassets.nbcnews.com/_next/static/chunks/6d060570.7d8bba7953b3ffa9.js108 ms100 ms6.8 ms
mps.nbcuni.com/fetch/ext/load-nbcnews-bento.js?nowrite=jq107 ms85 ms11 ms
nodeassets.nbcnews.com/_next/static/chunks/7360-13ac138756e9d1d3.js100 ms98 ms0.7 ms
nodeassets.nbcnews.com/_next/static/chunks/pages/front-6e4445eb3f6c315c.js96 ms95 ms0.5 ms
s.skimresources.com/js/96128X1573856.skimlinks.js81 ms75 ms3.7 ms
cdn.doubleverify.com/dv-measurements9748.js77 ms54 ms23 ms
cdn.doubleverify.com/dvtp_src.js66 ms60 ms3.4 ms
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js64 ms38 ms8.5 ms
/vendor/02235bf8-0bf7-4a84-a64d-6fe4704e9579/main.js?cb=0...56 ms20 ms7.4 ms
client.aps.amazon-adsystem.com/publisher.js55 ms32 ms6.0 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 Evaluation3.5 s
Other832 ms
Style & Layout603 ms
Script Parsing & Compilation424 ms
Parse HTML & CSS124 ms
Rendering111 ms
Garbage Collection88 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
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 31.0 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
NBC Select div.styles_wrapper__b539O > div.styles_wrapperTop__Rar3Q > h2.styles_title__Vyf10 > img.titleLogo
media-cldnry.s-nbcnews.com/image/upload/rockcms/2023-07/S-H-C-3e0612.png
Smoke rises behind palm trees and a McDonald's "Golden Arches" sign in Al-Hosh,… div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-860x484,f_auto,q_auto:best/rockcms/...
A split composite image of Joe Hathaway, left, and Analilia Meija div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-860x484,f_auto,q_auto:best/rockcms/...
A body is removed on a gurney from the home of former Virginia Lt. Gov. Justin … div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-860x484,f_auto,q_auto:best/rockcms/...
People stand outside of a damaged building with a damaged car parked out front div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-860x484,f_auto,q_auto:best/rockcms/...
Novo To Sell Weight-Loss Drug Wegovy Directly To Patients div.styles_gridStackWrapper__Z_AMc > div > picture > img
/image/upload/t_focal-860x484,f_auto,q_auto:best/rockcms/...
Logo for Subnav div.links-container > div.standard-logo-div > a > img.desktop-title-img
/image/upload/rockcms/2025-05/news-sports-horiz-combo-38e...
div.headline-item-container > div.standard-layout__badge > span.badge-label > img.styles_icon__tCG_L div.headline-item-container > div.standard-layout__badge > span.badge-label > img.styles_icon__tCG_L
/_next/static/images/sports-badge-pill-1eb936e42cb92419d7...
div.headline-item-container > div.standard-layout__badge > span.badge-label > img.styles_icon__tCG_L div.headline-item-container > div.standard-layout__badge > span.badge-label > img.styles_icon__tCG_L
/_next/static/images/sports-badge-pill-1eb936e42cb92419d7...
div.multistory-vv-card > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.multistory-vv-card > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.multistory-vv-card > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.multistory-vv-card > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.related-content-tease__headline > span.related-content-tease__badge-label > div.subscriber-badge > img div.related-content-tease__headline > span.related-content-tease__badge-label > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div > div.standard-layout__badge > div.subscriber-badge > img div > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img div.styles_vertVideoCardWrapper__ie_iW > div.styles_vertVideoCardsTwoByThreeContainer__DOkDK > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg
div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img div.headline-item-container > div.standard-layout__badge > div.subscriber-badge > img
media-cldnry.s-nbcnews.com/image/upload/rockcms/2026-01/asterisk-43f04b.svg

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

Layout shift culprits
Optimize DOM size
LCP breakdown
Render blocking requests
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 18 user timings
Avoid long main-thread tasks 18 long tasks found
Avoid non-composited animations 1 animated element found
Network Requests
Network Round Trip Times 170 ms
Server Backend Latencies 540 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 70 ms
Avoid large layout shifts 10 layout shifts found
INP breakdown
79

Accessibility

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

ARIA

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
POLITICS U.S. NEWS WORLD LOCAL NEW YORK LOS ANGELES CHICAGO DALLAS-FORT WORTH P… div.local-inner > div.local-wrap > div.shortcuts > ul.shortcuts-list

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
LOCAL NEW YORK LOS ANGELES CHICAGO DALLAS-FORT WORTH PHILADELPHIA WASHINGTON, D… div.local-wrap > div.shortcuts > ul.shortcuts-list > li.shortcuts-list-item

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

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.share-inner > ul.share-ul > li.share-li > button.share-ex div.share-inner > ul.share-ul > li.share-li > button.share-ex
div > div.styles_vertVideoScrollWrapper__k9oxs > div.styles_vertVideoNextBtnContainer__P5E08 > button.styles_vertVideoPageBtnNext__SUbof div > div.styles_vertVideoScrollWrapper__k9oxs > div.styles_vertVideoNextBtnContainer__P5E08 > button.styles_vertVideoPageBtnNext__SUbof

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share
div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share
div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share
ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a
ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a
ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a
ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a ul.styles_items__qlCXA > li.styles_item__cdOVo > div.styles_imageWrapper__RrQhH > a
div.media > div.styles_multistory-media__XG0t_ > div.styles_media__dsFnw > a div.media > div.styles_multistory-media__XG0t_ > div.styles_media__dsFnw > a

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Advertisement div#__next > div#content > div.header-and-footer--banner-ad > p.ad-placeholder
Live /  div.package-grid__column > section.pkg > div.live-video-embed__block > span.live-video-embed__eyebrow

These are opportunities to improve the legibility of your content.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link
SPONSORED span.video-label-box > span.branding > div.logoDiv > a.trc_desktop_disclosure_link

These items highlight common accessibility best practices.

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
NBC News' Matt Bradley on the major questions around Lebanon agreement div.styles_multistory-media__XG0t_ > div.styles_gridStackWrapper__Z_AMc > div.styles_gridStackWrapper__Z_AMc > div
Fairfax's children were home during the shootings and called 911 div.styles_playerWrapper__L5r1Y > div.styles_gridStackWrapper__Z_AMc > div.styles_gridStackWrapper__Z_AMc > div
Dangerous tornadoes rip across the Midwest div.styles_playerWrapper__L5r1Y > div.styles_gridStackWrapper__Z_AMc > div.styles_gridStackWrapper__Z_AMc > div
Steve Kornacki breaks down special election trends div.styles_multistory-media__XG0t_ > div.styles_gridStackWrapper__Z_AMc > div.styles_gridStackWrapper__Z_AMc > div
CEO says covering weight loss drugs led to millions in financial losses div.styles_playerWrapper__L5r1Y > div.styles_gridStackWrapper__Z_AMc > div.styles_gridStackWrapper__Z_AMc > div
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]`s are contained by their required parent element
`[role]` values are valid
`[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.
`button`, `link`, and `menuitem` elements have accessible names
ARIA attributes are used as specified for the element's role
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
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.
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
Heading elements appear in a sequentially-descending order
Document has a main landmark.
Deprecated ARIA roles were not used
ARIA IDs are unique
Identical links have the same purpose.
`[accesskey]` values are unique
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
No form fields have multiple labels
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
Select elements have associated label elements.
Skip links are focusable.
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.

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
Failed to load resource: the server responded with a status of 404 ()
Failed to load resource: the server responded with a status of 404 ()

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.

Uses HTTPS
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No issues in the `Issues` panel in Chrome Devtools
Ensure CSP is effective against XSS attacks
Use a strong HSTS policy
Ensure proper origin isolation with COOP
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
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SEO

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

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Image for Taboola Advertising Unit div#rbox-h2m > div#internal_trc_64165024 > div.videoCube > a.item-thumbnail-href
Renault Twingo E-Tech électrique Un design joyeux disponible en 4 couleurs dist… div#rbox-h2m > div#internal_trc_64165024 > div.videoCube > a.item-label-href
Image for Taboola Advertising Unit div#rbox-h2v > div#internal_trc_7644798954 > div.videoCube > a.item-thumbnail-href
DECATHLON / SPONSORED Débardeur & Legging pour vos futures séances Double promo… div#rbox-h2v > div#internal_trc_7644798954 > div.videoCube > a.item-label-href
Image for Taboola Advertising Unit div#rbox-h2v > div#internal_trc_8471612168 > div.videoCube > a.item-thumbnail-href
VOLVO / SPONSORED VOLVO EX30 : Bénéficiez de 3 mois de loyer* et d’assurance** … div#rbox-h2v > div#internal_trc_8471612168 > div.videoCube > a.item-label-href
Image for Taboola Advertising Unit div#rbox-h2v > div#internal_trc_292446870 > div.videoCube > a.item-thumbnail-href
DECATHLON / SPONSORED Home Gym 900 : la machine pour progresser sans compromis … div#rbox-h2v > div#internal_trc_292446870 > div.videoCube > a.item-label-href
Image for Taboola Advertising Unit div#rbox-h2v > div#internal_trc_6792822768 > div.videoCube > a.item-thumbnail-href
VOLVO / SPONSORED Découvrez notre offre sur le Volvo EX30 100% électrique 3 moi… div#rbox-h2v > div#internal_trc_6792822768 > div.videoCube > a.item-label-href

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

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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