Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff	53200.0 s	420.2 KiB
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1	600.0 s	210.3 KiB
native.sharethrough.com/assets/sfp.js	3600.0 s	126.7 KiB
/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff	62643.0 s	187.2 KiB
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest	39873.0 s	157.5 KiB
widgets-blue.media.weather.com/wxwidget.loader.js?cid=369362872	86400.0 s	157.5 KiB
assets.adobedtm.com/a2ef59fba8e9/3ba8c6b033ff/launch-6a742ce4ddf5.min.js	3600.0 s	68.9 KiB
assets.adobedtm.com/ddcf247e4bf5/82484060cd13/launch-7d75747d0373.min.js	3600.0 s	65.0 KiB
ak.sail-horizon.com/spm/spm.v1.min.js?ver=202617	600.0 s	48.1 KiB
/widgets/wxwidget.map.js?cid=369362872&memberid=1470&mapi...	86400.0 s	92.5 KiB
cdn.branch.io/branch-latest.min.js	300.0 s	23.5 KiB
js-sec.indexww.com/ht/p/185796-256714881512110.js	14400.0 s	32.6 KiB
sb.scorecardresearch.com/internal-c2/default/streamingtag_plugin_jwplayer.js	86400.0 s	53.4 KiB
static.criteo.net/js/ld/publishertag.js	86400.0 s	47.6 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/jwpsrv.js	900.0 s	18.0 KiB
c2.taboola.com/nr/nbcots-knbc/newsroom.js	14400.0 s	17.5 KiB
/2026/04/lax-people-mover-2026-04-22-072418.png?resize=85...	86400.0 s	27.3 KiB
/chunks/wxwidget.mapDefaultLayout.js?v=4e77d53b1e6b2a3178a0	86400.0 s	27.1 KiB
sb.scorecardresearch.com/beacon.js	86400.0 s	6.7 KiB
/js/v2/us1-36d67c9e4d591d4bb1bc1fa6c82ffcb9/mparticle.js?...	3600.0 s	1.6 KiB
/_r?sdk=web2.87.1&branch_key=key_live_eo0T7DsCQTeDDwuby25...	0.0 ms	664 B
widgets-blue.media.weather.com/static/img/common/icons/25_white/radar.png	25895.0 s	872 B
/p?c1=2&c2=6035083&ns_type=hidden&ns_st_sv=6.3.0.180917&n...	0.0 ms	300 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.

	URL	Resource Size	Est 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 KiB	299.0 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 KiB	81.7 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 KiB	41.7 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 KiB	35.2 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 KiB	30.1 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 KiB	21.8 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 KiB	21.4 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 KiB	14.4 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 KiB	13.8 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 KiB	13.6 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=all	4.8 KiB	4.8 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.

URL	Transfer Size	Duration
sb.scorecardresearch.com/internal-c2/default/streamingtag_plugin_jwplayer.js	53.4 KiB	782 ms
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1	210.3 KiB	3.6 s
ak.sail-horizon.com/spm/spm.v1.min.js?ver=202617	48.1 KiB	1.8 s
/wp-content/plugins/ad-layers-nbc/js/ad-layers.js?ver=0.0.10	813 B
/wp-content/themes/nbc-station/client/build/css/home.6de9...	17.4 KiB	302 ms
/wp-content/plugins/ad-layers-nbc/js/ad-layers-dfp.js?ver...	1.6 KiB	151 ms
/wp-content/themes/nbc-station/client/build/css/jwPlayer....	22.9 KiB	603 ms
/wp-content/themes/nbc-station/client/build/css/unifiedId...	3.3 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.

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

URL	Time Spent
nbclosangeles.com/	752 ms
www.nbclosangeles.com/	0.0 ms

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 470 ms 76.9 KiB

URL	Transfer Size	Est Savings
@charset "UTF-8";@import"https://fonts.googleapis.com/css2?family=Roboto:wght@700,500,300&display=s…	29.4 KiB	29.4 KiB
html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6...	20.3 KiB	16.9 KiB
/wp-content/themes/nbc-station/client/build/css/jwPlayer....	22.7 KiB	16.7 KiB
/wp-content/themes/nbc-station/client/build/css/home.6de9...	17.1 KiB	13.9 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 4.0 s 1.2 MiB

URL	Transfer Size	Est Savings
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff	419.9 KiB	242.4 KiB
cdn.taboola.com/libtrc/nbcots-network/loader.js	329.3 KiB	212.6 KiB
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1	209.8 KiB	158.3 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB	107.0 KiB
/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff	186.0 KiB	76.9 KiB
native.sharethrough.com/assets/sfp.js	126.3 KiB	64.2 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/provider.hlsjs.js	114.2 KiB	56.4 KiB
widgets-blue.media.weather.com/wxwidget.loader.js?cid=369362872	157.2 KiB	54.2 KiB
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest	157.1 KiB	52.8 KiB
/widgets/wxwidget.map.js?cid=369362872&memberid=1470&mapi...	91.9 KiB	33.2 KiB
ak.sail-horizon.com/spm/spm.v1.min.js?ver=202617	47.7 KiB	32.5 KiB
micro.rubiconproject.com/prebid/dynamic/24610.js	46.1 KiB	32.1 KiB
sb.scorecardresearch.com/c2/plugins/streamingtag_plugin_jwplayer.js?ver=1.0.2	53.0 KiB	30.7 KiB
static.criteo.net/js/ld/publishertag.js	47.2 KiB	29.7 KiB
assets.adobedtm.com/ddcf247e4bf5/82484060cd13/launch-7d75747d0373.min.js	64.7 KiB	28.0 KiB
assets.adobedtm.com/a2ef59fba8e9/3ba8c6b033ff/launch-6a742ce4ddf5.min.js	68.7 KiB	23.4 KiB
/wp-content/themes/nbc-station/client/build/js/jwPlayer.5...	27.4 KiB	21.4 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
ssl.p.jwpcdn.com/player/v/8.30.1/jwplayer.core.js	7.2 s	538 ms	11 ms
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff	3.0 s	2.4 s	191 ms
Unattributable	1.6 s	499 ms	0.0 ms
www.nbclosangeles.com/	1.1 s	80 ms	15 ms
ssl.p.jwpcdn.com/player/v/8.30.1/provider.hlsjs.js	892 ms	676 ms	31 ms
cdn.taboola.com/libtrc/nbcots-network/loader.js	727 ms	248 ms	134 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	583 ms	490 ms	54 ms
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1	473 ms	337 ms	99 ms
widgets-blue.media.weather.com/wxwidget.loader.js?cid=369362872	299 ms	178 ms	74 ms
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest	293 ms	170 ms	60 ms
/wp-content/themes/nbc-station/static/video/videoHeartbea...	253 ms	212 ms	13 ms
/widgets/wxwidget.map.js?cid=369362872&memberid=1470&mapi...	249 ms	202 ms	42 ms
/chunks/wxwidget.mapDefaultLayout.js?v=4e77d53b1e6b2a3178a0	224 ms	180 ms	15 ms
static.criteo.net/js/ld/publishertag.js	198 ms	173 ms	12 ms
/wp-content/themes/nbc-station/client/build/js/home.5b3b6...	167 ms	128 ms	8.5 ms
assets.adobedtm.com/a2ef59fba8e9/3ba8c6b033ff/launch-6a742ce4ddf5.min.js	164 ms	114 ms	19 ms
/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff	143 ms	19 ms	78 ms
assets.adobedtm.com/ddcf247e4bf5/82484060cd13/launch-7d75747d0373.min.js	139 ms	115 ms	22 ms
/wp-content/themes/nbc-station/static/video/jwplayer/jwpl...	112 ms	98 ms	9.5 ms
/_r?sdk=web2.87.1&branch_key=key_live_eo0T7DsCQTeDDwuby25...	110 ms	89 ms	1.1 ms
/extensions/EPb56e12d7054b4acea984e91c910051cc/AppMeasure...	103 ms	98 ms	0.8 ms
/wp-content/themes/nbc-station/client/build/js/weatherCon...	102 ms	83 ms	2.1 ms
native.sharethrough.com/assets/sfp.js	90 ms	45 ms	43 ms
ak.sail-horizon.com/spm/spm.v1.min.js?ver=202617	84 ms	70 ms	13 ms
www.googletagservices.com/tag/js/gpt.js	80 ms	70 ms	9.9 ms
js-sec.indexww.com/ht/p/185796-256714881512110.js	77 ms	44 ms	9.6 ms
micro.rubiconproject.com/prebid/dynamic/24610.js	70 ms	43 ms	26 ms
sb.scorecardresearch.com/c2/plugins/streamingtag_plugin_jwplayer.js?ver=1.0.2	54 ms	30 ms	24 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.

Category	Time Spent
Script Evaluation	7.7 s
Other	7.6 s
Style & Layout	1.4 s
Script Parsing & Compilation	1.1 s
Rendering	787 ms
Garbage Collection	271 ms
Parse HTML & CSS	227 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 reason	Failure 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

URL	Transfer Size	Est Savings
/wp-content/themes/nbc-station/static/video/videoHeartbea...	5.7 KiB	3.0 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
xumo-drct-ch109-8jv1c.fast.nbcuni.com/live/master_3/00482/master_3_09088.ts	1.2 MiB
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff	420.2 KiB
xumo-drct-ch109-8jv1c.fast.nbcuni.com/live/master_6/00482/master_6_09087.ts	378.1 KiB
cdn.taboola.com/libtrc/nbcots-network/loader.js	329.8 KiB
/2024/05/NBC-Los-Angeles-FAST-thumbnail-as-of-6.3.24.png?...	312.1 KiB
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1	210.3 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB
/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff	187.2 KiB
widgets-blue.media.weather.com/wxwidget.loader.js?cid=369362872	157.5 KiB
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest	157.5 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
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

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.

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 / Warning	Source
Unload event listeners are deprecated and will be removed.	sb.scorecardresearch.com/c2/plugins/streamingtag_plugin_jwplayer.js?ver=1.0.2

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.

Source	Description
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.`
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff line 1, col 952819	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
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff line 1, col 952819	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
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff line 1, col 952819	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
cdn.cookielaw.org/consent/d4407bf9-92dd-4059-9784-1861b1915b91/otSDKStub.js	`Failed to load resource: net::ERR_FAILED`
/identity/?vendor=idsv2&sv_cid=5274_04512&sv_pubid=NBCLOC...	`Failed to load resource: the server responded with a status of 403 ()`
api.rlcdn.com/api/identity?pid=2&rt=envelope	`Failed to load resource: the server responded with a status of 451 ()`
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest line 1, col 433873	`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

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`