Skip to content
https://telegraph.co.uk

Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

22

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
cdn.viafoura.net/vf-v2.js300.0 s188.7 KiB
/content/dam/travel/2025/12/29/TELEMMGLPICT000454685762_1...43200.0 s294.2 KiB
/71dcbb11123ce6b2e1ce4d47fd79a130aad3fc95/satelliteLib-17...3600.0 s158.9 KiB
/content/dam/global-health/2026/04/14/TELEMMGLPICT0004202...43200.0 s244.7 KiB
/content/dam/PortalPictures/april-2026/478647047_AP_Luis ...43200.0 s238.9 KiB
/content/dam/news/2026/04/14/TELEMMGLPICT000478466726_177...43200.0 s206.5 KiB
/brVdvbqDHWmIn/6s0074rRHavgQ/w/QJarDDYu7fu7/Y3kmDQE/I1hmE...21600.0 s153.1 KiB
/content/dam/news/2026/04/15/TELEMMGLPICT000478574257_177...43200.0 s189.7 KiB
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...261.0 s94.8 KiB
cdn.tinypass.com/api/tinypass.min.js14400.0 s132.2 KiB
/content/dam/PortalPictures/april-2026/l478612547_Getty-I...43200.0 s172.0 KiB
cdn.privacy-mgmt.com/Notice.8f529.js3600.0 s91.2 KiB
/content/dam/briefs/2026/04/15/TELEMMGLPICT000478596240_1...43200.0 s119.5 KiB
/content/dam/news/2026/04/15/TELEMMGLPICT000478617273_177...43200.0 s118.1 KiB
static.telegraph.co.uk/telegraph-advertising/tmg-gpt.min.js300.0 s57.1 KiB
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...151.0 s54.2 KiB
/content/dam/news/2026/04/15/TELEMMGLPICT000478629266_177...43200.0 s98.9 KiB
www.telegraph.co.uk/martech/js/core.min.js186.0 s39.8 KiB
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...300.0 s38.4 KiB
/embeds/00__25-viafoura-conversation-modal/_astro/index.C...3600.0 s42.8 KiB
/content/dam/football/2026/04/15/TELEMMGLPICT000478647152...43200.0 s68.5 KiB
cdn.privacy-mgmt.com/unified/wrapperMessagingWithoutDetection.js3600.0 s42.0 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...300.0 s26.7 KiB
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...300.0 s21.4 KiB
/content/dam/tv/2026/04/13/TELEMMGLPICT000476538785_17761...43200.0 s39.6 KiB
cdn.viafoura.net/entry/index.js600.0 s16.6 KiB
/content/dam/politics/2026/04/15/TELEMMGLPICT000478608055...43200.0 s28.8 KiB
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...130.0 s13.5 KiB
/content/dam/en-us/news/2026/04/15/TELEMMGLPICT0004786452...43200.0 s20.3 KiB
/content/dam/Author photos/James Kirkup Dec 2021.png?impo...0.0 ms10.0 KiB
static.chartbeat.com/js/chartbeat_video.js86400.0 s24.8 KiB
/content/dam/PortalPictures/april-2026/l478609852__.jpg?i...43200.0 s19.3 KiB
/content/dam/en-us/news/2026/04/15/TELEMMGLPICT0004786136...43200.0 s16.8 KiB
static.telegraph.co.uk/telegraph-advertising/tmg-cmp.min.js300.0 s8.7 KiB
/embeds/00__25-viafoura-conversation-modal/_astro/Viafour...3600.0 s9.3 KiB
www.telegraph.co.uk/martech/js/TGT-1205--piano-library/index.js37.0 s6.8 KiB
cf.eip.telegraph.co.uk/podcasts/posters/658300edbbd71a00174fea51.jpeg21600.0 s9.3 KiB
cdn.cxense.com/cx.cce.js3600.0 s6.8 KiB
cdn.privacy-mgmt.com/Notice.30929.css3600.0 s6.7 KiB
static.telegraph.co.uk/telegraph-advertising/tmg-cmpLinks.min.js300.0 s4.9 KiB
cf.eip.telegraph.co.uk/podcasts/posters/6583019ebbd71a00175001c8.jpeg21600.0 s6.7 KiB
/content/dam/Author photos/Annabel_Denham_new.png?impolic...43200.0 s8.4 KiB
static.chartbeat.com/js/chartbeat_mab.js86400.0 s10.1 KiB
/content/dam/utility-bar/Cam-Tim-Utility-Bar.png?impolicy...43200.0 s8.1 KiB
/content/dam/Author photos/032 Guy.png?impolicy=byline-au...43200.0 s7.9 KiB
/content/dam/Author photos/439202599_patrick-kidd.png?imp...43200.0 s7.6 KiB
www.telegraph.co.uk/martech/js/TGT-4026--hash-email-store/index.js284.0 s3.6 KiB
/content/dam/utility-bar/Travel-writing_competition_SQ.jp...43200.0 s5.0 KiB
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...165.0 s1.9 KiB
www.telegraph.co.uk/content/dam/George%20Chesterton.png?impolicy=byline-author43200.0 s3.7 KiB
cdn.privacy-mgmt.com/polyfills.01516.js3600.0 s2.3 KiB
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...300.0 s1.8 KiB
www.telegraph.co.uk/martech/js/TGT-1002--paywall-meters-profile/index.js37.0 s1.7 KiB
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RC10bd4d63b1fe4f2...3600.0 s1.9 KiB
experience.tinypass.com/xbuilder/experience/load?aid=NJu5KnOFpu1800.0 s1.7 KiB
cdn.jsdelivr.net/npm/recombee-js-api-client/dist/recombee-api-client.min.js604800.0 s13.9 KiB
cdn.jsdelivr.net/gh/recombee/js-api-client/dist/recombee-api-client.min.js604800.0 s13.6 KiB
/content/dam/utility-bar/Iran_ Utility Bar.jpg?impolicy=u...43200.0 s2.6 KiB
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RCb9995f44e99c43d...3600.0 s1.5 KiB
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RC00cee9bc4ada429...3600.0 s1.3 KiB
cf.eip.telegraph.co.uk/assets/_css/fontsv08.css3600.0 s1.2 KiB
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RC196522a11d1a4e6...3600.0 s1.2 KiB
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...300.0 s973 B
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RC5e02d88a96114aa...3600.0 s1.1 KiB
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RC0392241e4a1a46c...3600.0 s1.1 KiB
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RCc14ca73cd707423...3600.0 s1.1 KiB
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RC5e2dbb35c68847d...3600.0 s1.1 KiB
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RCeb3f3be5867947f...3600.0 s1.0 KiB
applets.ebxcdn.com/ebx.js7200.0 s1.0 KiB
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RC5b23bcae5fb9431...3600.0 s957 B
/embeds/00__25-viafoura-conversation-modal/_astro/client....3600.0 s878 B
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RCf678a9b3b302440...3600.0 s831 B
secure.s.telegraph.co.uk/tmgads/adtech/2024/prebid/9.0.ab/prebid.js0.0 ms643 B
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RC130d8c2bfb5d4ac...3600.0 s748 B
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RC575f15ce13af493...3600.0 s693 B
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RCd54e9c42e0624ea...3600.0 s521 B
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RC2b5b0c599b1c462...3600.0 s515 B
/Repo/rep.gif?ver=3.3.0&typ=pgv&rnd=mo0nzxbcff28i18l&sid=...0.0 ms412 B
/bb77750356fd/42bfe6bcc850/ceaacb276cdd/RC63265de272154d8...3600.0 s469 B
cf.eip.telegraph.co.uk/assets/_css/doricv01.css86400.0 s643 B
cf.eip.telegraph.co.uk/assets/_css/fontsv09.css86400.0 s617 B
/v3/polyfill.min.js?flags=gated&features=default,fetch,In...604800.0 s407 B
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...300.0 s0 B
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...300.0 s0 B
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...300.0 s0 B
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...300.0 s0 B
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...300.0 s0 B
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...300.0 s0 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.729034] map[node:map[boundingRect:map[bottom:541 height:258 left:0 right:412 top:283 width:412] lhId:page-0-IMG nodeLabel:a > figure.package__figure > div.u-image-placeholder-container > img.responsive path:1,HTML,1,BODY,2,MAIN,1,DIV,1,DIV,3,SECTION,0,DIV,1,DIV,0,A,0,FIGURE,0,DIV,0,IMG selector:a > figure.package__figure > div.u-image-placeholder-container > img.responsive snippet:<img class="responsive package__image-src" src="https://www.telegraph.co.uk/content/dam/politics/2026/04/15/TELEMMGLPICT00…" srcset="/content/dam/politics/2026/04/15/TELEMMGLPICT000478608055_17762637972510.j…" alt="" sizes="(min-width: 768px) 320px, 33.333vw" pinger-seen="true"> type:node] score:0.72871 subItems:map[items:[map[cause:Unsized image element]] type:subitems]] map[node:map[boundingRect:map[bottom:1091 height:258 left:0 right:412 top:834 width:412] lhId:page-3-IMG nodeLabel:a > figure.package__figure > div.u-image-placeholder-container > img.responsive path:1,HTML,1,BODY,2,MAIN,1,DIV,1,DIV,4,SECTION,0,DIV,1,DIV,0,A,0,FIGURE,0,DIV,0,IMG selector:a > figure.package__figure > div.u-image-placeholder-container > img.responsive snippet:<img class="responsive package__image-src" src="https://www.telegraph.co.uk/content/dam/PortalPictures/april-2026/l4786125…" srcset="/content/dam/PortalPictures/april-2026/l478612547_Getty-Images-Europe_Isra…" alt="" sizes="(min-width: 768px) 640px, 100vw" pinger-seen="true"> type:node] score:0.000324 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://cf.eip.telegraph.co.uk/assets/_fonts/Austin%20News%20Deck%20Web-Semibold.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:183 height:23 left:348 right:388 top:161 width:40] lhId:page-0-P nodeLabel:27:07 path:1,HTML,1,BODY,0,MAIN,0,SECTION,0,DIV,2,DIV,0,DIV,1,DIV,0,DIV,1,DIV,2,P selector:div.media__inner > div.audioPlayer > div.audioPlayer__timeline > p.audioPlayer__timeDisplay snippet:<p class="audioPlayer__timeDisplay" data-js-totaltime=""> type:node] score:0 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://www.telegraph.co.uk/etc.clientlibs/settings/wcm/designs/telegraph/core/clientlibs/ui/dist/static/resources/fonts/doric-news-uprights-vf-basic-web.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:213 height:23 left:344 right:388 top:191 width:44] lhId:page-0-P nodeLabel:40:26 path:1,HTML,1,BODY,0,MAIN,0,SECTION,0,DIV,2,DIV,0,DIV,1,DIV,0,DIV,1,DIV,2,P selector:div.media__inner > div.audioPlayer > div.audioPlayer__timeline > p.audioPlayer__timeDisplay snippet:<p class="audioPlayer__timeDisplay" data-js-totaltime=""> type:node] score:0 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://www.telegraph.co.uk/etc.clientlibs/settings/wcm/designs/telegraph/core/clientlibs/ui/dist/static/resources/fonts/doric-news-uprights-vf-basic-web.woff2]]] type:subitems]]]

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
cf.eip.telegraph.co.uk/assets/_fonts/Austin%20News%20Deck%20Web-Semibold.woff245 ms
cf.eip.telegraph.co.uk/assets/_fonts/Austin%20News%20Text%20Web-Roman.woff230 ms

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: a > figure.package__figure > div.u-image-placeholder-container > img.responsive
path: 1,HTML,1,BODY,2,MAIN,1,DIV,1,DIV,3,SECTION,0,DIV,1,DIV,0,A,0,FIGURE,0,DIV,0,IMG
selector: a > figure.package__figure > div.u-image-placeholder-container > img.responsive
snippet: <img class="responsive package__image-src" src="https://www.telegraph.co.uk/content/dam/politics/2026/04/15/TELEMMGLPICT00…" srcset="/content/dam/politics/2026/04/15/TELEMMGLPICT000478608055_17762637972510.j…" alt="" sizes="(min-width: 768px) 320px, 33.333vw" pinger-seen="true">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
static.telegraph.co.uk/telegraph-advertising/tmg-cmp.min.js8.7 KiB801 ms
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...94.8 KiB902 ms

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: 800 ms
URLTime Spent
telegraph.co.uk/800 ms
www.telegraph.co.uk/0.0 ms

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 959 ms
URLTime Spent
www.telegraph.co.uk/1.1 s

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
a > figure.package__figure > div.u-image-placeholder-container > img.responsive a > figure.package__figure > div.u-image-placeholder-container > img.responsive
0.729
a > figure.package__figure > div.u-image-placeholder-container > img.responsive a > figure.package__figure > div.u-image-placeholder-container > img.responsive
0.000
27:07 div.media__inner > div.audioPlayer > div.audioPlayer__timeline > p.audioPlayer__timeDisplay
0.000
40:26 div.media__inner > div.audioPlayer > div.audioPlayer__timeline > p.audioPlayer__timeDisplay
0.000

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: 450 ms 90.7 KiB
URLTransfer SizeEst Savings
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...94.5 KiB90.7 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
Unattributable1.4 s269 ms0.0 ms
www.telegraph.co.uk/983 ms78 ms9.6 ms
/71dcbb11123ce6b2e1ce4d47fd79a130aad3fc95/satelliteLib-17...801 ms613 ms97 ms
/brVdvbqDHWmIn/6s0074rRHavgQ/w/QJarDDYu7fu7/Y3kmDQE/I1hmE...692 ms639 ms41 ms
/visuals-cms/particles/animated-carousel/public-assets/js...341 ms292 ms42 ms
cdn.tinypass.com/api/tinypass.min.js271 ms225 ms31 ms
cdn.viafoura.net/vf-v2.js264 ms204 ms49 ms
www.googletagmanager.com/gtag/js?id=AW-362151000&l=gDataLayer&cx=c&gtm=4e64e1257 ms201 ms54 ms
cf.eip.telegraph.co.uk/visuals-cms/particles/helpers.js253 ms187 ms51 ms
www.googletagmanager.com/gtag/js?id=AW-11084402548&l=gDataLayer245 ms202 ms38 ms
cf.eip.telegraph.co.uk/particle-embed/js/particle.js241 ms216 ms15 ms
www.googletagmanager.com/gtag/js?id=AW-808307600&l=gDataLayer&cx=c&gtm=4e64e1225 ms186 ms37 ms
cdn.privacy-mgmt.com/unified/wrapperMessagingWithoutDetection.js191 ms152 ms17 ms
www.googletagmanager.com/gtag/js?id=DC-10936650&l=gDataLayer&cx=c&gtm=4e64e1161 ms134 ms25 ms
www.telegraph.co.uk/martech/js/core.min.js160 ms136 ms12 ms
www.googletagmanager.com/gtag/js?id=DC-11213712&l=gDataLayer&cx=c&gtm=4e64e1144 ms117 ms27 ms
cdn.privacy-mgmt.com/unified/4.40.1/ccpa-gpp.d3f006f99fb3b63e8837.bundle.js116 ms79 ms37 ms
static.chartbeat.com/js/chartbeat_video.js116 ms106 ms5.4 ms
static.telegraph.co.uk/telegraph-advertising/tmg-cmp.min.js114 ms98 ms2.2 ms
cdn.cxense.com/cx.js79 ms60 ms8.9 ms
static.chartbeat.com/js/chartbeat_mab.js74 ms52 ms2.1 ms
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...69 ms52 ms13 ms
static.telegraph.co.uk/telegraph-advertising/tmg-gpt.min.js69 ms38 ms26 ms
/7a8c956f-996d-4cc3-a2a6-588c841638d5.home-page.html?dire...66 ms0.2 ms0.3 ms
cdn.privacy-mgmt.com/unified/4.40.1/gdpr-tcf.27718c8cb9d29947d2c1.bundle.js53 ms39 ms14 ms
cdn.viafoura.net/chunks/141.e7f9da4928a448cc2565.js52 ms48 ms1.5 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 Evaluation4.7 s
Other1.3 s
Script Parsing & Compilation699 ms
Style & Layout629 ms
Parse HTML & CSS274 ms
Rendering161 ms
Garbage Collection103 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 WebSocket cannot enter back/forward cache.Pending browser support

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: 0.0 ms 879.2 KiB
URLTransfer SizeEst Savings
cdn.viafoura.net/vf-v2.js187.7 KiB125.1 KiB
cdn.tinypass.com/api/tinypass.min.js131.7 KiB82.5 KiB
www.googletagmanager.com/gtag/js?id=AW-362151000&l=gDataLayer&cx=c&gtm=4e64e1133.9 KiB63.3 KiB
www.googletagmanager.com/gtag/js?id=AW-808307600&l=gDataLayer&cx=c&gtm=4e64e1145.5 KiB62.7 KiB
www.googletagmanager.com/gtag/js?id=DC-10936650&l=gDataLayer&cx=c&gtm=4e64e1129.2 KiB59.3 KiB
www.googletagmanager.com/gtag/js?id=DC-11213712&l=gDataLayer&cx=c&gtm=4e64e1129.2 KiB59.2 KiB
www.googletagmanager.com/gtag/js?id=AW-11084402548&l=gDataLayer136.4 KiB59.1 KiB
/visuals-cms/particles/animated-carousel/public-assets/js...137.0 KiB58.7 KiB
/etc.clientlibs/settings/wcm/designs/telegraph/core/clien...53.8 KiB44.3 KiB
static.telegraph.co.uk/telegraph-advertising/tmg-gpt.min.js56.9 KiB40.5 KiB
/71dcbb11123ce6b2e1ce4d47fd79a130aad3fc95/satelliteLib-17...158.6 KiB29.7 KiB
/brVdvbqDHWmIn/6s0074rRHavgQ/w/QJarDDYu7fu7/Y3kmDQE/I1hmE...152.8 KiB28.4 KiB
cdn.cxense.com/cx.js37.5 KiB21.7 KiB
/embeds/00__25-viafoura-conversation-modal/_astro/index.C...42.8 KiB21.5 KiB
cdn.privacy-mgmt.com/unified/4.40.1/ccpa-gpp.d3f006f99fb3b63e8837.bundle.js41.3 KiB21.1 KiB
cf.eip.telegraph.co.uk/visuals-cms/particles/helpers.js37.1 KiB20.4 KiB
cf.eip.telegraph.co.uk/visuals-cms/particles/helpers.js37.1 KiB20.4 KiB
cf.eip.telegraph.co.uk/visuals-cms/particles/helpers.js37.1 KiB20.4 KiB
cf.eip.telegraph.co.uk/visuals-cms/particles/helpers.js37.1 KiB20.4 KiB
cf.eip.telegraph.co.uk/visuals-cms/particles/helpers.js37.1 KiB20.4 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
/uploads/file-uploader/fcc2b5af-704e-458d-b0f0-bb8791d1c3...2.1 MiB
/uploads/file-uploader/ffd82fa5-0f20-4a7f-af89-3a45e46717...1.8 MiB
/responsive-image/content/15eae00a-ee2d-45bb-874d-262345f...340.0 KiB
/content/dam/travel/2025/12/29/TELEMMGLPICT000454685762_1...294.2 KiB
/content/dam/global-health/2026/04/14/TELEMMGLPICT0004202...244.7 KiB
/content/dam/PortalPictures/april-2026/478647047_AP_Luis ...238.9 KiB
/content/dam/news/2026/04/14/TELEMMGLPICT000478466726_177...206.5 KiB
/content/dam/news/2026/04/15/TELEMMGLPICT000478574257_177...189.7 KiB
cdn.viafoura.net/vf-v2.js188.7 KiB
/content/dam/PortalPictures/april-2026/l478612547_Getty-I...172.0 KiB

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

●Optimize DOM size
●Forced reflow
●Improve image delivery
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 36 user timings
●Avoid long main-thread tasks 20 long tasks found
●Image elements have explicit `width` and `height`
●Network Requests
●Network Round Trip Times 100 ms
●Server Backend Latencies 120 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
○INP breakdown
○Avoid non-composited animations
93

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

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.site-header__container > div.site-header__masthead > div.site-header__logo > a.e-site-logo div.site-header__container > div.site-header__masthead > div.site-header__logo > a.e-site-logo
section.package > div.package__grid > div.grid-col > a section.package > div.package__grid > div.grid-col > a
section.package > div.package__grid > div.grid-col > a section.package > div.package__grid > div.grid-col > a
section.package > div.package__grid > div.grid-col > a section.package > div.package__grid > div.grid-col > 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
David Blair span.e-byline > span > span.e-byline__details-multiAuthors > a.e-byline__link
Shevaun Haviland span.e-byline > span > span.e-byline__details-multiAuthors > a.e-byline__link
Tom Stevenson span.e-byline > span > span.e-byline__details-multiAuthors > a.e-byline__link
Gary Rycroft span.e-byline > span > span.e-byline__details-multiAuthors > a.e-byline__link

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●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.
●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
●`<frame>` or `<iframe>` elements have a title
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements 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
○Buttons have an accessible name
○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
○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.
○No element has a `[tabindex]` value greater than 0
○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>`.
○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.
100

Best Practices

General

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
/visuals-cms/particles/animated-carousel/public-assets/js...
cdn.viafoura.net/vf-v2.jscdn.viafoura.net/vf-v2.js.map
cdn.viafoura.net/chunks/255.0a14e6cf041b1c00f4ae.jscdn.viafoura.net/chunks/255.0a14e6cf041b1c00f4ae.js.map
cdn.cxense.com/cx.cce.jscdn.cxense.com/cx.cce.js.map
cdn.viafoura.net/entry/index.jscdn.viafoura.net/entry/index.js.map
cdn.jsdelivr.net/npm/recombee-js-api-client/dist/recombee-api-client.min.jscdn.jsdelivr.net/npm/recombee-js-api-client/dist/recombee-api-client.min.js.map
cdn.jsdelivr.net/gh/recombee/js-api-client/dist/recombee-api-client.min.jscdn.jsdelivr.net/gh/recombee/js-api-client/dist/recombee-api-client.min.js.map
●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 browser errors logged to the console
●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
83

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.telegraph.co.uk/contact-us/editorial-complaints/here
www.telegraph.co.uk/news/0/telegraph-corrections-and-clarifications/here

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
li#travel > ul.all-sections__secondary-list > li.all-sections__secondary-item > a.all-sections__link
li#recommended > ul.all-sections__secondary-list > li.all-sections__secondary-item > a.all-sections__link
li#recommended > ul.all-sections__secondary-list > li.all-sections__secondary-item > a.all-sections__link
li#recommended > ul.all-sections__secondary-list > li.all-sections__secondary-item > a.all-sections__link
li#lifestyle > ul.all-sections__secondary-list > li.all-sections__secondary-item > a.all-sections__link
li#culture > ul.all-sections__secondary-list > li.all-sections__secondary-item > a.all-sections__link

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
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`
○robots.txt is valid

Send Feedback