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

Audit breakdown by category with detailed findings.

46

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
/api/v1/loops/stellar/prod/118033-visit-canberra-loop.mp4...300.0 s7.6 MiB
registry.api.cnn.io/bundles/fave/ui-31f91f80/ui600.0 s2.3 MiB
/api/v1/loops/stellar/prod/flooding-in-wisconsinloop-hori...300.0 s1.9 MiB
/api/v1/loops/stellar/prod/desktop-ukr0416-6-imageslidesh...300.0 s1.7 MiB
/api/v1/images/stellar/prod/cnn-headlines-international-p...300.0 s1.1 MiB
/api/v1/images/stellar/prod/cnn-headlines-international-p...300.0 s612.9 KiB
registry.api.cnn.io/bundles/fave/boltPlayer-928190fd/boltPlayer600.0 s624.8 KiB
registry.api.cnn.io/bundles/fave/vendor-a5827f1f/vendor600.0 s339.5 KiB
/api/v1/images/stellar/prod/07-alfie-whiteman-untitled-fr...300.0 s301.4 KiB
z.cdp-dev.cnn.com/zion-web-client/3.0/zion-web-client.min.js0.0 ms269.4 KiB
/api/v1/images/stellar/prod/market39.jpg?c=16x9&q=h_720,w...300.0 s234.8 KiB
/api/v1/images/stellar/prod/c-gettyimages-2270756394.jpg?...300.0 s199.3 KiB
/media/sites/js/bundles/cnn-edition-adfuel-e30d4ed1f85bf5...7200.0 s215.4 KiB
/api/v1/images/stellar/prod/01-9493450.jpg?c=16x9&q=h_720...300.0 s139.4 KiB
/6adbc4e9-beda-4b9e-9117-43ec3a80e1d0-web.js900.0 s134.2 KiB
cdn.optimizely.com/public/125375509/s/landingprod.js600.0 s122.6 KiB
/api/v1/images/stellar/prod/07-alfie-whiteman-untitled-fr...300.0 s112.8 KiB
registry.api.cnn.io/bundles/fave/latest-4.x/js600.0 s116.6 KiB
/api/v1/images/stellar/prod/2020-06-10t000000z-1739405005...300.0 s97.6 KiB
cdn.tinypass.com/api/tinypass.min.js14400.0 s132.4 KiB
edition.cnn.com/wbdotp/scripttemplates/202601.2.0/otBannerSdk.js7200.0 s110.5 KiB
/api/v1/images/stellar/prod/gettyimages-2269936762.jpg?c=...300.0 s83.0 KiB
c.amazon-adsystem.com/aax2/apstag.js3600.0 s90.8 KiB
lightning.cnn.com/launch/7be62238e4c3/97fa00444124/launch-2878c87af5e3.min.js0.0 ms69.9 KiB
registry.api.cnn.io/bundles/fave/boltInstance-ea4aefab/boltInstance600.0 s75.6 KiB
cadmus.script.ac/d2uap9jskdzp2/script.js600.0 s73.8 KiB
client.aps.amazon-adsystem.com/publisher.js3600.0 s82.5 KiB
/api/v1/images/stellar/prod/01-9493450.jpg?c=3x2&q=h_533,...300.0 s67.5 KiB
/api/v1/images/stellar/prod/ap26095642336676.jpg?c=16x9&q...300.0 s65.2 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
/api/v1/images/stellar/prod/sipa-01219076-000049.jpg?c=16...300.0 s57.4 KiB
lightning.cnn.com/analytics/comscore/comscore-JS-7.13.1.min.js600.0 s53.6 KiB
/api/v1/images/stellar/prod/gettyimages-2219176261-202603...300.0 s45.6 KiB
/media/sites/js/bundles/cnn-edition-adfuel-body-4f5702656...7200.0 s43.6 KiB
registry.api.cnn.io/bundles/fave/4.33.0/css600.0 s34.4 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
/api/v1/images/stellar/prod/118866-childrensvillage-verti...300.0 s31.6 KiB
/api/v1/images/stellar/prod/2025-07-24t211944z-216166992-...300.0 s30.9 KiB
btloader.com/tag?o=5762268746743808&upapi=true300.0 s30.1 KiB
/api/v1/images/stellar/prod/gettyimages-2267440730.jpg?c=...300.0 s30.1 KiB
/api/v1/images/stellar/prod/gettyimages-904695948-cropped...300.0 s29.1 KiB
cdn.id5-sync.com/api/1.0/id5-api.js3600.0 s34.4 KiB
cdn.boomtrain.com/p13n/cnn/p13n.min.js3600.0 s31.6 KiB
/api/v1/images/stellar/prod/20260415-rose-perry.jpg?c=16x...300.0 s24.5 KiB
/api/v1/images/stellar/prod/img-7819-20241121031103327.jp...300.0 s24.1 KiB
edition.cnn.com/media/sites/cnn/app-store-cnn-app-qr-code.png60.0 s22.9 KiB
edition.cnn.com/media/sites/cnn/google-play-cnn-app-qr-code.png60.0 s22.3 KiB
/api/v1/images/stellar/prod/118839-factoryworkersai-verti...300.0 s22.8 KiB
/api/v1/images/stellar/prod/118832-artemisviralhats-vt-th...300.0 s22.8 KiB
/api/v1/images/stellar/prod/farmtornado.jpg?c=9x16&q=h_48...300.0 s22.7 KiB
/api/v1/images/stellar/prod/16x9-ai-generated-image-trump...300.0 s22.7 KiB
/api/v1/images/stellar/prod/118867-ahmedeldin-vrtc-thumb-...300.0 s22.0 KiB
/api/v1/images/stellar/prod/usatsi-10903768.jpg?c=2x3&q=h...300.0 s20.8 KiB
/api/v1/images/stellar/prod/gettyimages-1993523294.jpg?c=...300.0 s20.3 KiB
secure.cdn.fastclick.net/js/pubcid/latest/pubcid.min.js900.0 s21.7 KiB
/api/v1/images/stellar/prod/118891-formergovaccused-vrtc-...300.0 s20.1 KiB
static.criteo.net/js/ld/publishertag.js86400.0 s47.6 KiB
/api/v1/images/stellar/prod/ap26090549864153.jpg?c=16x9&q...300.0 s19.6 KiB
/api/v1/images/stellar/prod/2026-04-16t113110z-1297323644...300.0 s18.8 KiB
/api/v1/images/stellar/prod/260416-hegseth-vrtc.jpg?c=9x1...300.0 s18.3 KiB
/api/v1/images/stellar/prod/118877-northkoreanuclearprogr...300.0 s18.0 KiB
/api/v1/images/stellar/prod/118874-jose-andres-war-impact...300.0 s17.9 KiB
/api/v1/images/stellar/prod/thumbnail-military-audio-bloc...300.0 s17.7 KiB
/api/v1/images/stellar/prod/118873-trumpdietsodacancercle...300.0 s17.6 KiB
/api/v1/images/stellar/prod/npw-1.jpg?c=9x16&q=h_480,w_27...300.0 s17.6 KiB
/api/v1/images/stellar/prod/img-0172-crop.jpg?c=16x9&q=h_...300.0 s17.2 KiB
/api/v1/images/stellar/prod/trump-powell-thumb.jpg?c=9x16...300.0 s17.0 KiB
/api/v1/images/stellar/prod/118872-scott-bessent-gas-pric...300.0 s16.6 KiB
/api/v1/images/stellar/prod/2026-04-13t140707z-535342284-...300.0 s16.5 KiB
/api/v1/images/stellar/prod/gettyimages-2177651050.jpg?c=...300.0 s16.5 KiB
/api/v1/images/stellar/prod/118882-icefallsfromsky-vthumb...300.0 s16.5 KiB
/api/v1/images/stellar/prod/thumbnail-russia-drone-strike...300.0 s15.9 KiB
/api/v1/images/stellar/prod/copy-118862-trumpmeloniclean....300.0 s15.9 KiB
/api/v1/images/stellar/prod/c-gettyimages-1322256607-2026...300.0 s15.8 KiB
/launch/7be62238e4c3/97fa00444124/b278aa9dd3f4/EX33692741...0.0 ms14.4 KiB
/api/v1/images/stellar/prod/118857-popeleopresser-thumbna...300.0 s14.9 KiB
/api/v1/images/stellar/prod/260416-hegseth-00-00-05-06-st...300.0 s14.7 KiB
/api/v1/images/stellar/prod/118879-chinairanliterature-vr...300.0 s14.6 KiB
/api/v1/images/stellar/prod/260415-ebof-thumbnails-clean....300.0 s14.3 KiB
/api/v1/images/stellar/prod/mystic-20260415224327355.jpg?...300.0 s14.1 KiB
/api/v1/images/stellar/prod/118878-rubyrosekatyperryassau...300.0 s14.1 KiB
/api/v1/images/stellar/prod/2026-04-14t070222z-132391590-...300.0 s14.1 KiB
/api/v1/images/stellar/prod/02-002-002-29-04-ap2609844819...300.0 s13.5 KiB
tpc.googlesyndication.com/sodar/xdEizrWJ.js3000.0 s15.4 KiB
/api/v1/images/stellar/prod/118871-trumptaxreturns-thumb....300.0 s12.8 KiB
/api/v1/images/stellar/prod/118865-nicrobertsonpakistan-t...300.0 s12.3 KiB
/api/v1/images/stellar/prod/pope-leo-tyrant-cameroon-vrtc...300.0 s11.9 KiB
/api/v1/images/stellar/prod/gettyimages-2252173480.jpg?c=...300.0 s11.7 KiB
/api/v1/images/stellar/prod/gettyimages-2269975507.jpg?c=...300.0 s11.5 KiB
/api/v1/images/stellar/prod/20260415-alito-thomas.jpg?c=2...300.0 s11.4 KiB
/api/v1/images/stellar/prod/260416-hegseth-blockade-00-01...300.0 s11.1 KiB
/api/v1/images/stellar/prod/118860-notredametrump-00-00-1...300.0 s10.9 KiB
/api/v1/images/stellar/prod/new-atlantic-cover-1024x576.j...300.0 s10.8 KiB
static.chartbeat.com/js/chartbeat_video.js86400.0 s24.8 KiB
/api/v1/images/stellar/prod/gettyimages-2148534685.jpg?c=...300.0 s9.9 KiB
/api/v1/images/stellar/prod/gettyimages-2271560663.jpg?c=...300.0 s9.8 KiB
/api/v1/images/stellar/prod/c-gettyimages-2224032413.jpg?...300.0 s9.7 KiB
/jload?anId=925660&campId=1x1&pubId=38600317&chanId=90974...604800.0 s92.0 KiB
/api/v1/images/stellar/prod/gettyimages-2269609412.jpg?c=...300.0 s9.6 KiB
/api/v1/images/stellar/prod/gettyimages-2268145546.jpg?c=...300.0 s9.1 KiB
/launch/7be62238e4c3/97fa00444124/b278aa9dd3f4/RC5f713f27...0.0 ms8.0 KiB
/api/v1/images/stellar/prod/ap20106690900844a.JPG?c=16x9&...300.0 s8.0 KiB
/api/v1/images/stellar/prod/ap23270837333283.jpg?c=16x9&q...300.0 s8.0 KiB
/api/v1/images/stellar/prod/joeboystage.jpg?c=16x9&q=h_27...300.0 s7.5 KiB
/api/v1/images/stellar/prod/thumb-16x9-1.jpg?c=16x9&q=h_1...300.0 s7.5 KiB
/api/v1/images/stellar/prod/62-years-old-participant-fig-...300.0 s7.4 KiB
/publisher/925660/ebfdc39c-b42a-11f0-aa09-0e6958f30139.mi...0.0 ms6.9 KiB
/api/v1/images/stellar/prod/gettyimages-51246880.jpg?c=16...300.0 s7.2 KiB
cdn.ml314.com/taglw.js3600.0 s8.5 KiB
registry.api.cnn.io/bundles/fave/4.33.0/app600.0 s7.2 KiB
edition.cnn.com/wbdotp/scripttemplates/otSDKStub.js7200.0 s8.8 KiB
/launch/7be62238e4c3/97fa00444124/b278aa9dd3f4/RC0394f581...0.0 ms6.2 KiB
eus.rubiconproject.com/usync.js40138.0 s11.5 KiB
static.criteo.net/js/ld/publishertag.ids.js86400.0 s14.8 KiB
/api/v1/images/stellar/prod/thumb-22538895-3050065-716-th...300.0 s6.2 KiB
/api/v1/images/stellar/prod/310.jpg?c=16x9&q=h_144,w_256,...300.0 s5.9 KiB
cdn.cxense.com/cx.cce.js3600.0 s6.8 KiB
z.cdp-dev.cnn.com/zfm/zfh-3.js0.0 ms5.0 KiB
assets.bounceexchange.com/cache/7291/website-ad301b574258105d67ce15116c0f852e.js120.0 s5.1 KiB
/jsconfig/jload/925660?cbName=__IntegralAS__1538&anId=925...0.0 ms4.5 KiB
/api/v1/images/stellar/prod/gettyimages-2270899551.jpg?c=...300.0 s4.7 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
static.chartbeat.com/js/chartbeat_mab.js86400.0 s10.1 KiB
/api/v1/images/stellar/videothumbnails/99844400-45902584-...300.0 s3.9 KiB
tag.wknd.ai/7291/i.js60.0 s3.5 KiB
rules.quantcount.com/rules-p-D1yc5zQgjmqr5.js3600.0 s4.2 KiB
/wbdotp/consent/3d9a6f21-8e47-43f8-8d58-d86150f3e92b/0199...7200.0 s4.2 KiB
invstatic101.creativecdn.com/encrypted-signals/encrypted-tag-g.js0.0 ms2.9 KiB
sb.scorecardresearch.com/internal-cs/default/beacon.js86400.0 s6.7 KiB
/api/v1/images/stellar/prod/2026-04-01t141012z-1581774200...300.0 s2.6 KiB
/wbdotp/consent/3d9a6f21-8e47-43f8-8d58-d86150f3e92b/0199...7200.0 s2.5 KiB
www.i.cdn.cnn.com/zion/zion-mb.min.js0.0 ms1.8 KiB
/launch/7be62238e4c3/97fa00444124/b278aa9dd3f4/RC4bdaf299...0.0 ms1.8 KiB
edition.cnn.com/media/sites/cnn/video-placeholder.svg60.0 s1.7 KiB
experience.piano.io/xbuilder/experience/load?aid=RCoM2QBLpu1800.0 s1.9 KiB
edition.cnn.com/media/sites/cnn/icons/audio-icon-header.svg60.0 s1.6 KiB
edition.cnn.com/media/sites/cnn/icons/video-dark.svg60.0 s1.4 KiB
edition.cnn.com/media/sites/cnn/icons/video.svg60.0 s1.4 KiB
edition.cnn.com/media/sites/cnn/icons/video-icon-header.svg60.0 s1.4 KiB
edition.cnn.com/media/sites/cnn/icons/ui-caret-right-thick.svg60.0 s1.3 KiB
edition.cnn.com/media/sites/cnn/icons/ui-search.svg60.0 s1.3 KiB
/sync?c=16b6410431b6374e780104abb0443ca8&p=34747f0775f02a...0.0 ms1.3 KiB
edition.cnn.com/media/sites/cnn/icons/ui-caret-left-thick.svg60.0 s1.3 KiB
edition.cnn.com/media/sites/cnn/icons/ui-speech-bubble.svg60.0 s1.3 KiB
edition.cnn.com/media/sites/cnn/icons/gray-caret.svg60.0 s1.2 KiB
edition.cnn.com/media/sites/cnn/icons/live-tv-icon-header.svg60.0 s1.2 KiB
/launch/7be62238e4c3/97fa00444124/b278aa9dd3f4/RC0f55d142...0.0 ms1.1 KiB
id5-sync.com/c/963/0/8/1.gif?gdpr=0&gdpr_consent=&us_privacy=0.0 ms1.0 KiB
config.aps.amazon-adsystem.com/configs/32883600.0 s1.2 KiB
/state/js?website_id=7291&device_id=254086236027984680&vi...0.0 ms990 B
config.aps.amazon-adsystem.com/configs/e5a6f2d1-7642-4cc5-a917-96dbe8c3ed8f3600.0 s807 B
segment-data.zqtk.net/turner-47fcf6?url=https%3A%2F%2Fedition.cnn.com%2F185.0 s604 B
registry.api.cnn.io/bundles/fave/4.33.0/vendorHashes600.0 s545 B
/Repo/rep.gif?ver=3.3.0&typ=pgv&rnd=mo1qleqnlh9n7g7g&sid=...0.0 ms413 B
cdn3.optimizely.com/js/geo4.js0.0 ms324 B
/track/cmb/generic?ttd_pid=u40cpuw&ttd_tpi=1&gdpr=0&gdpr_...0.0 ms254 B
creativecdn.com/cm-notify?pi=uk-ozone-pbs&gdpr=0&gdpr_consent=&us_privacy=&tc=10.0 ms124 B
cdn.indexww.com/ht/htw-pixel.gif?086400.0 s246 B
eus.rubiconproject.com/usync.js40138.0 s0 B
cdn.indexww.com/ht/htw-pixel.gif?086400.0 s0 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.

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:221.756 source:map[column:822 line:20 type:source-location url: 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:6.939 source:map[column:47770 line:0 type:source-location url:https://z.cdp-dev.cnn.com/zion-web-client/3.0/zion-web-client.min.js urlProvider:network]] map[reflowTime:1.219 source:map[column:473 line:17331 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:3.895 source:map[column:588 line:17327 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:0.856 source:map[column:884 line:17328 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:0.175 source:map[column:1858 line:16652 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:0.937 source:map[column:865 line:16652 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:0.576 source:map[column:594 line:16652 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:7.936 source:map[column:1726 line:17331 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:1.308 source:map[column:244 line:16660 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:5.948 source:map[column:2004 line:17331 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:10.153 source:map[column:12519 line:17338 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:1.795 source:map[column:315 line:16304 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:0.886 source:map[column:96676 line:393 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:0.991 source:map[column:263676 line:0 type:source-location url:https://registry.api.cnn.io/bundles/fave/latest-4.x/js urlProvider:network]] map[reflowTime:66.776 source:map[type:text value:[unattributed]]] map[reflowTime:2.467 source:map[column:57 line:26 type:source-location url:https://static.chartbeat.com/js/chartbeat_video.js urlProvider:network]] map[reflowTime:1.647 source:map[column:124 line:25 type:source-location url:https://static.chartbeat.com/js/chartbeat_video.js urlProvider:network]] map[reflowTime:10.4 source:map[column:326247 line:0 type:source-location url:https://cdn.tinypass.com/api/tinypass.min.js urlProvider:network]] map[reflowTime:2.035 source:map[column:267896 line:0 type:source-location url:https://edition.cnn.com/media/sites/js/bundles/cnn-edition-adfuel-e30d4ed1f85bf55b7e150ee7e8bce42e790935484c341b93025c175bfac82243.min.js urlProvider:network]] map[reflowTime:1.728 source:map[column:351120 line:1344 type:source-location url:https://registry.api.cnn.io/bundles/fave/boltPlayer-928190fd/boltPlayer urlProvider:network]] map[reflowTime:2.927 source:map[column:961708 line:0 type:source-location url:https://registry.api.cnn.io/bundles/fave/vendor-a5827f1f/vendor urlProvider:network]] map[reflowTime:9.346 source:map[column:401544 line:1344 type:source-location url:https://registry.api.cnn.io/bundles/fave/boltPlayer-928190fd/boltPlayer urlProvider:network]] map[reflowTime:12.094 source:map[column:31053 line:7 type:source-location url:https://btloader.com/tag?o=5762268746743808&upapi=true urlProvider:network]] map[reflowTime:11.376 source:map[column:88235 line:2255 type:source-location url:https://registry.api.cnn.io/bundles/fave/ui-31f91f80/ui urlProvider:network]] map[reflowTime:14.429 source:map[column:434 line:16652 type:source-location url:https://edition.cnn.com/ urlProvider:network]] map[reflowTime:2.437 source:map[column:295381 line:0 type:source-location url:https://edition.cnn.com/media/sites/js/bundles/cnn-edition-adfuel-e30d4ed1f85bf55b7e150ee7e8bce42e790935484c341b93025c175bfac82243.min.js urlProvider:network]] map[reflowTime:0.859 source:map[column:63213 line:1 type:source-location url:https://assets.bounceexchange.com/assets/smart-tag/versioned/main-v2_a8ec0b4e51efd1e1ddbdf1b4c6576803.br.js urlProvider:network]] map[reflowTime:1.907 source:map[column:71622 line:5 type:source-location url:https://cdn.cxense.com/cx.js urlProvider:network]] map[reflowTime:8.715 source:map[column:238624 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604150101/pubads_impl.js?cb=31097866 urlProvider:network]] map[reflowTime:0.841 source:map[column:49639 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604150101/pubads_impl.js?cb=31097866 urlProvider:network]] map[reflowTime:1.674 source:map[column:103091 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604150101/pubads_impl.js?cb=31097866 urlProvider:network]] map[reflowTime:5.094 source:map[column:243231 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604150101/pubads_impl.js?cb=31097866 urlProvider:network]] map[reflowTime:0.901 source:map[column:62628 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604150101/pubads_impl.js?cb=31097866 urlProvider:network]] map[reflowTime:0.452 source:map[column:87994 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604150101/pubads_impl.js?cb=31097866 urlProvider:network]] map[reflowTime:1.508 source:map[column:399614 line:0 type:source-location url:https://cdn.tinypass.com/api/tinypass.min.js urlProvider:network]] map[reflowTime:2.464 source:map[column:24129 line:2 type:source-location url:https://c.amazon-adsystem.com/aax2/apstag.js urlProvider:network]] map[reflowTime:202.515 source:map[column:11886 line:6 type:source-location url: urlProvider:network]] map[reflowTime:19.241 source:map[column:19312 line:51 type:source-location url: 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
/api/v1/images/stellar/prod/cnn-headlines-international-p...1.1 MiB1.1 MiB
div#player-player-cms.cnn.com/_components/video-player/instances/clnm1qpgd00003b6irfa0z60h@published-pui-wrapper > div.sc-eaIzCS > div.sc-eaIzCS > div.sc-eaIzCS div#player-player-cms.cnn.com/_components/video-player/instances/clnm1qpgd00003b6irfa0z60h@published-pui-wrapper > div.sc-eaIzCS > div.sc-eaIzCS > div.sc-eaIzCS
/api/v1/images/stellar/prod/cnn-headlines-international-p...612.3 KiB527.9 KiB
Broken concrete hangs from the first floor as people work to clear rubble at th… div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/c-gettyimages-2270756394.jpg?...198.7 KiB163.9 KiB
Market39.jpg div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/market39.jpg?c=16x9&q=h_720,w...234.2 KiB162.0 KiB
Gatorade is getting a major makeover, consisting of new drinks, powders and pac… div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/2020-06-10t000000z-1739405005...97.0 KiB81.4 KiB
While Italy remains a popular destination for tourists, the country is cracking… div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/gettyimages-2269936762.jpg?c=...82.4 KiB69.6 KiB
A crane being used to construct the new White House ballroom is seen next to th… div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/ap26095642336676.jpg?c=16x9&q...64.6 KiB56.6 KiB
Artist Alberto Burri poured tons of cement over the ruins of Gibellina in Sicil… div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/sipa-01219076-000049.jpg?c=16...56.8 KiB48.8 KiB
If you're getting money back on your federal (and maybe even state) income taxe… div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/gettyimages-2219176261-202603...45.0 KiB32.4 KiB
RICHMOND, VA - JANUARY 13: From left, Attorney Elect General Mark Herring and h… div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/gettyimages-904695948-cropped...28.7 KiB24.5 KiB
U.S. President Donald Trump and Federal Reserve Chair Jerome Powell speak durin… div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/2025-07-24t211944z-216166992-...30.3 KiB21.8 KiB
Ruby Rose and Katy Perry div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/20260415-rose-perry.jpg?c=16x...23.9 KiB20.5 KiB
This AI-generated fake image shared by President Donald Trump to the social med… div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/16x9-ai-generated-image-trump...22.5 KiB19.3 KiB
American livestreamer indicted in South Korea over offensive antics div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/img-7819-20241121031103327.jp...23.5 KiB16.9 KiB
118839_FactoryWorkersAI_Vertical_Clean_Thumb.jpg div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/118839-factoryworkersai-verti...22.2 KiB16.0 KiB
FIFA President Gianni Infantino follows a friendly soccer match between Iran an… div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/ap26090549864153.jpg?c=16x9&q...19.1 KiB13.7 KiB
118866_ChildrensVillage_Vertical_1.00_00_13_10.Still001.jpg div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/118866-childrensvillage-verti...31.0 KiB9.9 KiB
Visualization of ocean currents in the North Atlantic. The colors show sea surf… div.image > div.image__container > picture.image__picture > img.image__dam-img
/api/v1/images/stellar/prod/new-atlantic-cover-1024x576.j...10.2 KiB4.2 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-1-IMG
nodeLabel: Broken concrete hangs from the first floor as people work to clear rubble at th…
path: 1,HTML,1,BODY,3,DIV,3,SECTION,0,SECTION,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,1,DIV,0,DIV,3,DIV,0,DIV,0,UL,0,LI,1,A,0,DIV,0,DIV,0,DIV,0,DIV,0,PICTURE,4,IMG
selector: div.image > div.image__container > picture.image__picture > img.image__dam-img
snippet: <img src="https://media.cnn.com/api/v1/images/stellar/prod/c-gettyimages-2270756394.…" alt="Broken concrete hangs from the first floor as people work to clear rubble …" class="image__dam-img" onload="this.classList.remove('image__dam-img--loading')" onerror="imageLoadError(this)" height="1601" width="2400" style="--image-desktop-url: url(&quot;https://media.cnn.com/api/v1/images/stellar/prod/…;" data-img-css-vars="--image-desktop-url,--image-desktop-url-2x,--image-desktop-url-3x,--image-…">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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

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: 405 ms
URLTime Spent
cnn.com/203 ms
www.cnn.com/202 ms
edition.cnn.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 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: 120 ms 1.8 MiB
URLTransfer SizeEst Savings
registry.api.cnn.io/bundles/fave/boltPlayer-928190fd/boltPlayer624.3 KiB325.4 KiB
registry.api.cnn.io/bundles/fave/ui-31f91f80/ui2.3 MiB259.8 KiB
registry.api.cnn.io/bundles/fave/vendor-a5827f1f/vendor329.0 KiB227.9 KiB
edition.cnn.com/173.3 KiB114.7 KiB
z.cdp-dev.cnn.com/zion-web-client/3.0/zion-web-client.min.js268.7 KiB97.4 KiB
/pagead/managed/js/gpt/m202604150101/pubads_impl.js?cb=31...189.2 KiB93.5 KiB
/media/sites/js/bundles/cnn-edition-adfuel-e30d4ed1f85bf5...215.1 KiB83.8 KiB
cdn.tinypass.com/api/tinypass.min.js131.9 KiB82.3 KiB
accounts.google.com/gsi/client95.3 KiB80.1 KiB
edition.cnn.com/wbdotp/scripttemplates/202601.2.0/otBannerSdk.js110.0 KiB63.9 KiB
/assets/smart-tag/versioned/main-v2_a8ec0b4e51efd1e1ddbdf...116.2 KiB60.7 KiB
lightning.cnn.com/analytics/comscore/comscore-JS-7.13.1.min.js53.3 KiB41.5 KiB
cdn.optimizely.com/public/125375509/s/landingprod.js122.0 KiB41.4 KiB
c.amazon-adsystem.com/aax2/apstag.js90.4 KiB40.4 KiB
registry.api.cnn.io/bundles/fave/latest-4.x/js100.1 KiB38.4 KiB
/jload?anId=925660&campId=1x1&pubId=38600317&chanId=90974...91.8 KiB37.1 KiB
client.aps.amazon-adsystem.com/publisher.js82.1 KiB33.5 KiB
registry.api.cnn.io/bundles/fave/boltInstance-ea4aefab/boltInstance75.0 KiB32.5 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB30.3 KiB
static.criteo.net/js/ld/publishertag.js47.3 KiB29.9 KiB
cdn.cxense.com/cx.js37.5 KiB21.8 KiB
/assets/smart-tag/versioned/ads-v2_fdaa8d77359124608f52c1...41.5 KiB21.3 KiB
about:srcdoc71.9 KiB20.8 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
edition.cnn.com/28.3 s2.2 s124 ms
Unattributable1.6 s191 ms0.0 ms
registry.api.cnn.io/bundles/fave/vendor-a5827f1f/vendor766 ms191 ms41 ms
cdn.cxense.com/cx.js743 ms158 ms4.2 ms
/6adbc4e9-beda-4b9e-9117-43ec3a80e1d0-web.js710 ms349 ms21 ms
/ads/c54c6c18/web.js?&accountId=1635c534&clickUrl=https%3...665 ms569 ms67 ms
cadmus.script.ac/d2uap9jskdzp2/script.js651 ms573 ms26 ms
/pagead/managed/js/gpt/m202604150101/pubads_impl.js?cb=31...605 ms516 ms23 ms
cdn.optimizely.com/public/125375509/s/landingprod.js498 ms367 ms19 ms
registry.api.cnn.io/bundles/fave/boltPlayer-928190fd/boltPlayer480 ms337 ms110 ms
/cache/7291/campaigns/2601531-0c875936fd6a509b9445fb7d9a5...369 ms342 ms1.9 ms
/media/sites/js/bundles/cnn-edition-adfuel-body-4f5702656...337 ms318 ms14 ms
registry.api.cnn.io/bundles/fave/boltInstance-ea4aefab/boltInstance326 ms240 ms12 ms
/media/sites/js/bundles/cnn-edition-adfuel-e30d4ed1f85bf5...264 ms234 ms28 ms
cdn.tinypass.com/api/tinypass.min.js240 ms192 ms15 ms
/jsconfig/jload/925660?cbName=__IntegralAS__1538&anId=925...179 ms143 ms0.2 ms
registry.api.cnn.io/bundles/fave/ui-31f91f80/ui143 ms35 ms108 ms
lightning.cnn.com/launch/7be62238e4c3/97fa00444124/launch-2878c87af5e3.min.js140 ms110 ms22 ms
btloader.com/tag?o=5762268746743808&upapi=true129 ms108 ms4.4 ms
client.aps.amazon-adsystem.com/publisher.js104 ms83 ms19 ms
/pagead/managed/js/activeview/current/ufs_web_display.js93 ms79 ms7.9 ms
static.chartbeat.com/js/chartbeat_video.js81 ms62 ms2.9 ms
registry.api.cnn.io/bundles/fave/latest-4.x/js80 ms64 ms12 ms
edition.cnn.com/wbdotp/scripttemplates/202601.2.0/otBannerSdk.js77 ms56 ms17 ms
c.amazon-adsystem.com/aax2/apstag.js70 ms45 ms21 ms
/assets/smart-tag/versioned/main-v2_a8ec0b4e51efd1e1ddbdf...68 ms48 ms18 ms
/state/js?website_id=7291&device_id=254086236027984680&vi...62 ms57 ms0.1 ms
z.cdp-dev.cnn.com/zion-web-client/3.0/zion-web-client.min.js60 ms32 ms9.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Other17.0 s
Style & Layout9.0 s
Script Evaluation8.2 s
Rendering3.0 s
Script Parsing & Compilation876 ms
Parse HTML & CSS253 ms
Garbage Collection163 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
The page has an unload handler in a sub frame.Actionable

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 188.6 KiB

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
Minify JavaScript
User Timing marks and measures 249 user timings
Avoid long main-thread tasks 20 long tasks found
Image elements have explicit `width` and `height`
Network Requests
Network Round Trip Times 250 ms
Server Backend Latencies 1,250 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 0 ms
Avoid large layout shifts 3 layout shifts found
INP breakdown
Avoid non-composited animations
90

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

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#google_ads_iframe_/8663477/CNNi/homepage/landing_0__container__ > div.celtra-ad-inline-host > div.notranslate > iframe div#google_ads_iframe_/8663477/CNNi/homepage/landing_0__container__ > div.celtra-ad-inline-host > div.notranslate > iframe

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.container__field-wrapper > ul.container__field-links > li.card > a.container__link div.container__field-wrapper > ul.container__field-links > li.card > a.container__link
div.container__field-wrapper > ul.container__field-links > li.card > a.container__link div.container__field-wrapper > ul.container__field-links > li.card > a.container__link

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
China li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Europe li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
India li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Facts First li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
CNN Polls li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Tech li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Media li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Pre-markets li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
After-Hours li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Fear & Greed li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Fitness li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Food li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Sleep li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Mindfulness li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Relationships li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Movies li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Television li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Celebrity li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Arts li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Design li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Fashion li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Luxury li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Beauty li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Video li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Destinations li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Food & Drink li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Stay li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
News li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Videos li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Football li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Tennis li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Golf li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Motorsport li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
US Sports li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Olympics li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Space li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Life li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Solutions li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Weather li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Video li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Climate li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
As Equals li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Call to Earth li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Freedom Project li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Impact Your World li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Inside Africa li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
CNN Heroes li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Daily Crossword li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Jumble Crossword li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Photo Shuffle li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Sudoblock li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
Investigations li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
CNN Profiles li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
CNN Leadership li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-link
CNN Newsletters li.subnav__section > ul.subnav__subsections > li.subnav__subsection > a.subnav__subsection-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
Sign in div#desktop-header-account-nav > nav.user-account-nav > div.user-account-nav__icons > button.user-account-nav__text-button
Watch div.footer__inner > div.footer__row > div.footer__right > a.footer__video-link
Listen div.footer__inner > div.footer__row > div.footer__right > a.footer__audio-link
Sign in div#desktop-footer-account-nav > nav.user-account-nav > div.user-account-nav__icons > button.user-account-nav__text-button
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
Image elements have `[alt]` attributes
Form elements have associated labels
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
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
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
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Identical links have the same purpose.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
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 buttons have discernible text.
`<input type="image">` elements have `[alt]` text
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
Select elements have associated label elements.
Skip links are focusable.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
`[lang]` attributes have a valid value
Tables have different content in the summary attribute and `<caption>`.
All heading elements contain content.
Uses ARIA roles only on compatible elements
Image elements do not have `[alt]` attributes that are redundant text.
Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Specifying overflow: visible on img, video and canvas tags may cause them to produce visual content outside of the element bounds. See https://github.com/WICG/shared-element-transitions/blob/main/debugging_overflow_on_images.md.
edition.cnn.com/ line 5521, col -1
Topics
SharedStorage
Unload event listeners are deprecated and will be removed.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
Attestation check for Protected Audience on https://a.teads.tv failed.
Attestation check for Protected Audience on https://btlr.sharethrough.com failed.
Attestation check for Protected Audience on https://btlr.sharethrough.com failed.
Attestation check for Protected Audience on https://direct.adsrvr.org failed.
Attestation check for Protected Audience on https://elb.the-ozone-project.com failed.
Attestation check for Protected Audience on https://fastlane.rubiconproject.com failed.
Attestation check for Protected Audience on https://grid-bidder.criteo.com failed.
Attestation check for Protected Audience on https://hbopenbid.pubmatic.com failed.
Attestation check for Protected Audience on https://htlb.casalemedia.com failed.
Attestation check for Protected Audience on https://ib.adnxs.com failed.
Player | Player received error, stopping playback session: c4f2ce15-af94-4e93-8dd2-57ee4d5f8f40 code:1K-0043 message: NoKeySystemAvailable: No key system available on device undefined
Uses HTTPS
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No issues in the `Issues` panel in Chrome Devtools
Ensure CSP is effective against XSS attacks
Use a strong HSTS policy
Ensure proper origin isolation with COOP
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
85

SEO

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

Crawling and Indexing

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Line #ContentError
1Unknown ErrorSyntax not understood

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

Content Best Practices

Canonical links suggest which URL to show in search results. Learn more about canonical links.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

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

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
Links have descriptive text
Links are crawlable
Image elements have `[alt]` attributes
Document has a valid `hreflang`

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