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Audit Complete

Results for https://nbclosangeles.com

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Spain Spain · Madrid Completed: Apr 22, 2026 20:34 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 21.6s 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

WordPress · 570 peers
You 70
·
Avg 74
At average
0 50 100
Better than 4% of WordPress sites See full WordPress benchmark →
core-js · 1239 peers
You 70
·
Avg 72
At average
0 50 100
Better than 14% of core-js sites See full core-js benchmark →

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

No Content-Security-Policy header found

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

Security › Content Security Policy
3

Page weighs 20.4 MB (6.1 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget
4

1 image-in-link without alt text

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

Accessibility › Alt Text Quality
5

1 link(s) with no accessible text

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

Accessibility › Link & Button Quality
View fix priority matrix

Fix Priority Matrix

5 findings

Quick Wins

2

High impact, low effort — start here.

Strategic

3

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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<a href="https://beavercheck.com/results/77543e4f-65f0-4aef-903e-632a93f1c1fd"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fnbclosangeles.com" alt="BeaverCheck Score"></a>
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What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 21.6s 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.

2 security gaps detected — browsers may warn visitors about your site.
Your LCP is 21.6s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.
2 accessibility issues exclude users who rely on assistive technology.

Conversion Barriers

4 critical 1 warning

5 barrier(s) likely increasing bounce by ~31%.

Speed (2)

Page takes 21.6s to load

+12% bounce

Users abandon at ~3s — you're 19.1s over the 2.5s threshold

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

Page feels frozen for 4.6s

+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 (1)

No Content-Security-Policy header

+1% bounce

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

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

Usability (1)

5 form field(s) without a label

+6% bounce

Screen readers skip unlabeled fields; autofill can't identify them; checkout abandonment spikes

Fix: Associate every input with a visible <label for="…">; add autocomplete attributes

Navigation (1)

7 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

$600 investment → $1.52/month returns + USD 157,500 risk avoided

Payback period: > 2 years First-year ROI: -97%

Investment

$600

6h · 5 findings

Monthly returns

$1.52 /mo

~$18 / year

  • Bandwidth savings $1.52

Regulatory risk avoided

USD 157,500

if kept compliant

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

$100 — 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

$600

6.0 developer hours at $100/hr

Based on United States rates ($100/hr)

Quick wins
$100 2 fixes in ~60 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

~$157,518 / 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
  • 4 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

+7 more

Bandwidth Waste

$1.52 /mo

19034.4 MB/mo × 0.080 USD/GB

  • Optimize transfer: save ~1.9 MB per page load
    Saves $1.52/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

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

25
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
82
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience.

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

10.30 s

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

21.58 s

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

4.59 s

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

0.005

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

14.98 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.

35.73 s

Detailed Report

Audit breakdown by category with detailed findings.

25

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

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

Learn more

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

Source: Google web.dev / Lighthouse

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff53200.0 s420.2 KiB
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1600.0 s210.3 KiB
native.sharethrough.com/assets/sfp.js3600.0 s126.7 KiB
/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff62643.0 s187.2 KiB
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest39873.0 s157.5 KiB
widgets-blue.media.weather.com/wxwidget.loader.js?cid=36936287286400.0 s157.5 KiB
assets.adobedtm.com/a2ef59fba8e9/3ba8c6b033ff/launch-6a742ce4ddf5.min.js3600.0 s68.9 KiB
assets.adobedtm.com/ddcf247e4bf5/82484060cd13/launch-7d75747d0373.min.js3600.0 s65.0 KiB
ak.sail-horizon.com/spm/spm.v1.min.js?ver=202617600.0 s48.1 KiB
/widgets/wxwidget.map.js?cid=369362872&memberid=1470&mapi...86400.0 s92.5 KiB
cdn.branch.io/branch-latest.min.js300.0 s23.5 KiB
js-sec.indexww.com/ht/p/185796-256714881512110.js14400.0 s32.6 KiB
sb.scorecardresearch.com/internal-c2/default/streamingtag_plugin_jwplayer.js86400.0 s53.4 KiB
static.criteo.net/js/ld/publishertag.js86400.0 s47.6 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/jwpsrv.js900.0 s18.0 KiB
c2.taboola.com/nr/nbcots-knbc/newsroom.js14400.0 s17.5 KiB
/2026/04/lax-people-mover-2026-04-22-072418.png?resize=85...86400.0 s27.3 KiB
/chunks/wxwidget.mapDefaultLayout.js?v=4e77d53b1e6b2a3178a086400.0 s27.1 KiB
sb.scorecardresearch.com/beacon.js86400.0 s6.7 KiB
/js/v2/us1-36d67c9e4d591d4bb1bc1fa6c82ffcb9/mparticle.js?...3600.0 s1.6 KiB
/_r?sdk=web2.87.1&branch_key=key_live_eo0T7DsCQTeDDwuby25...0.0 ms664 B
widgets-blue.media.weather.com/static/img/common/icons/25_white/radar.png25895.0 s872 B
/p?c1=2&c2=6035083&ns_type=hidden&ns_st_sv=6.3.0.180917&n...0.0 ms300 B

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:75.274 source:map[column:423534 line:46 type:source-location url:https://cdn.taboola.com/libtrc/nbcots-network/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
XUMO_NBC_LOS_ANGELES_FAST_STREAM img.player__poster
/2024/05/NBC-Los-Angeles-FAST-thumbnail-as-of-6.3.24.png?...311.6 KiB299.0 KiB
Signs wishing a speedy recovery to a man injured in an E motorcycle collision a… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/e-motorcycle-lake-forest-crash-signs-2026-04-22-...83.7 KiB81.7 KiB
div#homepage > div#template-hero > div.hero-background > img.hero-background__img div#homepage > div#template-hero > div.hero-background > img.hero-background__img
/2019/09/LA_aerial-1-1.png?fit=2060%2C847&quality=85&stri...54.3 KiB41.7 KiB
ICE agents in masks in San Francisco. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/06/ice-masks-0616-e1750082543157.jpg?quality=85&str...36.3 KiB35.2 KiB
LAX People Mover begins test runs div.video-module__column > div.video-module__video > div.video-playlist__placeholder > img
/2026/04/47633047482-1080pnbcstations.jpg?quality=85&stri...37.3 KiB30.1 KiB
The SkyLink Automated People Mover train is pictured April 22, 2026 at LAX. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/lax-people-mover-2026-04-22-072418.png?resize=85...26.9 KiB21.8 KiB
WASHINGTON, DC – DECEMBER 03: The FIFA World Cup Trophy is seen during the Comm… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/12/TLMD-copa-mundial.jpg?quality=85&strip=all&resiz...26.5 KiB21.4 KiB
div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo
/2019/09/LA_On_Light@3x-1.png?fit=309%2C120&quality=85&st...15.1 KiB14.4 KiB
FILE a CHP patrol car on an empty road. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2019/09/CHP-generic-patrol-car-road-0815.jpg?quality=85&...17.1 KiB13.8 KiB
Celeste Rivas Hernandez is pictured. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/celeste-rivas-hernandez-d4vd-murder-2026-04-20-0...16.8 KiB13.6 KiB
Watch div#home-fast-player > div.hp-livestream__title-container > div.hp-livestream__meta > img.hp-livestream__fast-logo
media.nbclosangeles.com/2024/04/LA-web@3x.png?fit=838%2C72&quality=85&strip=all4.8 KiB4.8 KiB

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
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

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: 752 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

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
ssl.p.jwpcdn.com/player/v/8.30.1/jwplayer.core.js7.2 s538 ms11 ms
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff3.0 s2.4 s191 ms
Unattributable1.6 s499 ms0.0 ms
www.nbclosangeles.com/1.1 s80 ms15 ms
ssl.p.jwpcdn.com/player/v/8.30.1/provider.hlsjs.js892 ms676 ms31 ms
cdn.taboola.com/libtrc/nbcots-network/loader.js727 ms248 ms134 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js583 ms490 ms54 ms
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1473 ms337 ms99 ms
widgets-blue.media.weather.com/wxwidget.loader.js?cid=369362872299 ms178 ms74 ms
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest293 ms170 ms60 ms
/wp-content/themes/nbc-station/static/video/videoHeartbea...253 ms212 ms13 ms
/widgets/wxwidget.map.js?cid=369362872&memberid=1470&mapi...249 ms202 ms42 ms
/chunks/wxwidget.mapDefaultLayout.js?v=4e77d53b1e6b2a3178a0224 ms180 ms15 ms
static.criteo.net/js/ld/publishertag.js198 ms173 ms12 ms
/wp-content/themes/nbc-station/client/build/js/home.5b3b6...167 ms128 ms8.5 ms
assets.adobedtm.com/a2ef59fba8e9/3ba8c6b033ff/launch-6a742ce4ddf5.min.js164 ms114 ms19 ms
/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff143 ms19 ms78 ms
assets.adobedtm.com/ddcf247e4bf5/82484060cd13/launch-7d75747d0373.min.js139 ms115 ms22 ms
/wp-content/themes/nbc-station/static/video/jwplayer/jwpl...112 ms98 ms9.5 ms
/_r?sdk=web2.87.1&branch_key=key_live_eo0T7DsCQTeDDwuby25...110 ms89 ms1.1 ms
/extensions/EPb56e12d7054b4acea984e91c910051cc/AppMeasure...103 ms98 ms0.8 ms
/wp-content/themes/nbc-station/client/build/js/weatherCon...102 ms83 ms2.1 ms
native.sharethrough.com/assets/sfp.js90 ms45 ms43 ms
ak.sail-horizon.com/spm/spm.v1.min.js?ver=20261784 ms70 ms13 ms
www.googletagservices.com/tag/js/gpt.js80 ms70 ms9.9 ms
js-sec.indexww.com/ht/p/185796-256714881512110.js77 ms44 ms9.6 ms
micro.rubiconproject.com/prebid/dynamic/24610.js70 ms43 ms26 ms
sb.scorecardresearch.com/c2/plugins/streamingtag_plugin_jwplayer.js?ver=1.0.254 ms30 ms24 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 Evaluation7.7 s
Other7.6 s
Style & Layout1.4 s
Script Parsing & Compilation1.1 s
Rendering787 ms
Garbage Collection271 ms
Parse HTML & CSS227 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 3.0 KiB
URLTransfer SizeEst Savings
/wp-content/themes/nbc-station/static/video/videoHeartbea...5.7 KiB3.0 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
LAX People Mover begins test runs div.video-module__column > div.video-module__video > div.video-playlist__placeholder > img
/2026/04/47633047482-1080pnbcstations.jpg?quality=85&stri...
Celeste Rivas Hernandez is pictured. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/celeste-rivas-hernandez-d4vd-murder-2026-04-20-0...
FILE a CHP patrol car on an empty road. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2019/09/CHP-generic-patrol-car-road-0815.jpg?quality=85&...
The SkyLink Automated People Mover train is pictured April 22, 2026 at LAX. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/lax-people-mover-2026-04-22-072418.png?resize=85...
WASHINGTON, DC – DECEMBER 03: The FIFA World Cup Trophy is seen during the Comm… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/12/TLMD-copa-mundial.jpg?quality=85&strip=all&resiz...
Watch div#home-fast-player > div.hp-livestream__title-container > div.hp-livestream__meta > img.hp-livestream__fast-logo
media.nbclosangeles.com/2024/04/LA-web@3x.png?fit=838%2C72&quality=85&strip=all
div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo
/2019/09/LA_On_Light@3x-1.png?fit=309%2C120&quality=85&st...
Betty Yee talks to reporters at the Record Searchlight on Friday, Aug. 15, 2025. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Child care a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Los Angeles Lakers center Deandre Ayton (5) reacts on the court after a three-p… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Lindsey Pelas at a fashion show in May 2019. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
The logo of the prediction market platform Kalshi is displayed on the screen of… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Rachel Reid, Jacob Tierney a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Jul. 11, 2008; Oakland, CA, USA; Los Angeles Angels outfielder Garret Anderson … a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
NBC Los Angeles div.site-footer__wrapper > div.site-footer__identity > a.site-footer__logo > img
/2024/08/KNBC_station_logo_light.png?fit=276%2C58&quality...
NBC Los Angeles div.flyout-nav > div.flyout-nav__logo > a > img
/2024/08/KNBC_station_logo_light.png?fit=276%2C58&quality...
ICE agents in masks in San Francisco. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/06/ice-masks-0616-e1750082543157.jpg?quality=85&str...
Signs wishing a speedy recovery to a man injured in an E motorcycle collision a… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/e-motorcycle-lake-forest-crash-signs-2026-04-22-...
Bear charges at hiker on Mt. Wilson trail a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
Congress seeks answers on missing and dead scientists a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
Gas prices drive up cost of Mother's Day flowers a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
How LA's mayoral hopefuls plan to keep Hollywood in Hollywood a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
A sign points to a vote center during the in-person early voting period in Cali… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Betty Yee talks to reporters at the Record Searchlight on Friday, Aug. 15, 2025. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
“Glass Half Full” podcast featuring Scott Galloway. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
NFL Christmas Gameday signage on a blimp a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Victor Wembanyama #1 of the San Antonio Spurs holds his head. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
San Antonio Spurs forward Victor Wembanyama (1) reacts after falling to the gro… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Sergio Fraire, 30, was arrested on suspicion of murder and attempted murder in … a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
An aerial view of the 2026 Coachella Valley Music and Arts Festival at Empire P… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Abigail Spanberger, governor of Virginia, speaks. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Tourists walk past a banner with President Donald Trump hanging on the Departme… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Tucker Carlson is one of several high profile former Trump supporters to break … a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Defense Secretary Pete Hegseth speaks to members of the media during a press br… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
David Howard Thornton a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
George W. Bush Jenna Bush Hager a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
NFL draft on the clock a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Oct 28, 2024; New York, New York, USA; Los Angeles Dodgers first baseman Freddi… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img

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

Layout shift culprits
Optimize DOM size
Font display
LCP breakdown
LCP request discovery
Modern HTTP
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 5 user timings
Avoid long main-thread tasks 20 long tasks found
Avoid non-composited animations 2 animated elements found
Network Requests
Network Round Trip Times 100 ms
Server Backend Latencies 510 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 20 ms
Avoid large layout shifts 13 layout shifts found
INP breakdown
82

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

When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn how to make command elements more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#home-fast-player > div.video-playlist__container > div.player > div.player__overlay div#home-fast-player > div.video-playlist__container > div.player > div.player__overlay

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

Contrast

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
TRENDING div.site-header__secondary > div.site-header__wrap > div.site-header__trending > span.site-header__trending-label
TONIGHT 53° div > div.weather-widget > div.tonight-tomorrow > div.tonight
TOMORROW 77° div > div.weather-widget > div.tonight-tomorrow > div.tomorrow
Copyright © 2026 NBCUniversal Media, LLC. All rights reserved footer.site-footer > div.site-footer__wrapper > div.site-footer__corporate > span.site-footer__corporate-copyright

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Bear charges at hiker on Mt. Wilson trail a > div.video-thumbnail__video > div.video-thumbnail__info > h4.video-thumbnail__video-title

These are opportunities to improve keyboard navigation in your application.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#homepage > div#template-hero > div.hero-background > img.hero-background__img div#homepage > div#template-hero > div.hero-background > img.hero-background__img
div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img

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
section#nbc_weather_widget-2 > div.nbc-weather-widget > div.nbc_owned_television_stations_weather_iframe > a section#nbc_weather_widget-2 > div.nbc-weather-widget > div.nbc_owned_television_stations_weather_iframe > a
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail

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.

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
Expand div.site-header__wrap > div.site-header__trending > div.site-header__trending-toggle > button.trending-toggle
CRIME AND COURTS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
AIRLINES div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LA COUNTY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
WOODLAND HILLS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LAX div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
2026 WORLD CUP div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
CALIFORNIA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
ORANGE COUNTY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
VIDEO GAMES div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
CALIFORNIA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
ORANGE COUNTY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
WAR WITH IRAN div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LAPD div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
DECISION 2026 div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
DECISION 2026 div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
DECISION 2026 div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
SCHOOLS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
MENTAL HEALTH div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
NFL div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
NBA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
NBA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
NBA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LAPD div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
CRIME AND COURTS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
GAMBLING div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
DECISION 2026 div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
POLITICS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
MILITARY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
TELEVISION div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
CELEBRITY NEWS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
TODAY SHOW div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LOS ANGELES ANGELS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
NFL div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link

These items highlight common accessibility best practices.

Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Input buttons have discernible text.
Form elements have associated labels
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
ARIA attributes are used as specified for the element's role
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
Document has a `<title>` element
`<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
Document has a main landmark.
Deprecated ARIA roles were not used
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Identical links have the same purpose.
`[accesskey]` values are unique
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
`<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
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.
Elements with visible text labels have matching accessible names.
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
www.nbclosangeles.com/ line 47, col 0
Access to script at 'https://cdn.cookielaw.org/consent/d4407bf9-92dd-4059-9784-1861b1915b91/otSDKStub.js' from origin 'https://www.nbclosangeles.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Error: Source layer "c_05ap16a" does not exist on source "composite" as specified by style layer "county_lines" at i._validateLayer (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1435349) at i.<anonymous> (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1432327) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952463) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1338253 at o (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1335987) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:948674
Error: Source layer "coastlines" does not exist on source "composite" as specified by style layer "coastlines" at i._validateLayer (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1435349) at i.<anonymous> (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1432327) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952463) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1338253 at o (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1335987) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:948674
Error: Source layer "glin_gl_mainlakes" does not exist on source "composite" as specified by style layer "Great Lakes Coastline" at i._validateLayer (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1435349) at i.<anonymous> (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1432327) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952463) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1338253 at o (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1335987) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:948674
Failed to load resource: net::ERR_FAILED
Failed to load resource: the server responded with a status of 403 ()
Failed to load resource: the server responded with a status of 451 ()
Uncaught (in promise) TypeError: Cannot read properties of null (reading 'clientHeight')
Uses HTTPS
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No issues in the `Issues` panel in Chrome Devtools
Ensure CSP is effective against XSS attacks
Use a strong HSTS policy
Ensure proper origin isolation with COOP
Mitigate clickjacking with XFO or CSP
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Page has valid source maps
Redirects HTTP traffic to HTTPS
92

SEO

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

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#homepage > div#template-hero > div.hero-background > img.hero-background__img div#homepage > div#template-hero > div.hero-background > img.hero-background__img
div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img

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

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
Links have descriptive text
Links are crawlable
robots.txt is valid
Document has a valid `hreflang`
Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

69
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
78
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience. — Desktop

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

1.18 s

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

1.39 s

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

375 ms

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

0.026

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

3.32 s

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

8.95 s

Detailed Report

Audit breakdown by category with detailed findings.

69

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

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

Learn more

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

Source: Google web.dev / Lighthouse

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff53172.0 s420.2 KiB
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1600.0 s210.3 KiB
native.sharethrough.com/assets/sfp.js3600.0 s126.7 KiB
mssl.fwmrm.net/libs/adm/7.2.1/AdManager.js0.0 ms91.1 KiB
/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff62615.0 s187.2 KiB
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest39844.0 s157.5 KiB
widgets-blue.media.weather.com/wxwidget.loader.js?cid=36936287286371.0 s157.5 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
assets.adobedtm.com/a2ef59fba8e9/3ba8c6b033ff/launch-6a742ce4ddf5.min.js3600.0 s68.9 KiB
assets.adobedtm.com/ddcf247e4bf5/82484060cd13/launch-7d75747d0373.min.js3600.0 s65.0 KiB
ak.sail-horizon.com/spm/spm.v1.min.js?ver=202617600.0 s48.1 KiB
/widgets/wxwidget.map.js?cid=369362872&memberid=1470&mapi...86372.0 s92.5 KiB
cdn.branch.io/branch-latest.min.js300.0 s23.5 KiB
js-sec.indexww.com/ht/p/185796-256714881512110.js14400.0 s32.6 KiB
sb.scorecardresearch.com/internal-c2/default/streamingtag_plugin_jwplayer.js86400.0 s53.4 KiB
static.criteo.net/js/ld/publishertag.js86400.0 s47.6 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/jwpsrv.js900.0 s18.0 KiB
/2026/04/47623895855-1080pnbcstations.jpg?quality=85&stri...86400.0 s31.2 KiB
c2.taboola.com/nr/nbcots-knbc/newsroom.js14400.0 s17.5 KiB
/2026/04/lax-people-mover-2026-04-22-072418.png?resize=85...86400.0 s27.3 KiB
/chunks/wxwidget.mapDefaultLayout.js?v=4e77d53b1e6b2a3178a086373.0 s27.1 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/freewheel.js86400.0 s11.2 KiB
/dvtp_src.js900.0 s3.8 KiB
sb.scorecardresearch.com/beacon.js86400.0 s6.7 KiB
/js/v2/us1-36d67c9e4d591d4bb1bc1fa6c82ffcb9/mparticle.js?...3600.0 s1.6 KiB
pagead2.googlesyndication.com/pagead/js/r20260421/r20110914/abg_lite_fy2021.js1209600.0 s8.4 KiB
/_r?sdk=web2.87.1&branch_key=key_live_eo0T7DsCQTeDDwuby25...0.0 ms668 B
widgets-blue.media.weather.com/static/img/common/icons/25_white/radar.png25867.0 s872 B
/p?c1=2&c2=6035083&ns_type=hidden&ns_st_sv=6.3.0.180917&n...0.0 ms299 B
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js1209600.0 s1.2 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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:66.275 source:map[type:text value:[unattributed]]]]

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
span#5206205691138466848098 > div#google_image_div > a#aw0 > img.img_ad span#5206205691138466848098 > div#google_image_div > a#aw0 > img.img_ad
tpc.googlesyndication.com/simgad/14502698692446013594181.2 KiB141.7 KiB
Signs wishing a speedy recovery to a man injured in an E motorcycle collision a… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/e-motorcycle-lake-forest-crash-signs-2026-04-22-...83.7 KiB77.2 KiB
An aerial view of the 2026 Coachella Valley Music and Arts Festival at Empire P… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/GettyImages-2272186808.jpg?quality=85&strip=all&...68.5 KiB62.0 KiB
A sign points to a vote center during the in-person early voting period in Cali… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/11/GettyImages-2243717640.jpg?quality=85&strip=all&...56.3 KiB50.7 KiB
Child care a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/AP26112606432813.jpg?quality=85&strip=all&resize...76.0 KiB46.5 KiB
div#homepage > div#template-hero > div.hero-background > img.hero-background__img div#homepage > div#template-hero > div.hero-background > img.hero-background__img
/2019/09/LA_aerial-1-1.png?fit=2060%2C847&quality=85&stri...101.6 KiB39.5 KiB
Victor Wembanyama #1 of the San Antonio Spurs holds his head. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/GettyImages-2271894675-e1776829529433.jpg?qualit...41.5 KiB37.4 KiB
San Antonio Spurs forward Victor Wembanyama (1) reacts after falling to the gro… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/47621671936-1080pnbcstations.jpg?quality=85&stri...38.0 KiB34.3 KiB
ICE agents in masks in San Francisco. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/06/ice-masks-0616-e1750082543157.jpg?quality=85&str...36.3 KiB32.7 KiB
Sergio Fraire, 30, was arrested on suspicion of murder and attempted murder in … a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/burbank-stabbing-suspect-april-21-2026.jpg?quali...30.4 KiB27.4 KiB
XUMO_NBC_LOS_ANGELES_FAST_STREAM img.player__poster
/2024/05/NBC-Los-Angeles-FAST-thumbnail-as-of-6.3.24.png?...29.2 KiB25.6 KiB
The SkyLink Automated People Mover train is pictured April 22, 2026 at LAX. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/lax-people-mover-2026-04-22-072418.png?resize=85...26.9 KiB24.3 KiB
“Glass Half Full” podcast featuring Scott Galloway. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
media.nbcchicago.com/2026/04/galloway.png?resize=850%2C478&quality=85&strip=all26.8 KiB24.2 KiB
WASHINGTON, DC – DECEMBER 03: The FIFA World Cup Trophy is seen during the Comm… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/12/TLMD-copa-mundial.jpg?quality=85&strip=all&resiz...26.5 KiB23.9 KiB
NFL Christmas Gameday signage on a blimp a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/260422-nfl-netflix-getty.jpg?quality=85&strip=al...22.0 KiB19.8 KiB
Congress seeks answers on missing and dead scientists a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
/2026/04/47624477955-1080pnbcstations.jpg?quality=85&stri...21.9 KiB18.9 KiB
Los Angeles Lakers center Deandre Ayton (5) reacts on the court after a three-p… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/47623895855-1080pnbcstations.jpg?quality=85&stri...30.9 KiB17.1 KiB
FILE a CHP patrol car on an empty road. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2019/09/CHP-generic-patrol-car-road-0815.jpg?quality=85&...17.1 KiB15.4 KiB
Gas prices drive up cost of Mother's Day flowers a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
/2026/04/47618800789-1080pnbcstations.jpg?quality=85&stri...18.0 KiB15.0 KiB
How LA's mayoral hopefuls plan to keep Hollywood in Hollywood a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
/2026/04/47618086491-1080pnbcstations.jpg?quality=85&stri...13.6 KiB10.6 KiB
Bear charges at hiker on Mt. Wilson trail a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
/2026/04/47624569331-1080pnbcstations.jpg?quality=85&stri...13.4 KiB10.3 KiB
div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo
/2019/09/LA_On_Light@3x-1.png?fit=309%2C120&quality=85&st...15.1 KiB9.4 KiB
Watch div#home-fast-player > div.hp-livestream__title-container > div.hp-livestream__meta > img.hp-livestream__fast-logo
media.nbclosangeles.com/2024/04/LA-web@3x.png?fit=838%2C72&quality=85&strip=all4.8 KiB4.8 KiB

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
value: no origins were preconnected
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

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: 203 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 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

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 Evaluation3.0 s
Other2.4 s
Style & Layout1.0 s
Rendering528 ms
Script Parsing & Compilation320 ms
Parse HTML & CSS61 ms
Garbage Collection54 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 3.0 KiB
URLTransfer SizeEst Savings
/wp-content/themes/nbc-station/static/video/videoHeartbea...5.7 KiB3.0 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
Celeste Rivas Hernandez is pictured. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/celeste-rivas-hernandez-d4vd-murder-2026-04-20-0...
Betty Yee talks to reporters at the Record Searchlight on Friday, Aug. 15, 2025. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/USATSI_26856850-e1776708785226.jpg?quality=85&st...
Child care a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/AP26112606432813.jpg?quality=85&strip=all&resize...
Los Angeles Lakers center Deandre Ayton (5) reacts on the court after a three-p… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/47623895855-1080pnbcstations.jpg?quality=85&stri...
Lindsey Pelas at a fashion show in May 2019. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/02/USATSI_12652408.jpg?quality=85&strip=all&resize=...
Bear charges at hiker on Mt. Wilson trail a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
/2026/04/47624569331-1080pnbcstations.jpg?quality=85&stri...
Congress seeks answers on missing and dead scientists a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
/2026/04/47624477955-1080pnbcstations.jpg?quality=85&stri...
Gas prices drive up cost of Mother's Day flowers a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
/2026/04/47618800789-1080pnbcstations.jpg?quality=85&stri...
How LA's mayoral hopefuls plan to keep Hollywood in Hollywood a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
/2026/04/47618086491-1080pnbcstations.jpg?quality=85&stri...
Watch div#home-fast-player > div.hp-livestream__title-container > div.hp-livestream__meta > img.hp-livestream__fast-logo
media.nbclosangeles.com/2024/04/LA-web@3x.png?fit=838%2C72&quality=85&strip=all
ICE agents in masks in San Francisco. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/06/ice-masks-0616-e1750082543157.jpg?quality=85&str...
Signs wishing a speedy recovery to a man injured in an E motorcycle collision a… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/e-motorcycle-lake-forest-crash-signs-2026-04-22-...
FILE a CHP patrol car on an empty road. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2019/09/CHP-generic-patrol-car-road-0815.jpg?quality=85&...
The SkyLink Automated People Mover train is pictured April 22, 2026 at LAX. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/lax-people-mover-2026-04-22-072418.png?resize=85...
WASHINGTON, DC – DECEMBER 03: The FIFA World Cup Trophy is seen during the Comm… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/12/TLMD-copa-mundial.jpg?quality=85&strip=all&resiz...
A sign points to a vote center during the in-person early voting period in Cali… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/11/GettyImages-2243717640.jpg?quality=85&strip=all&...
Betty Yee talks to reporters at the Record Searchlight on Friday, Aug. 15, 2025. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/USATSI_26856850-e1776708785226.jpg?quality=85&st...
“Glass Half Full” podcast featuring Scott Galloway. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
media.nbcchicago.com/2026/04/galloway.png?resize=850%2C478&quality=85&strip=all
NFL Christmas Gameday signage on a blimp a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/260422-nfl-netflix-getty.jpg?quality=85&strip=al...
Victor Wembanyama #1 of the San Antonio Spurs holds his head. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/GettyImages-2271894675-e1776829529433.jpg?qualit...
San Antonio Spurs forward Victor Wembanyama (1) reacts after falling to the gro… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/47621671936-1080pnbcstations.jpg?quality=85&stri...
Sergio Fraire, 30, was arrested on suspicion of murder and attempted murder in … a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/burbank-stabbing-suspect-april-21-2026.jpg?quali...
An aerial view of the 2026 Coachella Valley Music and Arts Festival at Empire P… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/GettyImages-2272186808.jpg?quality=85&strip=all&...
div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo
/2019/09/LA_On_Light@3x-1.png?fit=309%2C120&quality=85&st...
NBC Los Angeles div.site-footer__wrapper > div.site-footer__identity > a.site-footer__logo > img
/2024/08/KNBC_station_logo_light.png?fit=276%2C58&quality...
NBC Los Angeles div.flyout-nav > div.flyout-nav__logo > a > img
/2024/08/KNBC_station_logo_light.png?fit=276%2C58&quality...
The logo of the prediction market platform Kalshi is displayed on the screen of… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Rachel Reid, Jacob Tierney a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
David Howard Thornton a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
George W. Bush Jenna Bush Hager a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Jul. 11, 2008; Oakland, CA, USA; Los Angeles Angels outfielder Garret Anderson … a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
NFL draft on the clock a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Oct 28, 2024; New York, New York, USA; Los Angeles Dodgers first baseman Freddi… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img

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

Layout shift culprits
Optimize DOM size
Font display
LCP breakdown
LCP request discovery
Modern HTTP
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 3 user timings
Avoid long main-thread tasks 19 long tasks found
Network Requests
Network Round Trip Times 100 ms
Server Backend Latencies 470 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 40 ms
Avoid large layout shifts 8 layout shifts found
INP breakdown
Avoid non-composited animations
78

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

When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn how to make command elements more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#home-fast-player > div.video-playlist__container > div.player > div.player__overlay div#home-fast-player > div.video-playlist__container > div.player > div.player__overlay

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

Contrast

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
TRENDING div.site-header__secondary > div.site-header__wrap > div.site-header__trending > span.site-header__trending-label
SOUTHERN CALIFORNIA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
18 MINUTES AGO div.story-card > div.story-card__text > div.story-card__meta > span.story-card__meta-time
AIRLINES div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
7 MINUTES AGO div.story-card > div.story-card__text > div.story-card__meta > span.story-card__meta-time
LA COUNTY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
33 MINUTES AGO div.story-card > div.story-card__text > div.story-card__meta > span.story-card__meta-time
TONIGHT 53° div > div.weather-widget > div.tonight-tomorrow > div.tonight
TOMORROW 77° div > div.weather-widget > div.tonight-tomorrow > div.tomorrow
Copyright © 2026 NBCUniversal Media, LLC. All rights reserved footer.site-footer > div.site-footer__wrapper > div.site-footer__corporate > span.site-footer__corporate-copyright

These are opportunities to improve the legibility of your content.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#homepage > div#template-hero > div.hero-background > img.hero-background__img div#homepage > div#template-hero > div.hero-background > img.hero-background__img
div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.player > div.player__controls > div.player__progress > input#seek div.player > div.player__controls > div.player__progress > input#seek

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
section#nbc_weather_widget-2 > div.nbc-weather-widget > div.nbc_owned_television_stations_weather_iframe > a section#nbc_weather_widget-2 > div.nbc-weather-widget > div.nbc_owned_television_stations_weather_iframe > a
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail
div.homepage-categories__row > div.homepage-categories__category > div.homepage-categories__category-item > a.story-card__thumbnail

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.

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
STREAM NBC LA NEWS 24/7 nav.site-header__nav-sections > div.menu-primary-container > nav#primary-menu > a.menu-item
Fair 68º div.site-header__weather-tv > div.site-header__local-weather > div.site-header__weather > a.site-header__weather-link
Expand div.site-header__wrap > div.site-header__trending > div.site-header__trending-toggle > button.trending-toggle
CRIME AND COURTS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
SOUTHERN CALIFORNIA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
AIRLINES div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LA COUNTY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
CALIFORNIA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
ORANGE COUNTY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
WAR WITH IRAN div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LAPD div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
SAN GABRIEL VALLEY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
WOODLAND HILLS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LAX div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
2026 WORLD CUP div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
CRIME AND COURTS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
CALIFORNIA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
ANGELES NATIONAL FOREST div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
ORANGE COUNTY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LOS ANGELES ANGELS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
VIDEO GAMES div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
DECISION 2026 div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
DECISION 2026 div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
DECISION 2026 div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
SCHOOLS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
MENTAL HEALTH div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
NFL div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
NBA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
NBA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
NBA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LAPD div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
CRIME AND COURTS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
GAMBLING div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
DECISION 2026 div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
TRUMP ADMINISTRATION div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
POLITICS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
MILITARY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
TELEVISION div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
CELEBRITY NEWS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
TODAY SHOW div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LOS ANGELES ANGELS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
NFL div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LOS ANGELES DODGERS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
FCC Applications div.site-footer__wrapper > ul#menu-secondary-footer > li#menu-item-2451723 > a
Send Feedback div.site-footer__wrapper > ul#menu-secondary-footer > li#menu-item-2227731 > a
Advertise With Us div.site-footer__wrapper > ul#menu-secondary-footer > li#menu-item-2413457 > a
Privacy Policy div.site-footer__wrapper > ul#menu-secondary-footer > li#menu-item-2227736 > a
Terms of Service div.site-footer__wrapper > ul#menu-secondary-footer > li#menu-item-3407823 > a
CA Notice div.site-footer__wrapper > ul#menu-secondary-footer > li#menu-item-2400314 > a
Ad Choices div.site-footer__wrapper > ul#menu-secondary-footer > li#menu-item-2416001 > a

These items highlight common accessibility best practices.

Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Input buttons have discernible text.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
ARIA attributes are used as specified for the element's role
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
Document has a `<title>` element
`<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
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Identical links have the same purpose.
`[accesskey]` values are unique
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
`<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
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.
Elements with visible text labels have matching accessible names.
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
Access to script at 'https://cdn.cookielaw.org/consent/d4407bf9-92dd-4059-9784-1861b1915b91/otSDKStub.js' from origin 'https://www.nbclosangeles.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Error: Source layer "c_05ap16a" does not exist on source "composite" as specified by style layer "county_lines" at i._validateLayer (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1435349) at i.<anonymous> (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1432327) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952463) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1338253 at o (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1335987) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:948674
Error: Source layer "coastlines" does not exist on source "composite" as specified by style layer "coastlines" at i._validateLayer (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1435349) at i.<anonymous> (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1432327) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952463) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1338253 at o (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1335987) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:948674
Error: Source layer "glin_gl_mainlakes" does not exist on source "composite" as specified by style layer "Great Lakes Coastline" at i._validateLayer (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1435349) at i.<anonymous> (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1432327) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952463) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at Mt.fire (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:952781) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1338253 at o (https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:1335987) at https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff:2:948674
Failed to load resource: net::ERR_FAILED
Failed to load resource: the server responded with a status of 403 ()
Failed to load resource: the server responded with a status of 451 ()
Uncaught (in promise) TypeError: Cannot read properties of null (reading 'clientHeight')
Uses HTTPS
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No issues in the `Issues` panel in Chrome Devtools
Ensure CSP is effective against XSS attacks
Use a strong HSTS policy
Ensure proper origin isolation with COOP
Mitigate clickjacking with XFO or CSP
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Page has valid source maps
Redirects HTTP traffic to HTTPS
92

SEO

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

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#homepage > div#template-hero > div.hero-background > img.hero-background__img div#homepage > div#template-hero > div.hero-background > img.hero-background__img
div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo div.nbc_owned_television_stations_weather_iframe > a > div.weather-module-brand > img.widget_logo
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img

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

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
Links have descriptive text
Links are crawlable
robots.txt is valid
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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