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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.

28

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
assets.adobedtm.com/launch-EN03682f66064449c8b87d78eae3e2fc57.min.js3600.0 s260.5 KiB
cdn.tinypass.com/api/tinypass.min.js14400.0 s132.6 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
client.aps.amazon-adsystem.com/publisher.js3600.0 s82.4 KiB
ak.sail-horizon.com/spm/spm.v1.min.js600.0 s48.1 KiB
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js86400.0 s102.4 KiB
/signals/config/3488358564546419?v=2.9.303&r=stable&domai...1200.0 s44.5 KiB
ats.rlcdn.com/ats.js0.0 ms36.8 KiB
/js/current/dpm_pixel_min.js?aid=nbcu-3dcc5105-25e1-45bf-...0.0 ms31.6 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
cdn-gl.imrworldwide.com/novms/js/2/nlsSDK600.bundle.min.js86400.0 s73.4 KiB
pub.doubleverify.com/dvtag/24187061/DV1473088/pub.js900.0 s30.6 KiB
s.skimresources.com/js/96128X1550925.skimlinks.js3600.0 s20.2 KiB
experiments.parsely.com/vip-experiments.js?apiKey=today.com30.0 s8.9 KiB
www.today.com/akam/13/5f7b1e2021600.0 s9.4 KiB
s.go-mpulse.net/boomerang/NNRUV-6MBQV-4TXDB-8TCWH-C36J3604800.0 s59.9 KiB
cdn.cxense.com/cx.cce.js3600.0 s6.8 KiB
www.queryly.com/js/queryly.v4.min.js14400.0 s7.9 KiB
/logos/17e5cb00-ad90-47f5-a58d-77597d9d2c16/d44e374b-e570...86400.0 s8.2 KiB
experience.tinypass.com/xbuilder/experience/load?aid=P2Bq5edBpu1800.0 s3.5 KiB
cdn.cookielaw.org/consent/c83a0803-ea18-4832-820d-70a839ff66da/otSDKStub.js86400.0 s7.4 KiB
sb.scorecardresearch.com/beacon.js86400.0 s6.7 KiB
/conf/PD12C0467-484A-43B1-8AE9-1DC91ED3A0CD.js86400.0 s6.7 KiB
cdn.cookielaw.org/opt-out/otCCPAiab.js86400.0 s6.4 KiB
/vendor/cfbf6814-ef53-427e-b99a-f3ba72e8a366/lightbox_spe...60.0 s2.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC26c4cd8fdaaa42c...3600.0 s2.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCfb2ffadfe0b7483...3600.0 s1.8 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCea6783b9270d41a...3600.0 s1.6 KiB
pm-widget.taboola.com/nbc-today/load.js3600.0 s1.6 KiB
jssdkcdns.mparticle.com/js/v2/3f8eeba44cd1254a897586bb26fa1c4a/mparticle.js3600.0 s1.6 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC29629d570823441...3600.0 s1.5 KiB
/z9gd/cfbf6814-ef53-427e-b99a-f3ba72e8a366/www.today.com/...0.0 ms1.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC10ae6175ef274cc...3600.0 s1.3 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.6 KiB
tru.am/scripts/ta-pagesocial-sdk.js2419200.0 s10.9 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCd3c1a5e3ebff490...3600.0 s1.2 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC66d2902f3486499...3600.0 s1.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCa00981fa767f42d...3600.0 s1.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC6b0f30ed3d5f420...3600.0 s1.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCb0cc5e6770e348c...3600.0 s1.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC852bad559c73478...3600.0 s1.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC20a98d1b07d24e9...3600.0 s1.0 KiB
platform.iteratehq.com/loader.js1800.0 s942 B
www.queryly.com/images/whitecloseicon.png14400.0 s1.1 KiB
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCb3cedaeced264fb...3600.0 s936 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC8106a0550d5e47a...3600.0 s911 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC5253be5ca58840b...3600.0 s898 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC97b7286119dc4f2...3600.0 s862 B
www.lightboxcdn.com/z9g/digibox.gif?c=1776800364549&h=www.today.com&e=p&u=440950.0 ms683 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC08ff7f657938422...3600.0 s843 B
config.aps.amazon-adsystem.com/configs/32193600.0 s839 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC361a3633d07a4f0...3600.0 s821 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC97e2a316b148435...3600.0 s787 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC225ac9d6a48f4a2...3600.0 s772 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC4729b5d65e9f4ad...3600.0 s758 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC37bea0527d27441...3600.0 s752 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC6f828e1c33e24b2...3600.0 s741 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCff54c0fbb15d49a...3600.0 s736 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCb89aaf77982841c...3600.0 s712 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC7a39031b5cc9404...3600.0 s707 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCd2a0773d48a54a7...3600.0 s695 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCa006cee2dce7475...3600.0 s687 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCf845abe17eca4a6...3600.0 s678 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCd92397a341d5401...3600.0 s663 B
/admantx/service?request=%7B%22decorator%22%3A%22template...0.0 ms530 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC6e35d03b014c4af...3600.0 s651 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC8a9f77140f52412...3600.0 s596 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RCdaa5cfa2002343c...3600.0 s575 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC2b2ab570b1ff47a...3600.0 s555 B
/Repo/rep.gif?ver=3.3.0&typ=pgv&rnd=mo9126jkyxspe9qx&sid=...0.0 ms413 B
/a2ef59fba8e9/0c702136bee3/d5e43d9e8a9d/RC71893d03aab149a...3600.0 s464 B
/t/beacon?adn=13&ca=direct&pl=https%3A%2F%2Fwww.today.com...0.0 ms367 B
neg9kyenvyuf7zhsb2xjv7xxqty8e1776800363.nuid.imrworldwide.com/0.0 ms350 B
p.skimresources.com/px.gif?ch=1&rn=2.9364544365378420.0 ms267 B
geolocation.onetrust.com/cookieconsentpub/v1/geo/location/dnsfeed0.0 ms252 B
/px/?rand=1776800363234&plid=54e0a708-bd61-4ce8-ad93-ed00...0.0 ms229 B
p.skimresources.com/px.gif?ch=2&rn=2.9364544365378420.0 ms93 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
nodeassets.nbcnews.com/_next/static/assets/fonts/iconfont.bfd63d432d.woff245 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:1.185 source:map[column:265237 line:1 type:source-location url:https://cdn.taboola.com/libtrc/nbc-today/loader.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:44.591 source:map[type:text value:[unattributed]]] map[reflowTime:4.214 source:map[column:804916 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbc-today/loader.js urlProvider:network]] map[reflowTime:21.249 source:map[column:174866 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbc-today/loader.js urlProvider:network]] map[reflowTime:0.396 source:map[column:174613 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbc-today/loader.js urlProvider:network]] map[reflowTime:9.055 source:map[column:265709 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbc-today/loader.js urlProvider:network]] map[reflowTime:5.981 source:map[column:463237 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbc-today/loader.js urlProvider:network]] map[reflowTime:5.19 source:map[column:489112 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbc-today/loader.js urlProvider:network]] map[reflowTime:2.204 source:map[column:683334 line:0 type:source-location url:https://cdn.taboola.com/libtrc/nbc-today/loader.js urlProvider:network]]]

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG
nodeLabel: div.styles_picture__0u3J_ > a > picture.teasePicture > img
path: 1,HTML,1,BODY,1,DIV,0,DIV,2,DIV,0,DIV,1,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,A,0,PICTURE,4,IMG
selector: div.styles_picture__0u3J_ > a > picture.teasePicture > img
snippet: <img loading="lazy" src="https://media-cldnry.s-nbcnews.com/image/upload/t_focal-440x220,f_avif,q_a…" alt="" height="1669" width="2500">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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
Christina Applegate at the Screen Actors Guild Awards on Jan. 19, 2020 in Los A… div.styles_teaseWrapper__LPUhJ > a > picture.teasePicture > img
/image/upload/t_focal-276x276,f_avif,q_auto:eco,dpr_2/roc...47.9 KiB45.0 KiB
Ryan Reynolds Sunday Sitdown div.styles_teaseWrapper__LPUhJ > a > picture.teasePicture > img
/image/upload/t_focal-276x276,f_avif,q_auto:eco,dpr_2/roc...29.7 KiB28.0 KiB
div.styles_teaseWrapper__LPUhJ > a > picture.teasePicture > img div.styles_teaseWrapper__LPUhJ > a > picture.teasePicture > img
/image/upload/t_focal-276x276,f_avif,q_auto:eco,dpr_2/roc...21.4 KiB20.1 KiB
Jenna Bush Hager and her father, former president George W. Bush div.styles_teaseWrapper__LPUhJ > a > picture.teasePicture > img
/image/upload/t_focal-276x276,f_avif,q_auto:eco,dpr_2/roc...20.8 KiB19.5 KiB
div.styles_teaseWrapper__LPUhJ > a > picture.teasePicture > img div.styles_teaseWrapper__LPUhJ > a > picture.teasePicture > img
/image/upload/t_focal-276x276,f_avif,q_auto:eco,dpr_2/roc...20.2 KiB19.0 KiB
Madonna performd with Sabrina Carpenter at Coachella Valley Music and Arts Fest… div.styles_teaseWrapper__LPUhJ > a > picture.teasePicture > img
/image/upload/t_focal-276x276,f_avif,q_auto:eco,dpr_2/roc...20.0 KiB18.8 KiB
div.styles_teaseWrapper__LPUhJ > a > picture.teasePicture > img div.styles_teaseWrapper__LPUhJ > a > picture.teasePicture > img
/image/upload/t_focal-276x276,f_avif,q_auto:eco,dpr_2/roc...19.6 KiB18.5 KiB
Maureen McCormick and Christine Taylor as Marcia Brady div.styles_teaseWrapper__LPUhJ > a > picture.teasePicture > img
/image/upload/t_focal-276x276,f_avif,q_auto:eco,dpr_2/roc...15.1 KiB14.2 KiB

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.0 s
URLTime Spent
today.com/1.0 s
www.today.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: 600 ms 163.7 KiB
URLTransfer SizeEst Savings
nodeassets.nbcnews.com/_next/static/css/33036fb5bdc6100d.css100.6 KiB99.2 KiB
nodeassets.nbcnews.com/_next/static/css/52d7bb8ed5cda2fd.css25.3 KiB20.5 KiB
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} …19.9 KiB17.7 KiB
.trc_rbox_container { direction: ltr; text-align: left; } …18.9 KiB14.9 KiB
nodeassets.nbcnews.com/_next/static/css/f5cd85229476aa0f.css11.7 KiB11.4 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: 600 ms 1.1 MiB
URLTransfer SizeEst Savings
cdn.taboola.com/libtrc/nbc-today/loader.js325.0 KiB155.6 KiB
nodeassets.nbcnews.com/_next/static/chunks/5280-150f1a1de928b343.js194.1 KiB134.6 KiB
nodeassets.nbcnews.com/_next/static/chunks/pages/_app-4175b61308aab8be.js249.5 KiB114.0 KiB
/pagead/managed/js/gpt/m202604090102/pubads_impl.js?cb=31...187.6 KiB104.9 KiB
/vendor/cfbf6814-ef53-427e-b99a-f3ba72e8a366/main.js?cb=D...193.2 KiB102.8 KiB
cdn.tinypass.com/api/tinypass.min.js132.1 KiB82.7 KiB
www.googletagmanager.com/gtag/js?id=DC-8168974129.4 KiB55.0 KiB
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js102.1 KiB53.4 KiB
client.aps.amazon-adsystem.com/publisher.js82.0 KiB47.1 KiB
cdn-gl.imrworldwide.com/novms/js/2/nlsSDK600.bundle.min.js73.0 KiB39.4 KiB
ak.sail-horizon.com/spm/spm.v1.min.js47.7 KiB32.5 KiB
micro.rubiconproject.com/prebid/dynamic/24610.js46.1 KiB31.8 KiB
s.go-mpulse.net/boomerang/NNRUV-6MBQV-4TXDB-8TCWH-C36J359.8 KiB26.4 KiB
nodeassets.nbcnews.com/_next/static/chunks/607-b8446445c2b3031e.js46.2 KiB25.9 KiB
mps.nbcuni.com/fetch/ext/load-nbcnews-bento.js?nowrite=jq65.2 KiB25.6 KiB
nodeassets.nbcnews.com/_next/static/chunks/main-a20bf94e5e380099.js42.9 KiB22.1 KiB
cdn.cxense.com/cx.js37.5 KiB21.8 KiB
ats.rlcdn.com/ats.js36.4 KiB20.9 KiB
nodeassets.nbcnews.com/_next/static/chunks/7978-8329f818c1255c70.js39.2 KiB20.1 KiB
nodeassets.nbcnews.com/_next/static/chunks/1687-f8d776d593cec93b.js25.2 KiB20.0 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
s.go-mpulse.net/boomerang/NNRUV-6MBQV-4TXDB-8TCWH-C36J31.3 s478 ms30 ms
Unattributable1.3 s306 ms0.0 ms
www.today.com/1.2 s45 ms4.7 ms
cdn.taboola.com/libtrc/nbc-today/loader.js1.0 s587 ms167 ms
nodeassets.nbcnews.com/_next/static/chunks/framework-d9b57ebce9e63786.js955 ms931 ms11 ms
assets.adobedtm.com/launch-EN03682f66064449c8b87d78eae3e2fc57.min.js876 ms540 ms284 ms
mps.nbcuni.com/fetch/ext/load-nbcnews-bento.js?nowrite=jq668 ms603 ms35 ms
nodeassets.nbcnews.com/_next/static/chunks/pages/_app-4175b61308aab8be.js616 ms475 ms70 ms
cdn.tinypass.com/api/tinypass.min.js400 ms255 ms33 ms
nodeassets.nbcnews.com/_next/static/chunks/pages/front-b59f41038e06a4b6.js362 ms359 ms2.6 ms
s.skimresources.com/js/96128X1550925.skimlinks.js290 ms223 ms5.9 ms
cdn.cookielaw.org/scripttemplates/202309.1.0/otBannerSdk.js258 ms164 ms42 ms
/vendor/cfbf6814-ef53-427e-b99a-f3ba72e8a366/main.js?cb=D...240 ms100 ms124 ms
pm-widget.taboola.com/nbc-today/pmk-20220605.14.js240 ms232 ms6.1 ms
www.googletagmanager.com/gtag/js?id=DC-8168974194 ms165 ms28 ms
www.today.com/akam/13/5f7b1e20161 ms143 ms3.0 ms
client.aps.amazon-adsystem.com/publisher.js159 ms132 ms26 ms
/pagead/managed/js/gpt/m202604090102/pubads_impl.js?cb=31...153 ms112 ms40 ms
cdn.cxense.com/cx.js139 ms101 ms10 ms
pub.doubleverify.com/dvtag/24187061/DV1473088/pub.js122 ms114 ms6.2 ms
cdn-gl.imrworldwide.com/novms/js/2/nlsSDK600.bundle.min.js114 ms93 ms19 ms
/z9gd/cfbf6814-ef53-427e-b99a-f3ba72e8a366/www.today.com/...99 ms97 ms0.4 ms
cdn.parsely.com/keys/today.com/p.js98 ms87 ms5.7 ms
securepubads.g.doubleclick.net/tag/js/gpt.js94 ms82 ms11 ms
/js/current/dpm_pixel_min.js?aid=nbcu-3dcc5105-25e1-45bf-...94 ms78 ms9.8 ms
nodeassets.nbcnews.com/_next/static/chunks/main-a20bf94e5e380099.js88 ms77 ms10 ms
ak.sail-horizon.com/spm/spm.v1.min.js58 ms47 ms10 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation7.3 s
Other2.1 s
Script Parsing & Compilation1.2 s
Style & Layout1.2 s
Rendering238 ms
Parse HTML & CSS220 ms
Garbage Collection138 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
The page has an unload handler in a sub frame.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 103.7 KiB
URLTransfer SizeEst Savings
/vendor/cfbf6814-ef53-427e-b99a-f3ba72e8a366/main.js?cb=D...193.2 KiB79.9 KiB
mps.nbcuni.com/fetch/ext/load-nbcnews-bento.js?nowrite=jq65.2 KiB21.1 KiB
cdn.cookielaw.org/opt-out/otCCPAiab.js5.8 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
cdn.taboola.com/libtrc/nbc-today/loader.js325.5 KiB
assets.adobedtm.com/launch-EN03682f66064449c8b87d78eae3e2fc57.min.js260.5 KiB
nodeassets.nbcnews.com/_next/static/chunks/pages/_app-4175b61308aab8be.js250.1 KiB
nodeassets.nbcnews.com/_next/static/chunks/5280-150f1a1de928b343.js194.8 KiB
/vendor/cfbf6814-ef53-427e-b99a-f3ba72e8a366/main.js?cb=D...193.8 KiB
/pagead/managed/js/gpt/m202604090102/pubads_impl.js?cb=31...187.6 KiB
cdn.tinypass.com/api/tinypass.min.js132.6 KiB
www.googletagmanager.com/gtag/js?id=DC-9899657131.2 KiB
www.googletagmanager.com/gtag/js?id=DC-8168974129.8 KiB
www.today.com/123.3 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
3rd Hour of TODAY li.menu-list-item > a.menu-list-item-link > picture > img
/image/upload/w_10000,h_74,q_80,c_fit,f_auto,q_auto:best/...
TODAY li.menu-list-item > a.menu-list-item-link > picture > img
/image/upload/w_10000,h_74,q_80,c_fit,f_auto,q_auto:best/...

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

●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 18 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 1 animated element found
●Network Requests
●Network Round Trip Times 130 ms
●Server Backend Latencies 220 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 30 ms
●Avoid large layout shifts 8 layout shifts found
○INP breakdown
88

Accessibility

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

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share
div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share
div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share
div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share div.share-inner > ul.share-ul > li.share-li > a.js-hfs-share
div.menu-section > ul.menu-list > li.menu-list-item > a.menu-list-item-link div.menu-section > ul.menu-list > li.menu-list-item > a.menu-list-item-link
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_baconCardsWidthByOne__d_vwp > div.styles_baconCardsWidthByOneTeasePictureLinkWrapper__rpL7L > div > a.styles_baconCardsWidthByOneTeasePictureLink__HvxdX div.styles_baconCardsWidthByOne__d_vwp > div.styles_baconCardsWidthByOneTeasePictureLinkWrapper__rpL7L > div > a.styles_baconCardsWidthByOneTeasePictureLink__HvxdX
div.styles_baconCardsWidthByOne__d_vwp > div.styles_baconCardsWidthByOneTeasePictureLinkWrapper__rpL7L > div > a.styles_baconCardsWidthByOneTeasePictureLink__HvxdX div.styles_baconCardsWidthByOne__d_vwp > div.styles_baconCardsWidthByOneTeasePictureLinkWrapper__rpL7L > div > a.styles_baconCardsWidthByOneTeasePictureLink__HvxdX
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
article.tease-card > div.tease-card__content--inner > div.tease-card__picture > a.tease-card__picture-link article.tease-card > div.tease-card__content--inner > div.tease-card__picture > a.tease-card__picture-link
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
article.tease-card > div.tease-card__content--inner > div.tease-card__picture > a.tease-card__picture-link article.tease-card > div.tease-card__content--inner > div.tease-card__picture > a.tease-card__picture-link
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
article.tease-card > div.tease-card__content--inner > div.tease-card__picture > a.tease-card__picture-link article.tease-card > div.tease-card__content--inner > div.tease-card__picture > a.tease-card__picture-link
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
article.tease-card > div.tease-card__content--inner > div.tease-card__picture > a.tease-card__picture-link article.tease-card > div.tease-card__content--inner > div.tease-card__picture > a.tease-card__picture-link
article.tease-card > div.tease-card__content--inner > div.tease-card__picture > a.tease-card__picture-link article.tease-card > div.tease-card__content--inner > div.tease-card__picture > a.tease-card__picture-link
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a
div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a div.styles_wrapper__fmKF7 > div.styles_contentItem__P6xSU > div.styles_teaseWrapper__LPUhJ > a

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
/ video div.videoCube > a.item-label-href > span.video-label-box > span.branding
○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Image elements do not have `[alt]` attributes that are redundant text.
●Identical links have the same purpose.
○`[accesskey]` values are unique
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Uses ARIA roles only on compatible elements
○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.
96

Best Practices

General

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
www.today.com/
Access to XMLHttpRequest at 'https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location?cb=1776800364457_rdf6zteckp' from origin 'https://www.today.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
/cookieconsentpub/v1/geo/location?cb=1776800364457_rdf6zt...
Failed to load resource: net::ERR_FAILED
●Uses HTTPS
●Avoids deprecated APIs
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
85

SEO

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.today.com/trendingSEE MORE
www.today.com/on-the-showSEE MORE
www.today.com/shop/on-the-showSEE MORE
www.today.com/food/today-show-best-recipesSEE MORE
www.today.com/foodSEE MORE
www.today.com/healthSEE MORE
www.today.com/parentsSEE MORE
www.today.com/shop/gift-guideSEE MORE
www.today.com/lifeSEE MORE
www.today.com/jokesSEE MORE
www.today.com/life/astrologySEE MORE
www.today.com/popcultureSEE MORE
www.today.com/life/relationshipsSEE MORE
www.nbcuniversal.com/privacyhere

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

Crawling and Indexing

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Image for Taboola Advertising Unit div#rbox-h2v > div#internal_trc_184891098 > div.videoCube > a.item-thumbnail-href
ALLIANZ AUTO / SPONSORED Voir les offres Petits rouleurs : les 3 formules d'All… div#rbox-h2v > div#internal_trc_184891098 > div.videoCube > a.item-label-href
Image for Taboola Advertising Unit div#rbox-h2v > div#internal_trc_549976620 > div.videoCube > a.item-thumbnail-href
FDJ / SPONSORED Jouer Maintenant Gagnez jusqu’à 20000€ avec ce jeu en ligne exc… div#rbox-h2v > div#internal_trc_549976620 > div.videoCube > a.item-label-href
Image for Taboola Advertising Unit div#rbox-h2v > div#internal_trc_1865899198 > div.videoCube > a.item-thumbnail-href
DIRECT ASSURANCE / SPONSORED En savoir plus Obtenir une assurance tous risques … div#rbox-h2v > div#internal_trc_1865899198 > div.videoCube > a.item-label-href

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

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

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