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Lighthouse Mobile

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

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff20892.0 s420.2 KiB
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1600.0 s210.3 KiB
/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff18805.0 s187.2 KiB
widgets-blue.media.weather.com/wxwidget.loader.js?cid=36936287218714.0 s157.4 KiB
native.sharethrough.com/assets/sfp.js3600.0 s127.0 KiB
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest56706.0 s157.4 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 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
/widgets/wxwidget.map.js?cid=369362872&memberid=1470&mapi...40001.0 s92.5 KiB
/js/v2/us1-36d67c9e4d591d4bb1bc1fa6c82ffcb9/mparticle.js?...3600.0 s58.1 KiB
ak.sail-horizon.com/spm/spm.v1.min.js?ver=202617600.0 s48.1 KiB
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js86400.0 s102.4 KiB
/2026/04/HGhA-szWgAAoRB0-e1776869340940.jpg?quality=85&st...86400.0 s77.7 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 s53.9 KiB
static.criteo.net/js/ld/publishertag.js86400.0 s47.6 KiB
s0.2mdn.net/879366/express_html_inpage_rendering_lib_200_287.js86400.0 s40.9 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/jwpsrv.js900.0 s18.1 KiB
/chunks/wxwidget.mapDefaultLayout.js?v=4e77d53b1e6b2a3178a029410.0 s27.1 KiB
c2.taboola.com/nr/nbcots-kntv/newsroom.js14400.0 s17.9 KiB
ep2.adtrafficquality.google/sodar/VFc2VJAc.js3000.0 s14.1 KiB
/image/thumb/Purple122/v4/0d/ff/23/0dff2365-384d-c674-275...597134.0 s58.0 KiB
cdn.cookielaw.org/scripttemplates/202309.1.0/otGPP.js86400.0 s11.8 KiB
/dvtp_src.js900.0 s3.8 KiB
/logos/17e5cb00-ad90-47f5-a58d-77597d9d2c16/ffe22c24-b5ec...86400.0 s8.2 KiB
cdn.cookielaw.org/consent/583a7391-01de-4036-93b5-d83d6f03abf1/otSDKStub.js86400.0 s7.4 KiB
sb.scorecardresearch.com/beacon.js86400.0 s6.8 KiB
cdn.cookielaw.org/opt-out/otCCPAiab.js86400.0 s6.4 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.7 KiB
pagead2.googlesyndication.com/pagead/js/r20260421/r20110914/abg_lite.js1209600.0 s10.5 KiB
/pagead/js/r20260421/r20110914/client/qs_click_protection...1209600.0 s8.9 KiB
/_r?sdk=web2.87.1&branch_key=key_live_di7I9uqCUKilJ6Ok1C2...0.0 ms663 B
/pagead/js/r20260421/r20110914/elements/html/omrhp.js1209600.0 s4.7 KiB
widgets-blue.media.weather.com/static/img/common/icons/25_white/radar.png43883.0 s872 B
/p2?c1=2&c2=6035083&ns_type=hidden&ns_st_sv=6.3.0.180917&...0.0 ms299 B
match.adsrvr.org/track/cmb/generic?ttd_tpi=1&ttd_pid=q4jldgr0.0 ms255 B
match.adsrvr.org/track/cmb/generic?ttd_tpi=1&ttd_pid=lewrkpm0.0 ms254 B
geolocation.onetrust.com/cookieconsentpub/v1/geo/location/dnsfeed0.0 ms225 B
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js1209600.0 s1.6 KiB
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js1209600.0 s1.3 KiB
cdn.indexww.com/ht/htw-pixel.gif?0=&us_privacy=1YNN86400.0 s223 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
/dvtp_src.js900.0 s0 B
/dvtp_src.js900.0 s0 B
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js1209600.0 s0 B
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js1209600.0 s0 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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:0.676 source:map[column:270215 line:2 type:source-location url:https://cdn.doubleverify.com/dv-measurements9761.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:77.707 source:map[type:text value:[unattributed]]] map[reflowTime:0.676 source:map[column:265115 line:1 type:source-location url:https://cdn.doubleverify.com/dv-measurements9761.js urlProvider:network]] map[reflowTime:0.232 source:map[column:265115 line:1 type:source-location url:https://cdn.doubleverify.com/dv-measurements9761.js urlProvider:network]] map[reflowTime:0.542 source:map[column:265115 line:1 type:source-location url:https://cdn.doubleverify.com/dv-measurements9761.js urlProvider:network]] map[reflowTime:0.662 source:map[column:71874 line:1 type:source-location url:https://www.nbcbayarea.com/wp-content/themes/nbc-station/client/build/js/home.5b3b6c9f8371f5116579.bundle.min.js urlProvider:network]] map[reflowTime:0.881 source:map[column:1.646048e+06 line:1 type:source-location url:https://widgets-blue.media.weather.com/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff urlProvider:network]] map[reflowTime:0.226 source:map[column:568458 line:1 type:source-location url:https://widgets-blue.media.weather.com/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff urlProvider:network]] map[reflowTime:0.196 source:map[column:566916 line:1 type:source-location url:https://widgets-blue.media.weather.com/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff 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
span#7281764567138554826815 > div#google_image_div > a#aw0 > img.img_ad span#7281764567138554826815 > div#google_image_div > a#aw0 > img.img_ad
tpc.googlesyndication.com/simgad/1827993403810025608788.1 KiB75.9 KiB
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/HGhA-szWgAAoRB0-e1776869340940.jpg?quality=85&st...77.3 KiB75.4 KiB
San Francisco skyline. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2019/09/SFSkyline-3.jpg?quality=85&strip=all&resize=850%...77.6 KiB65.0 KiB
XUMO_NBC_BAY_AREA_FAST_STREAM img.player__poster
/2024/06/KNTV-BayBridge-evening-FAST.png?resize=850%2C478...61.4 KiB49.7 KiB
An LAPD officer walks near masked federal agents staged outside a gate of Dodge… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/06/GettyImages-2220980389-e1750713566300.jpg?qualit...50.7 KiB49.2 KiB
Young boy dies after being struck by car in San Jose parking area div.video-module__column > div.video-module__video > div.video-playlist__placeholder > img
/2026/04/47637172637-1080pnbcstations.jpg?quality=85&stri...60.7 KiB49.1 KiB
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/Joe_Lacob_USATSI.jpg?quality=85&strip=all&resize...60.1 KiB48.6 KiB
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/Pedestrian-struck-killed-in-San-Jose.jpg?quality...55.3 KiB44.8 KiB
NBC Bay Area div.site-header__wrap > div.site-header__logo > a > img
s0.2mdn.net/simgad/221830707644906150530.8 KiB28.2 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/Bay-Area-2.png?fit=2060%2C847&quality=85&strip=a...39.3 KiB26.7 KiB
span#7281764567138555611890 > div#google_image_div > a#aw0 > img.img_ad span#7281764567138555611890 > div#google_image_div > a#aw0 > img.img_ad
tpc.googlesyndication.com/simgad/184888218145222005018.2 KiB15.6 KiB
Generic photo of CHP cruiser a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2022/04/CHP-generic.png?resize=850%2C478&quality=85&stri...17.0 KiB13.8 KiB
SAN FRANCISCO, CALIFORNIA – MARCH 29: Head coach Todd Golden of the Florida Gat… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/GettyImages-2206946194-e1776877469293.jpg?qualit...14.1 KiB13.7 KiB
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/New-fleet-of-delivery-robots-begin-service-in-do...16.8 KiB13.6 KiB
Watch div#home-fast-player > div.hp-livestream__title-container > div.hp-livestream__meta > img.hp-livestream__fast-logo
/2024/09/NBC-SFBA-Light-1-Line.png?fit=1730%2C126&quality...11.3 KiB11.2 KiB
span#534114018138554338477 > div#google_image_div > a#aw0 > img.img_ad span#534114018138554338477 > div#google_image_div > a#aw0 > img.img_ad
tpc.googlesyndication.com/simgad/1094592055759020886513.5 KiB10.9 KiB
File - John Phelan speaks onstage during the Reindustrialize Conference 2025 on… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/sadbundle/7606317786921254690/images/60d9b5b79b5b73fd423...7.7 KiB5.3 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.

URLTransfer SizeDuration
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1210.3 KiB3.5 s
sb.scorecardresearch.com/internal-c2/default/streamingtag_plugin_jwplayer.js53.9 KiB758 ms
/wp-content/themes/nbc-station/client/build/css/home.6de9...17.4 KiB151 ms
/wp-content/themes/nbc-station/client/build/css/jwPlayer....22.9 KiB604 ms
www.nbcbayarea.com/wp-content/plugins/ad-layers-nbc/js/ad-layers.js?ver=0.0.10814 B
/wp-content/plugins/ad-layers-nbc/js/ad-layers-dfp.js?ver...1.6 KiB
/wp-content/themes/nbc-station/client/build/css/unifiedId...3.3 KiB
ak.sail-horizon.com/spm/spm.v1.min.js?ver=20261748.1 KiB1.7 s

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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
/dvtp_src.jshttp/1.1
/dvtp_src.jshttp/1.1
cdn.doubleverify.com/dv-measurements9761.jshttp/1.1
/dvtp_src.jshttp/1.1

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

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 755 ms
URLTime Spent
nbcbayarea.com/755 ms
www.nbcbayarea.com/0.0 ms

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: 0.0 ms 96.8 KiB
URLTransfer SizeEst Savings
@charset "UTF-8";@import"https://fonts.googleapis.com/css2?family=Roboto:wght@700,500,300&display=s…29.4 KiB29.4 KiB
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} …20.2 KiB19.8 KiB
html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6...20.2 KiB16.9 KiB
/wp-content/themes/nbc-station/client/build/css/jwPlayer....22.7 KiB16.7 KiB
/wp-content/themes/nbc-station/client/build/css/home.6de9...17.1 KiB14.0 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: 4.3 s 1.5 MiB
URLTransfer SizeEst Savings
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff419.9 KiB242.9 KiB
cdn.taboola.com/libtrc/nbcots-network/loader.js327.4 KiB211.9 KiB
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1209.8 KiB157.9 KiB
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...187.7 KiB87.3 KiB
/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff186.0 KiB76.4 KiB
native.sharethrough.com/assets/sfp.js126.6 KiB64.3 KiB
ssl.p.jwpcdn.com/player/v/8.30.1/provider.hlsjs.js114.2 KiB56.2 KiB
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js102.1 KiB55.8 KiB
widgets-blue.media.weather.com/wxwidget.loader.js?cid=369362872157.1 KiB54.1 KiB
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest141.1 KiB47.4 KiB
micro.rubiconproject.com/prebid/dynamic/24610.js109.3 KiB38.9 KiB
cdn.doubleverify.com/dv-measurements9761.js93.9 KiB34.5 KiB
cdn.doubleverify.com/dv-measurements9761.js93.9 KiB34.5 KiB
cdn.doubleverify.com/dv-measurements9761.js93.9 KiB34.3 KiB
/widgets/wxwidget.map.js?cid=369362872&memberid=1470&mapi...91.9 KiB33.2 KiB
ak.sail-horizon.com/spm/spm.v1.min.js?ver=20261747.6 KiB32.5 KiB
/js/v2/us1-36d67c9e4d591d4bb1bc1fa6c82ffcb9/mparticle.js?...57.8 KiB31.5 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.0 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.0 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.0 KiB
sb.scorecardresearch.com/c2/plugins/streamingtag_plugin_jwplayer.js?ver=1.0.253.6 KiB30.9 KiB
static.criteo.net/js/ld/publishertag.js47.3 KiB29.2 KiB
assets.adobedtm.com/ddcf247e4bf5/82484060cd13/launch-7d75747d0373.min.js64.7 KiB28.0 KiB
assets.adobedtm.com/a2ef59fba8e9/3ba8c6b033ff/launch-6a742ce4ddf5.min.js68.7 KiB23.4 KiB
/wp-content/themes/nbc-station/client/build/js/jwPlayer.5...27.4 KiB21.4 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.

URLTotal CPU TimeScript EvaluationScript Parse
ssl.p.jwpcdn.com/player/v/8.30.1/jwplayer.core.js5.4 s323 ms17 ms
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff4.8 s3.6 s287 ms
Unattributable3.6 s836 ms0.0 ms
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...3.0 s2.2 s275 ms
www.nbcbayarea.com/1.9 s150 ms56 ms
cdn.doubleverify.com/dv-measurements9761.js1.2 s936 ms204 ms
ssl.p.jwpcdn.com/player/v/8.30.1/provider.hlsjs.js1.1 s820 ms48 ms
cdn.taboola.com/libtrc/nbcots-network/loader.js703 ms393 ms165 ms
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1588 ms392 ms101 ms
/widgets/wxwidget.map.js?cid=369362872&memberid=1470&mapi...578 ms508 ms54 ms
/wp-content/themes/nbc-station/static/video/videoHeartbea...454 ms401 ms22 ms
/pagead/managed/js/activeview/current/ufs_web_display.js446 ms341 ms30 ms
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest384 ms230 ms74 ms
micro.rubiconproject.com/prebid/dynamic/24610.js358 ms310 ms39 ms
/chunks/wxwidget.mapDefaultLayout.js?v=4e77d53b1e6b2a3178a0307 ms234 ms24 ms
cdn.cookielaw.org/scripttemplates/202309.1.0/otGPP.js296 ms287 ms6.9 ms
widgets-blue.media.weather.com/wxwidget.loader.js?cid=369362872281 ms162 ms72 ms
/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff279 ms23 ms160 ms
cdn.doubleverify.com/dvtp_src.js275 ms256 ms10 ms
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js249 ms175 ms52 ms
/wp-content/themes/nbc-station/static/video/jwplayer/jwpl...206 ms151 ms48 ms
assets.adobedtm.com/a2ef59fba8e9/3ba8c6b033ff/launch-6a742ce4ddf5.min.js203 ms133 ms36 ms
/wp-content/themes/nbc-station/client/build/js/home.5b3b6...197 ms139 ms12 ms
assets.adobedtm.com/ddcf247e4bf5/82484060cd13/launch-7d75747d0373.min.js177 ms149 ms25 ms
native.sharethrough.com/assets/sfp.js129 ms58 ms69 ms
/extensions/EPb56e12d7054b4acea984e91c910051cc/AppMeasure...119 ms115 ms0.6 ms
/_r?sdk=web2.87.1&branch_key=key_live_di7I9uqCUKilJ6Ok1C2...104 ms80 ms1.5 ms
ak.sail-horizon.com/spm/spm.v1.min.js?ver=202617101 ms83 ms17 ms
/js/v2/us1-36d67c9e4d591d4bb1bc1fa6c82ffcb9/mparticle.js?...100 ms64 ms26 ms
js-sec.indexww.com/ht/p/185796-256714881512110.js94 ms59 ms17 ms
www.googletagservices.com/tag/js/gpt.js87 ms75 ms12 ms
/wp-content/themes/nbc-station/client/build/js/common.618...80 ms62 ms9.2 ms
/visit.js?gdpr=&gdpr_consent=&flvr=0&ttmms=78&ttfrms=34&b...77 ms74 ms0.5 ms
cdn.cookielaw.org/consent/583a7391-01de-4036-93b5-d83d6f03abf1/otSDKStub.js75 ms60 ms2.7 ms
/visit.js?gdpr=&gdpr_consent=&flvr=0&ttmms=196&ttfrms=36&...73 ms71 ms0.7 ms
/visit.js?gdpr=&gdpr_consent=&flvr=0&ttmms=150&ttfrms=36&...69 ms68 ms0.5 ms
static.criteo.net/js/ld/publishertag.js68 ms52 ms16 ms
/js/sv.js?sv_cid=5998_04801&sv_origin=www.nbcbayarea.com68 ms52 ms8.5 ms
ep2.adtrafficquality.google/sodar/sodar2.js62 ms54 ms2.8 ms
/wp-content/themes/nbc-station/client/build/js/global.690...56 ms46 ms4.6 ms
cdn.cookielaw.org/opt-out/otCCPAiab.js56 ms52 ms3.0 ms
stats.wp.com/e-202617.js54 ms38 ms0.8 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 Evaluation14.6 s
Other9.2 s
Script Parsing & Compilation2.1 s
Style & Layout1.5 s
Garbage Collection626 ms
Rendering462 ms
Parse HTML & CSS399 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 5.6 KiB
URLTransfer SizeEst Savings
/wp-content/themes/nbc-station/static/video/videoHeartbea...5.7 KiB3.0 KiB
cdn.cookielaw.org/opt-out/otCCPAiab.js5.9 KiB2.6 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
xumo-drct-ch110-as8cj.fast.nbcuni.com/live/master_5/00492/master_5_03737.ts3.3 MiB
xumo-drct-ch110-as8cj.fast.nbcuni.com/live/master_5/00492/master_5_03736.ts2.5 MiB
xumo-drct-ch110-as8cj.fast.nbcuni.com/live/master_5/00492/master_5_03735.ts889.5 KiB
xumo-drct-ch110-as8cj.fast.nbcuni.com/live/master_3/00492/master_3_03734.ts775.0 KiB
/wxwidget.mosaic.js?cid=369362872&v=6eb3ef3d10ae586673ff420.2 KiB
cdn.taboola.com/libtrc/nbcots-network/loader.js327.9 KiB
id.nbcuni.com/websdk/v2/identity-sdk.min.js?ver=0.1210.3 KiB
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...187.7 KiB
/wxwidget.common.js?cid=369362872&v=6eb3ef3d10ae586673ff187.2 KiB
widgets.media.weather.com/wxwidget.loader.js?cid=369362872&ver=latest157.4 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
Young boy dies after being struck by car in San Jose parking area div.video-module__column > div.video-module__video > div.video-playlist__placeholder > img
/2026/04/47637172637-1080pnbcstations.jpg?quality=85&stri...
Watch div#home-fast-player > div.hp-livestream__title-container > div.hp-livestream__meta > img.hp-livestream__fast-logo
/2024/09/NBC-SFBA-Light-1-Line.png?fit=1730%2C126&quality...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/Joe_Lacob_USATSI.jpg?quality=85&strip=all&resize...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/47477440955-1080pnbcstations.jpg?quality=85&stri...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/Debit-cards-with-millions-of-dollars-expire-Apri...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/San-Francisco-tops-US-housing-market-as-homes-se...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/02/45824141714-1080pnbcstations.jpg?quality=85&stri...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/image-30-6-e1776819201997.jpg?quality=85&strip=a...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/ma-prom-closet-3-copy-1.jpg?quality=85&strip=all...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/Pedestrian-struck-killed-in-San-Jose.jpg?quality...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/New-fleet-of-delivery-robots-begin-service-in-do...
Generic photo of CHP cruiser a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2022/04/CHP-generic.png?resize=850%2C478&quality=85&stri...
San Francisco skyline. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2019/09/SFSkyline-3.jpg?quality=85&strip=all&resize=850%...
File - John Phelan speaks onstage during the Reindustrialize Conference 2025 on… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
A class explores the possibilities with their new LAUSD provided iPads at Broad… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
A portrait of the late Celeste Rivas Hernandez is shown during a press briefing… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
NBC Bay Area div.site-footer__wrapper > div.site-footer__identity > a.site-footer__logo > img
/2024/08/KNTV_station_logo_light.png?fit=327%2C58&quality...
NBC Bay Area div.flyout-nav > div.flyout-nav__logo > a > img
/2024/08/KNTV_station_logo_light.png?fit=327%2C58&quality...
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
/2024/06/Microclimate-Weather-2.png?fit=366%2C46&quality=...
SAN FRANCISCO, CALIFORNIA – MARCH 29: Head coach Todd Golden of the Florida Gat… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/GettyImages-2206946194-e1776877469293.jpg?qualit...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/47624506414-1080pnbcstations.jpg?quality=85&stri...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/47462928441-1080pnbcstations.jpg?quality=85&stri...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/47463494453-1080pnbcstations.jpg?quality=85&stri...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/47407683771-1080pnbcstations.jpg?quality=85&stri...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/12/43933494608-1080pnbcstations.jpg?quality=85&stri...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/47624219209-1080pnbcstations.jpg?quality=85&stri...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/Rushing-Lee-USA.jpg?quality=85&strip=all&resize=...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/landen-roupp-dodgers-GETTY.jpg?quality=85&strip=...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/03/pediatric-cancer-tax-form-donation-5.png?resize=...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/01/hello-girls-update-5.jpg?quality=85&strip=all&re...
An LAPD officer walks near masked federal agents staged outside a gate of Dodge… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2025/06/GettyImages-2220980389-e1750713566300.jpg?qualit...
a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
/2026/04/HGhA-szWgAAoRB0-e1776869340940.jpg?quality=85&st...
Parents seek answers after toddler's death at San Francisco daycare a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
SF sets $3.4 billion price tag for public takeover of PG&E a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
Aggressive coyotes reported in Redwood City a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > img
Insurance crisis: CA lawmakers aim to address climate change, coverage concerns a > div.video-thumbnail__video > div.video-thumbnail__image-wrapper > 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
Abigail Spanberger, governor of Virginia, speaks. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Stephanie Gee and her dad Paul. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Housing in San Francisco. a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Housinggenericconstruction072517 a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Plane in the sky a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Vince Zampella at EA's "Battlefield 6" Reveal Celebration held at the Sunset Ro… a.story-card__thumbnail > div.imagewrap1 > div.imagewrap2 > img
Child care 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

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
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 8 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 60 ms
●Server Backend Latencies 180 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 5 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 48° div > div.weather-widget > div.tonight-tomorrow > div.tonight
TOMORROW 72° 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
Parents seek answers after toddler's death at San Francisco daycare 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
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
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
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
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
div.top-stories-hero__wrapper > div.top-stories-hero__column-1 > div.story-card > a.story-card__thumbnail
div.upper-featured-posts__wrapper > div.upper-featured-posts__column1 > div.story-card > a.story-card__thumbnail
div.upper-featured-posts__wrapper > div.upper-featured-posts__column1 > div.story-card > a.story-card__thumbnail
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.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > a.story-card__thumbnail
div.news-module > div.news-module__column > div.story-card > 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
Main Navigation div.site-header__wrap > div.site-header__nav-search > div.site-header__nav-main > button.site-header__nav-main-toggle
SF PG&E takeover div.site-header__wrap > div.site-header__trending > nav.site-header__trending-nav > a.site-header__trending-nav-item
Expand div.site-header__wrap > div.site-header__trending > div.site-header__trending-toggle > button.trending-toggle
SAN JOSE 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
SAN FRANCISCO 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
SAN JOSE div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
CALIFORNIA HIGHWAY PATROL div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
SAN FRANCISCO div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
SAN JOSE div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
SAN FRANCISCO 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
SARATOGA div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
REDWOOD CITY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
SARATOGA 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
SAN FRANCISCO div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
INSURANCE div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
NBA OFFSEASON div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
TODD GOLDEN 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
MILITARY 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
DECISION 2026 div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
SAN FRANCISCO div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
INVESTIGATIVE UNIT div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
INVESTIGATIVE UNIT 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
RESPONDS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
RESPONDS div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
SAN FRANCISCO div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
MAKING IT IN THE BAY div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
HOUSING div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
CONSUMER div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LAUSD 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
LAKE TAHOE 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
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
2026 NFL DRAFT div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
JUNG HOO LEE div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
LANDEN ROUPP div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
BAY AREA PROUD div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
BAY AREA PROUD div.story-card__text > div.story-card__meta > span.story-card__meta-tag > a.story-card__meta-tag-link
BAY AREA PROUD 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
Topics
micro.rubiconproject.com/prebid/dynamic/24610.js line 20, col 84959
SharedStorage
/pagead/managed/js/activeview/current/ufs_web_display.js line 252, col 234
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.

SourceDescription
/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
/wp-content/themes/nbc-station/client/build/js/jwPlayer.5... line 1, col 76550
TypeError: Cannot read properties of null (reading 'getMPID') at https://www.nbcbayarea.com/wp-content/themes/nbc-station/client/build/js/jwPlayer.54e847bc590d4b75ede6.bundle.min.js:2:76551
/wp-content/themes/nbc-station/client/build/js/jwPlayer.5... line 1, col 76550
TypeError: Cannot read properties of null (reading 'getMPID') at https://www.nbcbayarea.com/wp-content/themes/nbc-station/client/build/js/jwPlayer.54e847bc590d4b75ede6.bundle.min.js:2:76551
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
77

SEO

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.nbcuniversalprivacy.com/privacy#accordionheader5here

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
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
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
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
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.

Crawling and Indexing

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
OVERPRICED, OVERWHELMED, OVER IT div.homepage-categories__row > div.homepage-categories__category > h3.homepage-categories__category-link > a.homepage-categories__category-link-text

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

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

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