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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.

10

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
consent.economist.com/Notice.8f529.js3600.0 s91.2 KiB
wall-ui-cdn.p.aws.economist.com/latest/wall-ui.js0.0 ms68.7 KiB
aswpsdkeu.com/notify/v2/ua-sdk.min.js300.0 s62.6 KiB
cdn.eu.amplitude.com/script/f3474234bacde7a4dcbceaf2e21dfbad.experiment.js60.0 s42.9 KiB
consent.economist.com/unified/wrapperMessagingWithoutDetection.js3600.0 s40.4 KiB
tags.tiqcdn.com/utag/teg/core/prod/utag.js300.0 s32.5 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
experiments.parsely.com/vip-experiments.js?apiKey=economist.com30.0 s8.9 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/625261456364/...14400.0 s12.4 KiB
tags.tiqcdn.com/utag/teg/core/prod/utag.425.js?utv=ut4.51.202603241028300.0 s7.2 KiB
tags.tiqcdn.com/utag/teg/core/prod/utag.280.js?utv=ut4.51.202603301059300.0 s6.5 KiB
consent.economist.com/Notice.30929.css3600.0 s6.7 KiB
tags.tiqcdn.com/utag/teg/core/prod/utag.348.js?utv=ut4.51.202603301059300.0 s5.0 KiB
cmp-cdn.p.aws.economist.com/latest/cmp.min.js0.0 ms4.7 KiB
tags.tiqcdn.com/utag/teg/core/prod/utag.393.js?utv=ut4.51.202411261053300.0 s4.5 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
cmp-cdn.p.aws.economist.com/latest/configs/economist.config.js0.0 ms1.9 KiB
consent.economist.com/polyfills.01516.js3600.0 s2.3 KiB
/assets/latest/common/static/images/image/image-placehold...0.0 ms555 B
tags.tiqcdn.com/utag/tiqapp/utag.v.js?a=teg/core/202603301059&cb=1775592251414300.0 s432 B
/px/?rand=1775592251243&plid=1354c8b6-c077-42de-9fdf-d578...0.0 ms229 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:0.454341] map[node:map[boundingRect:map[bottom:3082 height:1767 left:0 right:412 top:1314 width:412] lhId:page-18-SECTION nodeLabel:Finance & economics The war in the Gulf could cause a global food shock Soari… path:1,HTML,1,BODY,0,DIV,0,DIV,0,DIV,2,DIV,0,MAIN,0,DIV,0,DIV,3,SECTION selector:main#content > div.css-k6pylv > div.css-6nowcw > section#new-relic-top-stories snippet:<section id="new-relic-top-stories"> type:node] score:0.224505] map[node:map[boundingRect:map[bottom:572 height:95 left:20 right:392 top:477 width:372] lhId:page-1-P nodeLabel:You can update your preferences or withdraw your consent at any time by visitin… path:1,HTML,1,BODY,0,DIV,1,DIV,2,DIV,0,DIV,3,P selector:div#notice > div.message-component > div.message-component > p.focusable snippet:<p tabindex="0" class="focusable message-component text no-children teg-body" style="padding: 0px; margin: 0px; font-size: 16px; font-weight: 400;"> type:node] score:0.084485 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://cdn.design-system.economist.com/assets/7.2.1/common/static/fonts/economist-sans-roman.woff2]] map[cause:Web font extra:map[type:url value:https://cdn.design-system.economist.com/assets/7.2.1/common/static/fonts/economist-sans-osf-roman.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:3082 height:1767 left:0 right:412 top:1314 width:412] lhId:page-18-SECTION nodeLabel:Finance & economics The war in the Gulf could cause a global food shock Soari… path:1,HTML,1,BODY,0,DIV,0,DIV,0,DIV,2,DIV,0,MAIN,0,DIV,0,DIV,3,SECTION selector:main#content > div.css-k6pylv > div.css-6nowcw > section#new-relic-top-stories snippet:<section id="new-relic-top-stories"> type:node] score:0.058731 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1558 height:218 left:12 right:400 top:1339 width:388] lhId:page-3-IMG nodeLabel:Aerial shot of workers at rice mills in Ashuganj, Bangladesh. path:1,HTML,1,BODY,0,DIV,0,DIV,0,DIV,2,DIV,0,MAIN,0,DIV,0,DIV,3,SECTION,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,IMG selector:div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img snippet:<img alt="Aerial shot of workers at rice mills in Ashuganj, Bangladesh." width="1280" height="720" decoding="async" data-nimg="1" sizes="(min-width: 1432px) 716px, (min-width: 800px) 50vw, 100vw" srcset="https://www.economist.com/cdn-cgi/image/width=256,quality=80,format=auto/c…" src="https://www.economist.com/cdn-cgi/image/width=834,quality=80,format=auto/c…" style="color: transparent;"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:15919 height:15765 left:0 right:412 top:154 width:412] lhId:page-16-DIV nodeLabel:In brief The world in brief | 27 min ago Catch up: Trump’s deadline nears; Am… path:1,HTML,1,BODY,0,DIV,0,DIV,0,DIV,2,DIV selector:div#__next > div > div#global-layout-anon > div snippet:<div> type:node] score:0.050073 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:230 height:72 left:12 right:140 top:158 width:128] lhId:page-10-IMG nodeLabel:Smoke rises following strikes on Tehran, Iran. path:1,HTML,1,BODY,0,DIV,0,DIV,0,DIV,2,DIV,0,MAIN,0,DIV,0,DIV,0,SECTION,0,DIV,1,DIV,0,DIV,0,DIV,0,FIGURE,0,IMG selector:div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img snippet:<img alt="Smoke rises following strikes on Tehran, Iran." loading="eager" width="1280" height="720" decoding="async" data-nimg="1" sizes="352px" srcset="https://www.economist.com/cdn-cgi/image/width=16,quality=80,format=auto/co…" src="https://www.economist.com/cdn-cgi/image/width=834,quality=80,format=auto/c…" style="color: transparent;"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:823 height:823 left:0 right:412 top:0 width:412] lhId:page-0-DIV nodeLabel:We value your privacy We use cookies and similar technologies. Some collect yo… path:1,HTML,1,BODY,0,DIV,1,DIV selector:body > div.message-container > div#notice snippet:<div id="notice" class="message type-modal" style="padding: 0px; border-width: 0px; border-radius: 0px; border-style: solid;"> type:node] score:0.036547]]

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:30.112 source:map[column:89377 line:1 type:source-location url:https://www.economist.com/engassets/_next/static/chunks/258-1bfda41b803462e6.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:107.187 source:map[type:text value:[unattributed]]] map[reflowTime:29.548 source:map[column:89059 line:0 type:source-location url:https://www.economist.com/engassets/_next/static/chunks/258-1bfda41b803462e6.js urlProvider:network]] map[reflowTime:0.564 source:map[column:89194 line:0 type:source-location url:https://www.economist.com/engassets/_next/static/chunks/258-1bfda41b803462e6.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
Fans react to the Kansas City Chiefs scoring a touchdown against the San Franci… div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...102.6 KiB101.0 KiB
Demis Hassabis knows AI’s risks. He’s building it anyway div._outerWrapper_16m9y_9 > section._container_16m9y_15 > div._videoWrapper_16m9y_86 > img._eventImage_16m9y_100
/wp-content/uploads/2026/04/20260411_BLP501-1024x579.jpg101.2 KiB87.3 KiB
A photo showing Indian Prime Minister Narendra Modi practicing yoga as part of … div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...66.4 KiB63.3 KiB
Aerial shot of workers at rice mills in Ashuganj, Bangladesh. div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...76.5 KiB62.7 KiB
Cheng Li-wun, the chairwoman of Taiwan's largest opposition party, the Kuominta… div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...53.2 KiB51.9 KiB
Danish Military Activity In Greenland div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...53.0 KiB51.7 KiB
Significant sections of the B1 Bridge are seen destroyed after an airstrike att… div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...50.7 KiB39.7 KiB
Downward trending arrow trending through a pile of money. div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...39.0 KiB38.0 KiB
President Donald Trump div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...38.1 KiB36.3 KiB
Iranian missiles are seen at an underground of the new "missile cite" of Iran's… div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...37.0 KiB35.3 KiB
Smoke rises following strikes on Tehran, Iran. div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...23.7 KiB23.2 KiB
Chief of Staff of the Defence Forces, Lieutenant General Sean Clancy, speaks to… div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...22.4 KiB21.9 KiB
An illustration of bond on top of a paper bin. The bond is yellow and in the sh… div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...26.7 KiB20.9 KiB
A framed photo of Zac Brettler. div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...16.3 KiB15.6 KiB
Illustration of a man looking up at a woman stood on an office chair div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...15.8 KiB15.4 KiB
Illustration of an oil drum with a straw, a paper umbrella, a flamingo stirrer … div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
/cdn-cgi/image/width=834,quality=80,format=auto/content-a...15.2 KiB14.9 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-3-IMG
nodeLabel: Aerial shot of workers at rice mills in Ashuganj, Bangladesh.
path: 1,HTML,1,BODY,0,DIV,0,DIV,0,DIV,2,DIV,0,MAIN,0,DIV,0,DIV,3,SECTION,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,IMG
selector: div.teaser_mb-teaser__k_8Tk > div.media_mb-teaser__media__JtjA2 > figure.css-3mn275 > img
snippet: <img alt="Aerial shot of workers at rice mills in Ashuganj, Bangladesh." width="1280" height="720" decoding="async" data-nimg="1" sizes="(min-width: 1432px) 716px, (min-width: 800px) 50vw, 100vw" srcset="https://www.economist.com/cdn-cgi/image/width=256,quality=80,format=auto/c…" src="https://www.economist.com/cdn-cgi/image/width=834,quality=80,format=auto/c…" style="color: transparent;">

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

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
Finance & economics The war in the Gulf could cause a global food shock Soari… main#content > div.css-k6pylv > div.css-6nowcw > section#new-relic-top-stories
0.225
You can update your preferences or withdraw your consent at any time by visitin… div#notice > div.message-component > div.message-component > p.focusable
0.084
Finance & economics The war in the Gulf could cause a global food shock Soari… main#content > div.css-k6pylv > div.css-6nowcw > section#new-relic-top-stories
0.059
In brief The world in brief | 27 min ago Catch up: Trump’s deadline nears; Am… div#__next > div > div#global-layout-anon > div
0.050
We value your privacy We use cookies and similar technologies. Some collect yo… body > div.message-container > div#notice
0.037

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: 3.3 s 700.9 KiB
URLTransfer SizeEst Savings
www.economist.com/engassets/_next/static/chunks/bf32f307.5596899166592f66.js148.2 KiB138.8 KiB
www.economist.com/engassets/_next/static/chunks/58474bfb-8fb86143ed249a61.js98.8 KiB69.9 KiB
www.economist.com/engassets/_next/static/chunks/790-c9029d45cd705925.js152.1 KiB66.2 KiB
www.googletagmanager.com/gtag/js?id=G-WL00EXBGPS&cx=c&gtm=4e6460163.1 KiB65.6 KiB
consent.economist.com/Notice.8f529.js90.9 KiB61.4 KiB
www.googletagmanager.com/gtag/js?id=G-CWJ8XWVBYS165.5 KiB60.9 KiB
www.economist.com/engassets/_next/static/chunks/pages/_app-cdfc9ac951a8fa99.js89.9 KiB60.7 KiB
www.economist.com/engassets/_next/static/chunks/7ef05774.6f38de9cd30a12ca.js99.4 KiB58.0 KiB
aswpsdkeu.com/notify/v2/ua-sdk.min.js62.1 KiB44.4 KiB
www.economist.com/engassets/_next/static/chunks/3544.30aab8d29676792e.js47.1 KiB33.0 KiB
consent.economist.com/unified/4.40.1/usnat-uspapi.090eccada574d39af6f8.bundle.js42.0 KiB21.3 KiB
www.economist.com/engassets/_next/static/chunks/main-ad5273fb316594f8.js38.4 KiB20.6 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.economist.com/1.9 s406 ms22 ms
www.economist.com/engassets/_next/static/chunks/framework-97862ef36bc4065f.js1.3 s856 ms13 ms
Unattributable895 ms51 ms0.0 ms
consent.economist.com/unified/wrapperMessagingWithoutDetection.js572 ms432 ms16 ms
consent.economist.com/Notice.8f529.js518 ms402 ms31 ms
www.googletagmanager.com/gtag/js?id=G-CWJ8XWVBYS347 ms294 ms51 ms
www.googletagmanager.com/gtag/js?id=G-WL00EXBGPS&cx=c&gtm=4e6460282 ms237 ms41 ms
www.economist.com/engassets/_next/static/chunks/pages/index-4eacb687c721052b.js278 ms274 ms3.5 ms
www.economist.com/engassets/_next/static/chunks/3544.30aab8d29676792e.js261 ms247 ms12 ms
js-agent.newrelic.com/nr-spa-1.312.1.min.js246 ms188 ms18 ms
tags.tiqcdn.com/utag/teg/core/prod/utag.js208 ms179 ms23 ms
www.economist.com/cdn-cgi/challenge-platform/scripts/jsd/main.js179 ms171 ms2.1 ms
www.economist.com/engassets/_next/static/chunks/790-c9029d45cd705925.js129 ms36 ms56 ms
aswpsdkeu.com/notify/v2/ua-sdk.min.js115 ms73 ms32 ms
www.economist.com/engassets/_next/static/chunks/pages/_app-cdfc9ac951a8fa99.js113 ms86 ms26 ms
www.economist.com/engassets/_next/static/chunks/main-ad5273fb316594f8.js102 ms89 ms13 ms
cdn.eu.amplitude.com/script/f3474234bacde7a4dcbceaf2e21dfbad.experiment.js102 ms82 ms18 ms
consent.economist.com/unified/4.40.1/usnat-uspapi.090eccada574d39af6f8.bundle.js99 ms72 ms27 ms
www.google-analytics.com/analytics.js96 ms77 ms8.3 ms
cmp-cdn.p.aws.economist.com/latest/cmp.min.js88 ms84 ms2.0 ms
cdn.parsely.com/keys/economist.com/p.js80 ms70 ms5.0 ms
www.economist.com/engassets/_next/static/chunks/bf32f307.5596899166592f66.js80 ms2.7 ms77 ms
tags.tiqcdn.com/utag/teg/core/prod/utag.280.js?utv=ut4.51.20260330105970 ms62 ms6.2 ms
wall-ui-cdn.p.aws.economist.com/latest/wall-ui.js58 ms25 ms32 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
Style & Layout1.4 s
Other1.2 s
Script Parsing & Compilation693 ms
Rendering243 ms
Parse HTML & CSS209 ms
Garbage Collection125 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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
www.googletagmanager.com/gtag/js?id=G-CWJ8XWVBYS165.8 KiB
www.googletagmanager.com/gtag/js?id=G-WL00EXBGPS&cx=c&gtm=4e6460163.1 KiB
www.economist.com/engassets/_next/static/chunks/790-c9029d45cd705925.js156.2 KiB
www.economist.com/engassets/_next/static/chunks/bf32f307.5596899166592f66.js148.8 KiB
/foundations/latest/fonts/economist-serif-display-roman.w...136.8 KiB
marber-cdn.economist.com/foundations/latest/fonts/economist-serif-italic.woff2125.6 KiB
marber-cdn.economist.com/foundations/latest/fonts/economist-sans-roman.woff2109.1 KiB
marber-cdn.economist.com/foundations/latest/fonts/economist-sans-italic.woff2107.7 KiB
/assets/7.2.1/common/static/fonts/economist-sans-osf-roma...107.0 KiB
/assets/7.2.1/common/static/fonts/economist-sans-roman.woff2106.8 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
Anthropic div._outerWrapper_16m9y_9 > div.insider-sponsorship > a._logo_1ka0o_13 > img
/wp-content/uploads/2026/03/sponsorship-insider-anthropic...

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

●Document request latency
●Optimize DOM size
●Font display
●LCP breakdown
●Modern HTTP
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Reduce unused CSS
●User Timing marks and measures 14 user timings
●Avoid long main-thread tasks 20 long tasks found
●Network Requests
●Network Round Trip Times 40 ms
●Server Backend Latencies 70 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Initial server response time was short Root document took 230 ms
○INP breakdown
○Avoid non-composited animations
92

Accessibility

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

Names and labels

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.container_mb-container__Fo2_b > div.flex_mb-flex__6laMs > div.flex_mb-flex__6laMs > button.button_mb-masthead__button__4sHC_ div.container_mb-container__Fo2_b > div.flex_mb-flex__6laMs > div.flex_mb-flex__6laMs > button.button_mb-masthead__button__4sHC_
div.container_mb-container__Fo2_b > div.flex_mb-flex__6laMs > div.flex_mb-flex__6laMs > button.button_mb-masthead__button__4sHC_ div.container_mb-container__Fo2_b > div.flex_mb-flex__6laMs > div.flex_mb-flex__6laMs > button.button_mb-masthead__button__4sHC_

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.

Navigation

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Subscribe div.expandable-banner > div.expandable-banner__content > div.expandable-banner__content-link > a.expandable-banner-call-to-action
Expand dual-offer-banner > div > div.expandable-banner > button.ds-control-expand

These are opportunities to improve keyboard navigation in your application.

○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.
●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
●Touch targets have sufficient size and spacing.
●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.
○`[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
○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.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Uses ARIA roles only on compatible elements
○Image elements do not have `[alt]` attributes that are redundant text.
○Elements with visible text labels have matching accessible names.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
SharedStorage
www.economist.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
www.economist.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
www.economist.com/cdn-cgi/challenge-platform/scripts/jsd/main.js

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
A bad HTTP response code (403) was received when fetching the script.
www.economist.com/site.webmanifest.json
Failed to load resource: the server responded with a status of 403 ()
www.economist.com/site.webmanifest.json
Failed to load resource: the server responded with a status of 403 ()
www.economist.com/
Manifest fetch from https://www.economist.com/site.webmanifest.json failed, code 403
www.economist.com/
Manifest fetch from https://www.economist.com/site.webmanifest.json failed, code 403

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.

URL
www.economist.com/engassets/_next/static/chunks/bf32f307.5596899166592f66.js
●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
100

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.

○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`
●Document has a valid `rel=canonical`
○robots.txt is valid

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