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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.

29

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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:45.015 source:map[type:text value:[unattributed]]] map[reflowTime:10.115 source:map[column:104234 line:1 type:source-location url:https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-web-nl-web.22ecd6bfac93de604efec0b75b2c796ee1675f92.js urlProvider:network]] map[reflowTime:11.409 source:map[column:10385 line:1 type:source-location url:https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-web-nl-web.22ecd6bfac93de604efec0b75b2c796ee1675f92.js urlProvider:network]] map[reflowTime:2.472 source:map[column:25 line:0 type:source-location url: urlProvider:network]] map[reflowTime:3.061 source:map[column:33 line:0 type:source-location url: urlProvider:network]] map[reflowTime:2.539 source:map[column:33 line:0 type:source-location url: urlProvider:network]] map[reflowTime:3.047 source:map[column:3936 line:0 type:source-location url:https://www.telegraaf.nl/_next/static/chunks/8934-7d8f978be79edb97.js urlProvider:network]] map[reflowTime:1.732 source:map[column:45999 line:0 type:source-location url:https://cdn.kaching.eu.com/latest/tel/kaching.js urlProvider:network]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
Pokeren om Straat van Hormuz: ’Niemand in de Amerikaanse regering lijkt te wete… article.TeaserWrapper_teaser-wrapper__v1JTi > a > picture > img.text-on-image-teaser_customImage__hiouD
/public/incoming/gi6ric-ci-trump.gif/alternates/ONE_ONE_7...5.2 MiB5.1 MiB
Amerikaanse LUCAS-drones (links) en een Iraanse Shahed-drone (rechts). a.TextOnImageTeaser_text-on-image-teaser__link__04WDr > figure.TeaserImage_teaser-image__1zOV8 > div.TeaserImage_teaser-image__image__xdFmH > img.native-teaser-image_nativeTeaserImage__3O3MX
/public/incoming/hyj8c5-combi-gif-lucas-x-shahed.gif/alte...1.3 MiB1.3 MiB
Waar Koningsdag in de hoofdstad ooit draaide om spontaniteit, een biertje op st… a.TextOnImageTeaser_text-on-image-teaser__link__04WDr > figure.TeaserImage_teaser-image__1zOV8 > div.TeaserImage_teaser-image__image__xdFmH > img.native-teaser-image_nativeTeaserImage__3O3MX
/public/incoming/c99etp-20250612-regio-ad-tg001-tlg--anp-...192.9 KiB157.0 KiB
Wat is er precies gebeurd bij de datalekken van Odido, Basic-Fit en Booking.com… a.TextOnImageTeaser_text-on-image-teaser__link__04WDr > figure.TeaserImage_teaser-image__1zOV8 > div.TeaserImage_teaser-image__image__xdFmH > img.native-teaser-image_nativeTeaserImage__3O3MX
/public/incoming/k1wrs1-combo-datalek.jpg/alternates/FOUR...118.5 KiB93.9 KiB
Door te stoppen met avondsnacken functioneren de cellen in je brein beter, waar… a.TextOnImageTeaser_text-on-image-teaser__link__04WDr > figure.TeaserImage_teaser-image__1zOV8 > div.TeaserImage_teaser-image__image__xdFmH > img.native-teaser-image_nativeTeaserImage__3O3MX
/public/incoming/ugcz89-gettyimages-481384634.jpg/alterna...95.6 KiB75.8 KiB
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
/images/lib/basic/sport/football/club/logo/large/4222.png37.9 KiB37.6 KiB
YouTuber ontkent fatale ’prank’, maar in video is het bizarre telefoongesprek t… article.TeaserWrapper_teaser-wrapper__v1JTi > a > picture > img.text-on-image-teaser_customImage__hiouD
/public/incoming/rl6zx7-ci-youtuber-v5.jpg/alternates/ONE...119.6 KiB35.0 KiB
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
/images/lib/basic/sport/football/club/logo/large/4496.png29.1 KiB28.8 KiB
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
/images/lib/basic/sport/football/club/logo/large/4017.png28.0 KiB27.7 KiB
’Graaiende’ Meghan onder vuur na blunder op Bondi Beach: ’Shop de look!’ article.TeaserWrapper_teaser-wrapper__v1JTi > a > picture > img.text-on-image-teaser_customImage__hiouD
/public/incoming/dzhxug-ci-meghan-v2.jpg/alternates/ONE_O...111.4 KiB26.8 KiB
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
/images/lib/basic/sport/football/club/logo/large/4073.png22.2 KiB21.9 KiB
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
/images/lib/basic/sport/football/club/logo/large/4486.png22.1 KiB21.8 KiB
Bewoners Loosdrecht woedend om schijnbeweging gemeente article.TeaserWrapper_teaser-wrapper__v1JTi > a > picture > img.text-on-image-teaser_customImage__hiouD
/public/incoming/jnfx3u-ci-loosdrecht.jpg/alternates/ONE_...104.8 KiB20.2 KiB
Diplomatieke rel tussen Rome en Moskou: Giorgia Meloni op Russische staats-tv e… article.TeaserWrapper_teaser-wrapper__v1JTi > a > picture > img.text-on-image-teaser_customImage__hiouD
/public/incoming/sclaaq-ci-meloni.jpg/alternates/ONE_ONE_...102.9 KiB18.3 KiB
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
/images/lib/basic/sport/football/club/logo/large/4072.png16.0 KiB15.7 KiB
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
/images/lib/basic/sport/football/club/logo/large/4452.png6.4 KiB6.1 KiB
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
/images/lib/basic/sport/football/club/logo/large/4014.png4.8 KiB4.6 KiB
Een Porsche 911, niet het exemplaar uit het artikel. figure.TeaserImage_teaser-image__1zOV8 > div.TeaserImage_teaser-image__image__xdFmH > picture > img.native-teaser-image_nativeTeaserImage__3O3MX
/public/incoming/4vpmwy-anp-436588429.jpg/alternates/SIXT...18.0 KiB4.5 KiB
Donald Trump werd verheerlijkt door het populaire model Emily Hart. Ze blijkt n… figure.TeaserImage_teaser-image__1zOV8 > div.TeaserImage_teaser-image__image__xdFmH > picture > img.native-teaser-image_nativeTeaserImage__3O3MX
/public/buitenland/eo4j9m-whatsapp-image-2026-04-22-at-20...17.7 KiB4.2 KiB
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
/images/lib/basic/sport/football/club/logo/large/102706.png4.4 KiB4.1 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-12-IMG
nodeLabel: Bewoners Loosdrecht woedend om schijnbeweging gemeente
path: 1,HTML,1,BODY,7,DIV,2,MAIN,3,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,DIV,1,DIV,0,ARTICLE,0,A,0,PICTURE,2,IMG
selector: article.TeaserWrapper_teaser-wrapper__v1JTi > a > picture > img.text-on-image-teaser_customImage__hiouD
snippet: <img loading="eager" src="https://prod-img.telegraaf.nl/public/incoming/jnfx3u-ci-loosdrecht.jpg/alt…" alt="Bewoners Loosdrecht woedend om schijnbeweging gemeente" class="text-on-image-teaser_customImage__hiouD sixteenNineBreakpointLg native-tea…" srcset="https://prod-img.telegraaf.nl/public/incoming/jnfx3u-ci-loosdrecht.jpg/alt…" sizes="(max-width: 767px) 100vw, 848px">

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
value: No additional origins are good candidates for preconnecting

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
prod-tmg.mhtr.be/public/tr/tracker.min.js14400.0 s156.9 KiB
/11ef8ac9-6270-4d5e-8b99-8d6a5bd60059/loader.js?target=ww...7200.0 s134.9 KiB
cdn.kaching.eu.com/prebid/10.21.0/nl/prebid.js86400.0 s138.3 KiB
aswpsdkus.com/notify/v1/ua-sdk.min.js300.0 s40.5 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
/images/lib/basic/sport/football/club/logo/large/4222.png86400.0 s38.5 KiB
cdn.kaching.eu.com/latest/tel/kaching.js86400.0 s32.0 KiB
/images/lib/basic/sport/football/club/logo/large/4496.png86400.0 s29.6 KiB
/images/lib/basic/sport/football/club/logo/large/4017.png86400.0 s28.6 KiB
/images/lib/basic/sport/football/club/logo/large/4073.png86400.0 s22.7 KiB
/images/lib/basic/sport/football/club/logo/large/4486.png86400.0 s22.6 KiB
aswpsdkus.com/notify/v1/ua-html-prompt.min.js300.0 s9.2 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...14400.0 s11.6 KiB
shared.mediahuis.be/extra/ciam/mh/auth0-integration.js86400.0 s17.4 KiB
/images/lib/basic/sport/football/club/logo/large/4072.png86400.0 s16.5 KiB
/images/lib/basic/sport/football/club/logo/large/4452.png86400.0 s6.9 KiB
/images/lib/basic/sport/football/club/logo/large/4014.png86400.0 s5.4 KiB
/images/lib/basic/sport/football/club/logo/large/102706.png86400.0 s4.9 KiB
/images/lib/basic/sport/football/club/logo/large/100098.png86400.0 s4.6 KiB
cdn.kaching.eu.com/latest/tel/dmp.js86400.0 s3.6 KiB
boot.pbstck.com/v1/tag/37101d8f-0db8-4184-84a4-0835e4e4dd6f1200.0 s913 B
applets.ebxcdn.com/ebx.js7200.0 s1.0 KiB
focus.telegraaf.nl/raw/prod-mh-design-system/7.26.0/tel/logos/logo-main.png864000.0 s6.3 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: 2.4 s
URLTime Spent
telegraaf.nl/756 ms
www.telegraaf.nl/787 ms
/authorize?response_type=code&client_id=lZcQ2JZMSWhhr4KAS...893 ms
/auth/callback/login?error=login_required&error_descripti...0.0 ms
www.telegraaf.nl/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: 300 ms 74.4 KiB
URLTransfer SizeEst Savings
www.telegraaf.nl/_next/static/css/0e61363b391bf5c1.css35.8 KiB20.5 KiB
www.telegraaf.nl/_next/static/css/4e3ec3b7edd0936f.css16.2 KiB15.2 KiB
16.9 KiB14.3 KiB
www.telegraaf.nl/_next/static/css/7fb7cfb72a0fb419.css12.6 KiB12.4 KiB
www.telegraaf.nl/_next/static/css/61524148f3e0d582.css14.3 KiB12.1 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: 910 ms 1.2 MiB
URLTransfer SizeEst Savings
cdn.kaching.eu.com/prebid/10.21.0/nl/prebid.js137.8 KiB137.6 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31...187.7 KiB130.1 KiB
www.telegraaf.nl/_next/static/chunks/pages/_app-9f68971ab19cc48d.js198.0 KiB118.8 KiB
prod-tmg.mhtr.be/public/tr/tracker.min.js156.4 KiB112.1 KiB
www.telegraaf.nl/_next/static/chunks/2248-e36bd15ff5938687.js179.7 KiB110.5 KiB
cdn.kaching.eu.com/prebid/10.21.0/nl/prebid.js137.8 KiB101.4 KiB
/gtm.js?id=GTM-TCTRVFNT&gtm_auth=luqLJVHzZCZ8FRNw0psBqA&g...172.4 KiB67.5 KiB
www.googletagmanager.com/gtag/js?id=G-4S0SMBYPTG&cx=c&gtm=4e64k0161.1 KiB66.0 KiB
/gtm.js?id=GTM-PLCMDRH4&gtm_auth=CxJv3UN7_Ke3WjOi3uYfVQ&g...142.2 KiB52.8 KiB
www.telegraaf.nl/_next/static/chunks/427ddc6b-10f35a46b3e2cd4b.js76.4 KiB51.0 KiB
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk....102.5 KiB43.6 KiB
www.telegraaf.nl/_next/static/chunks/8934-7d8f978be79edb97.js71.8 KiB36.7 KiB
www.telegraaf.nl/_next/static/chunks/ef2b5962-835229fb133152b0.js41.7 KiB36.0 KiB
aswpsdkus.com/notify/v1/ua-sdk.min.js40.1 KiB29.2 KiB
www.telegraaf.nl/_next/static/chunks/framework-136df7d2ca0cb23d.js64.9 KiB28.8 KiB
www.telegraaf.nl/_next/static/chunks/6602-93910b60495901be.js41.2 KiB28.2 KiB
securepubads.g.doubleclick.net/tag/js/gpt.js33.8 KiB24.0 KiB
cdn.cxense.com/cx.js37.5 KiB22.6 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
www.telegraaf.nl/2.8 s199 ms7.3 ms
www.telegraaf.nl/_next/static/chunks/framework-136df7d2ca0cb23d.js2.4 s2.2 s27 ms
Unattributable2.0 s245 ms0.0 ms
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-w...1.6 s1.3 s38 ms
/gtm.js?id=GTM-TCTRVFNT&gtm_auth=luqLJVHzZCZ8FRNw0psBqA&g...443 ms338 ms74 ms
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk....439 ms336 ms47 ms
www.googletagmanager.com/gtag/js?id=G-4S0SMBYPTG&cx=c&gtm=4e64k0395 ms332 ms58 ms
cdn.kaching.eu.com/prebid/10.21.0/nl/prebid.js353 ms194 ms158 ms
www.telegraaf.nl/cdn-cgi/challenge-platform/scripts/jsd/main.js341 ms272 ms3.2 ms
www.telegraaf.nl/_next/static/chunks/pages/index-fa48c3b5e14ae0b0.js299 ms298 ms0.3 ms
/gtm.js?id=GTM-PLCMDRH4&gtm_auth=CxJv3UN7_Ke3WjOi3uYfVQ&g...287 ms229 ms52 ms
prod-tmg.mhtr.be/public/tr/tracker.min.js277 ms158 ms87 ms
boot.pbstck.com/v1/tag/37101d8f-0db8-4184-84a4-0835e4e4dd6f264 ms154 ms68 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31...238 ms152 ms71 ms
www.telegraaf.nl/_next/static/chunks/pages/_app-9f68971ab19cc48d.js229 ms138 ms89 ms
/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/src_...187 ms156 ms1.4 ms
securepubads.g.doubleclick.net/tag/js/gpt.js132 ms88 ms43 ms
aswpsdkus.com/notify/v1/ua-sdk.min.js109 ms76 ms26 ms
www.telegraaf.nl/_next/static/chunks/main-58fe3fddd028f4c2.js96 ms80 ms15 ms
/11ef8ac9-6270-4d5e-8b99-8d6a5bd60059/loader.js?target=ww...86 ms17 ms69 ms
cdn.cxense.com/cx.js85 ms71 ms14 ms
www.telegraaf.nl/_next/static/chunks/2248-e36bd15ff5938687.js81 ms1.6 ms79 ms
www.telegraaf.nl/_next/static/chunks/5277.624bd505bb6cb2d1.js60 ms37 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 Evaluation7.3 s
Other2.5 s
Style & Layout1.2 s
Script Parsing & Compilation1.2 s
Rendering754 ms
Parse HTML & CSS403 ms
Garbage Collection272 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

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
/public/incoming/gi6ric-ci-trump.gif/alternates/ONE_ONE_7...5.2 MiB
/public/incoming/hyj8c5-combi-gif-lucas-x-shahed.gif/alte...1.3 MiB
www.telegraaf.nl/_next/static/chunks/pages/_app-9f68971ab19cc48d.js198.1 KiB
/public/incoming/c99etp-20250612-regio-ad-tg001-tlg--anp-...193.2 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31...187.7 KiB
www.telegraaf.nl/_next/static/chunks/2248-e36bd15ff5938687.js180.0 KiB
www.telegraaf.nl/_next/static/media/NotoSerif-ExtraBold.d540d407.woff2172.9 KiB
/gtm.js?id=GTM-TCTRVFNT&gtm_auth=luqLJVHzZCZ8FRNw0psBqA&g...172.4 KiB
www.googletagmanager.com/gtag/js?id=G-4S0SMBYPTG&cx=c&gtm=4e64k0161.2 KiB
www.telegraaf.nl/_next/static/media/NotoSerif-Bold.3f10dca9.woff2160.6 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
Bewoners Loosdrecht woedend om schijnbeweging gemeente article.TeaserWrapper_teaser-wrapper__v1JTi > a > picture > img.text-on-image-teaser_customImage__hiouD
/public/incoming/jnfx3u-ci-loosdrecht.jpg/alternates/ONE_...
YouTuber ontkent fatale ’prank’, maar in video is het bizarre telefoongesprek t… article.TeaserWrapper_teaser-wrapper__v1JTi > a > picture > img.text-on-image-teaser_customImage__hiouD
/public/incoming/rl6zx7-ci-youtuber-v5.jpg/alternates/ONE...
Pokeren om Straat van Hormuz: ’Niemand in de Amerikaanse regering lijkt te wete… article.TeaserWrapper_teaser-wrapper__v1JTi > a > picture > img.text-on-image-teaser_customImage__hiouD
/public/incoming/gi6ric-ci-trump.gif/alternates/ONE_ONE_7...
’Graaiende’ Meghan onder vuur na blunder op Bondi Beach: ’Shop de look!’ article.TeaserWrapper_teaser-wrapper__v1JTi > a > picture > img.text-on-image-teaser_customImage__hiouD
/public/incoming/dzhxug-ci-meghan-v2.jpg/alternates/ONE_O...
Diplomatieke rel tussen Rome en Moskou: Giorgia Meloni op Russische staats-tv e… article.TeaserWrapper_teaser-wrapper__v1JTi > a > picture > img.text-on-image-teaser_customImage__hiouD
/public/incoming/sclaaq-ci-meloni.jpg/alternates/ONE_ONE_...
Logo div.didomi-popup-container > div.didomi-popup-view > div.didomi-popup-notice-logo-container > img.didomi-popup-notice-logo
focus.telegraaf.nl/raw/prod-mh-design-system/7.26.0/tel/logos/logo-main.png

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
●Modern HTTP
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 16 user timings
●Avoid long main-thread tasks 20 long tasks found
●Network Requests
●Network Round Trip Times 20 ms
●Server Backend Latencies 680 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 390 ms
○INP breakdown
○Avoid non-composited animations
○Avoid large layout shifts
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.

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
23:00 a.ListTeaser_list-teaser__link__WmbvV > div.ListTeaser_list-teaser__content__uxl1H > div.ListTeaser_list-teaser__date-time-wrapper__O1anU > time.DateTime_date-time__5Jy0G
23:00 a.ListTeaser_list-teaser__link__WmbvV > div.ListTeaser_list-teaser__content__uxl1H > div.ListTeaser_list-teaser__date-time-wrapper__O1anU > time.DateTime_date-time__5Jy0G
BUITENLAND div.DefaultTeaser_default-teaser__content-wrapper__l1M2T > div.DefaultTeaser_default-teaser__taxonomy__yOuxv > div.TeaserTaxonomy_teaser-taxonomy__X_0Ki > span.TeaserTaxonomy_teaser-taxonomy__label__RSFrP
21:01 div.DefaultTeaser_default-teaser__content-wrapper__l1M2T > div.DefaultTeaser_default-teaser__taxonomy__yOuxv > div.TeaserTaxonomy_teaser-taxonomy__X_0Ki > time.DateTime_date-time__5Jy0G
MEDIA div.DefaultTeaser_default-teaser__content-wrapper__l1M2T > div.DefaultTeaser_default-teaser__taxonomy__yOuxv > div.TeaserTaxonomy_teaser-taxonomy__X_0Ki > span.TeaserTaxonomy_teaser-taxonomy__label__RSFrP
22:00 div.DefaultTeaser_default-teaser__content-wrapper__l1M2T > div.DefaultTeaser_default-teaser__taxonomy__yOuxv > div.TeaserTaxonomy_teaser-taxonomy__X_0Ki > time.DateTime_date-time__5Jy0G

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
PSG boekt belangrijke zege in strijd om Franse landstitel, Bayern München berei… a.ListTeaser_list-teaser__link__WmbvV > div.ListTeaser_list-teaser__content__uxl1H > div > h5.ListTeaser_list-teaser__heading__Dt6Ne
Hoort de Italiaanse Songfestival-zanger niet gewoon in een casino thuis? div.DefaultTeaser_default-teaser__content__CEXA7 > div.TeaserContent_teaser-content__G_aGK > div.TeaserContent_teaser-content__title-wrapper__TvlXs > h5.Heading_heading__E4_Ob
PSG boekt belangrijke zege in strijd om Franse landstitel, Bayern München berei… a.ListTeaser_list-teaser__link__WmbvV > div.ListTeaser_list-teaser__content__uxl1H > div > h5.ListTeaser_list-teaser__heading__Dt6Ne

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._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img

Screen readers cannot translate non-text content. Adding alternate text to `<object>` elements helps screen readers convey meaning to users. Learn more about alt text for `object` elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20
a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 a._root_y7mvt_1 > div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20

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.

○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
●`[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
●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.
●Links have a discernible name
●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
●Touch targets have sufficient size and spacing.
●`[lang]` attributes have a valid value
●Document has a main landmark.
●Deprecated ARIA roles were not used
●All heading elements contain content.
●Uses ARIA roles only on compatible elements
●Elements with visible text labels have matching accessible names.
○`[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">`
○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.
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○Image elements do not have `[alt]` attributes that are redundant text.
○Identical links have the same purpose.
○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
SharedStorage
www.telegraaf.nl/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
www.telegraaf.nl/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
www.telegraaf.nl/cdn-cgi/challenge-platform/scripts/jsd/main.js
Unload event listeners are deprecated and will be removed.
prod-tmg.mhtr.be/public/tr/tracker.min.js line 14, col 188439

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.

Description
A bad HTTP response code (403) was received when fetching the script.
A bad HTTP response code (403) was received when fetching the script.
TypeError: Cannot read properties of null (reading 'previousurl') at glitr_event_ab (<anonymous>:2:138) at <anonymous>:2:416
TypeError: Cannot read properties of null (reading 'previousurl') at glitr_event_ab (<anonymous>:2:138) at <anonymous>:2:416

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLMap URL
www.telegraaf.nl/_next/static/chunks/pages/_app-9f68971ab19cc48d.js
www.telegraaf.nl/_next/static/chunks/2248-e36bd15ff5938687.js
shared.mediahuis.be/extra/ciam/mh/auth0-integration.jsshared.mediahuis.be/extra/ciam/mh/auth0-integration.js.map
prod-tmg.mhtr.be/public/tr/tracker.min.jsprod-tmg.mhtr.be/public/tr/tracker.min.js.map
cdn.kaching.eu.com/latest/tel/dmp.jscdn.kaching.eu.com/latest/tel/dmp.js.map
●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
○Redirects HTTP traffic to HTTPS
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

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
Airship div.airship-prompt-container > div.airship-alert > div.airship-alert-powered > a

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img
div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img div._content_1uixn_10 > div._root_93pne_1 > object._logo_93pne_20 > img

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

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

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