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United Stated United Stated · Santa Clara Completed: Apr 4, 2026 15:52 UTC

Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
C73

Site Health

Score: 73 / 100

Based on 8 categories, 0 sections

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

Top Priorities (5)

1

Content-Security-Policy header is missing

Security › Security Headers
2

No Content-Security-Policy header found

Security › Content Security Policy
3

1 button(s) with no accessible text

Accessibility › Link & Button Quality
4

66 image(s) missing alt attribute

Accessibility › Alt Text Quality
5

66 image-in-link without alt text

Accessibility › Alt Text Quality
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<a href="https://beavercheck.com/results/ff7fa760-2863-4ad2-8e91-40dbfa8e2d0b"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fwww.bbc.com" alt="BeaverCheck Score"></a>
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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

41
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.20 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

7.25 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

3.19 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.011

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

4.72 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

21.00 s

Detailed Report

Audit breakdown by category with detailed findings.

41

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

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

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

RequestCache TTLTransfer Size
ichef.bbci.co.uk/images/ic/raw/p0m5nxgs.jpg86400.0 s297.2 KiB
cdn.optimizely.com/public/4621041136/s/bbcx_prod.js120.0 s97.1 KiB
cdn.tinypass.com/api/tinypass.min.js14400.0 s131.7 KiB
buy-eu.piano.io/widget/dist/checkout/css/checkout.bundle.1.1.css14400.0 s101.7 KiB
emp.bbci.co.uk/emp/bump-4/bump-4.js300.0 s40.3 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
uk-script.dotmetrics.net/Scripts/script.js?v=3620.0 ms28.5 KiB
ichef.bbci.co.uk/images/ic/800x450/p0nbh3q0.jpg.webp86400.0 s64.5 KiB
ichef.bbci.co.uk/images/ic/800x450/p0m1wsx5.jpg.webp86400.0 s57.8 KiB
ichef.bbci.co.uk/images/ic/800x450/p0n52myh.jpg.webp86400.0 s54.8 KiB
gn-web-assets.api.bbc.com/ngas/latest/dotcom-bootstrap.js360.0 s22.3 KiB
ichef.bbci.co.uk/images/ic/800x450/p0n9yqxb.jpg.webp86400.0 s50.3 KiB
ichef.bbci.co.uk/images/ic/800x450/p0nb1mbl.jpg.webp86400.0 s43.4 KiB
ichef.bbci.co.uk/images/ic/320xn/p0m2bkzn.jpg.webp86400.0 s38.7 KiB
/_sam/H4sIAAAAAAAA_62YS4_bOAyA_1BnjGYve20zu9MCWyBo2l4XtEQ...602385.0 s126.8 KiB
ichef.bbci.co.uk/images/ic/320xn/p0n3cq6z.jpg.webp86400.0 s31.7 KiB
ichef.bbci.co.uk/images/ic/800x450/p0nb6m23.jpg.webp86400.0 s31.4 KiB
ichef.bbci.co.uk/images/ic/320xn/p0m2bgmn.jpg.webp86400.0 s26.6 KiB
ichef.bbci.co.uk/images/ic/800x450/p0nb317m.jpg.webp86400.0 s25.8 KiB
buy-eu.piano.io/widget/dist/checkout/css/img/Loader.gif14400.0 s15.0 KiB
ichef.bbci.co.uk/images/ic/800x450/p0nbbw83.jpg.webp86400.0 s24.9 KiB
ichef.bbci.co.uk/images/ic/800x450/p0mq3vt9.jpg.webp86400.0 s22.7 KiB
ichef.bbci.co.uk/images/ic/800x450/p0n1lmv8.jpg.webp86400.0 s21.2 KiB
ichef.bbci.co.uk/images/ic/320xn/p0n51w81.jpg.webp86400.0 s19.4 KiB
ichef.bbci.co.uk/images/ic/320xn/p0m2bpkc.jpg.webp86400.0 s19.3 KiB
ichef.bbci.co.uk/images/ic/800x450/p0n9s4tg.jpg.webp86400.0 s18.9 KiB
ichef.bbci.co.uk/images/ic/320xn/p0n3ckc6.jpg.webp86400.0 s18.3 KiB
static.chartbeat.com/js/chartbeat.js86400.0 s15.9 KiB
ichef.bbci.co.uk/images/ic/320xn/p0m2bqvt.jpg.webp86400.0 s15.7 KiB
ichef.bbci.co.uk/images/ic/320xn/p0n7vy55.jpg.webp86400.0 s15.4 KiB
cdn.cxense.com/cx.cce.js3600.0 s6.8 KiB
/ng/common/i18n/platform-translation-map_en_US.js?version...86400.0 s13.5 KiB
/checkout/general/loadTranslationMap?aid=7I7hmRshpe&versi...86400.0 s10.4 KiB
/hit.gif?id=13934&url=https%3A%2F%2Fwww.bbc.com%2F&dom=ww...86400.0 s1.2 KiB
/Repo/rep.gif?ver=3.3.0&typ=pgv&rnd=mnkifutxnrmp6ojl&sid=...0.0 ms412 B
buy-eu.piano.io/ng/common/pn-spinner/pn-spinner.css14400.0 s490 B

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.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:141.034 source:map[type:text value:[unattributed]]]]

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

lhId: page-0-IMG
nodeLabel: F-15 flying through blue skies, towards the top right of the picture
path: 1,HTML,1,BODY,0,DIV,0,DIV,10,MAIN,0,ARTICLE,1,SECTION,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,IMG
selector: div.sc-d8331fdf-5 > div.sc-d8331fdf-1 > div.sc-5340b511-1 > img.sc-5340b511-0
snippet: <img sizes="(min-width: 1008px) 33vw, (min-width: 600px) 66vw, 100vw" srcset="https://ichef.bbci.co.uk/ace/standard/240/cpsprodpb/b1a3/live/631b7d40-303…" src="https://ichef.bbci.co.uk/ace/standard/800/cpsprodpb/b1a3/live/631b7d40-303…" loading="eager" alt="F-15 flying through blue skies, towards the top right of the picture" class="sc-5340b511-0 hLdNfA">

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.

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

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

URLResource SizeEst Savings
The Life Scientific, Jehane Ragai on the science of authenticating artworks a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0m1wsx5.jpg.webp57.4 KiB38.8 KiB
Witness History, Witness History, Anthony Bourdain's Don't Eat Before Reading T… a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0n52myh.jpg.webp54.4 KiB35.8 KiB
Business Daily, Business Daily, Is this social media's 'Big Tobacco moment'? a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0n9yqxb.jpg.webp50.0 KiB31.3 KiB
The Documentary Podcast, The Saltmakers a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0nb1mbl.jpg.webp43.0 KiB24.4 KiB
An illustration of a hand holding a manu2019s nose with odour particles and wav… div.sc-8a86ca4a-1 > div.sc-8a86ca4a-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0nbh3q0.jpg.webp64.1 KiB23.6 KiB
The Global Story, The Global Story, I wargamed Iran for the Pentagon - here is … a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0nb6m23.jpg.webp31.1 KiB13.6 KiB
Westminster Abbey: Behind Closed Doors div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0m2bkzn.jpg.webp38.4 KiB13.4 KiB
Phil Spencer's Stately Homes div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0n3cq6z.jpg.webp31.3 KiB6.3 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.

TTI

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.

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.

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

CategoryTime Spent
Script Evaluation5.7 s
Style & Layout1.4 s
Other1.1 s
Script Parsing & Compilation377 ms
Rendering187 ms
Parse HTML & CSS173 ms
Garbage Collection142 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

Failure reasonFailure type
The page has an unload handler in a sub frame.Actionable

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Estimated savings: 0.0 ms 2.1 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

URL
Phil Spencer's Stately Homes div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0n3cq6z.jpg.webp
Art That Made Us div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0n3ckc6.jpg.webp
Expedition Killer Whale div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0n7vy55.jpg.webp
Elizabeth II: The Unseen Photos div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0n51w81.jpg.webp
Spectacular Earth div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0m2bpkc.jpg.webp
Stuff the British Stole div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0m2bqvt.jpg.webp
Westminster Abbey: Behind Closed Doors div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0m2bkzn.jpg.webp
Joanna Lumley's Danube: Europe's Mightiest River div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0m2bgmn.jpg.webp
A Ship Through Time div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0mmzd91.jpg.webp
Ancient Treasures with Bettany Hughes div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0m2djkd.jpg.webp
The Zero Line: Inside Russia's War div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0n367wh.jpg.webp
Alexander Armstrong in India div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0n4vby9.jpg.webp
World's Most Amazing Walks div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0m69y3v.jpg.webp
One Week One Title: Football in Greenland div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0mw4552.jpg.webp
Civilizations: Rise and Fall div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0mjhwn5.jpg.webp
Rage Against the Regime: Iran div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/320xn/p0m2d1l2.jpg.webp

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

Layout shift culprits
Document request latency
Optimize DOM size
LCP breakdown
Modern HTTP
Render blocking requests
Optimize viewport for mobile
Minify JavaScript
Reduce unused CSS
User Timing marks and measures 8 user timings
Avoid long main-thread tasks 20 long tasks found
Network Requests
Network Round Trip Times 70 ms
Server Backend Latencies 300 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 0 ms
Avoid large layout shifts 1 layout shift found
INP breakdown
Avoid non-composited animations
91

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.

Failing Elements
div.sc-643c51a4-1 > div.sc-643c51a4-6 > div.sc-5248fb9c-9 > button.sc-5248fb9c-0 div.sc-643c51a4-1 > div.sc-643c51a4-6 > div.sc-5248fb9c-9 > button.sc-5248fb9c-0

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Failing Elements
The Korean food ritual that leads to happiness div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
The venerable nun Sunjae shares how we can feel calmer and more supported, just… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Discover the World div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Four Japanese principles to lead a good life div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
How Japan's samurai tea ceremony and cherry blossoms hold the recipe for a mean… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Culture & Experiences div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Döstädning: The gentle art of Swedish death cleaning div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Swedish death cleaning helps people in the later years of their life find peace… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Discover the World div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Is human connection the new job security? div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Katty Kay speaks to Jane Wurwand about her theory about what jobs are best prot… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Katty Kay div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Margot Robbie's accent was 'too Australian' for Neighbours div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
The actress reveals that she had a dialect coach when she was on the series bec… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Film & TV div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Idris Elba used his waxwork figure to unlock his phone div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
The actor's Madame Tussauds waxwork is so lifelike that it was able to unlock h… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Film & TV div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Jacob Elordi turned an insult into an Oscar nomination div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Jacob Elordi jokes about an early career review calling him so wooden he could … a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Film & TV div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Rachel McAdams has many fans on the sofa div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Chris Hemsworth, Halle Berry and John Bishop tell Rachel McAdams why they love … a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Film & TV div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Sign up to Tech Decoded div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Decode the biggest developments in global technology, in your inbox every Monda… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Download the BBC app div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Click here to download the BBC app for Apple and Android devices. a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
US Politics Unspun div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
No noise. No agenda. Just expert analysis of the issues that matter most from A… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Register for a BBC account div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Don't have time to read everything right now? Your BBC account lets you save ar… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Sign up for the Essential List div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
The week's best stories, handpicked by BBC editors, in your inbox every Tuesday… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4

These are opportunities to improve the legibility of your content.

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

Failing Elements
The Interface Why Can't People Stop Watching AI Fruit? div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
The Global Story I wargamed Iran for the Pentagon - here is how it could end div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
13 Minutes Presents: Artemis II 1. Why humans are returning to the Moon div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Business Daily Is this social media's 'Big Tobacco moment'? div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
History's Heroes Washington and Emily Roebling: Superstars of Suspension div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
The Interview Winnie Byanyima, head of UNAids: I am somebody who fights for soc… div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Witness History Anthony Bourdain's Don't Eat Before Reading This div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
The Life Scientific Jehane Ragai on the science of authenticating artworks div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
The Documentary Podcast The Saltmakers div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Phil Spencer's Stately Homes div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Art That Made Us div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Expedition Killer Whale div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Elizabeth II: The Unseen Photos div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Spectacular Earth div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Stuff the British Stole div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Westminster Abbey: Behind Closed Doors div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Joanna Lumley's Danube: Europe's Mightiest River div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
A Ship Through Time div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Ancient Treasures with Bettany Hughes div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
The Zero Line: Inside Russia's War div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Alexander Armstrong in India div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
World's Most Amazing Walks div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
One Week One Title: Football in Greenland div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Civilizations: Rise and Fall div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Rage Against the Regime: Iran div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Not by the Playbook Risk and fear div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Football Daily The Commentators’ View: Shabby shoes & Royal Oak FC div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
More than the Score Have set pieces taken over the Premier League? div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Football Daily That Season When... Liverpool Beat Newcastle 4-3 div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
The Wayne Rooney Show Hodgson On ROCKY Ronaldo Relationship & Is Guehi Up There… div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Football Daily Euro Leagues: Italy World Cup fallout & Bosnia delight div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
More than the Score Why are sports trading cards such big business? div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
F1: Chequered Flag Chequered Flag Extra: Verstappen’s Future, Bearman’s Crash &… div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
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
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
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
Skip links are focusable.
Document has a main landmark.
Deprecated ARIA roles were not used
Image elements do not have `[alt]` attributes that are redundant text.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
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.
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.
`[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
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.
100

Best Practices

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
Page has valid source maps
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
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
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

70
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

628 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

1.43 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

563 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.012

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

1.83 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

5.15 s

Detailed Report

Audit breakdown by category with detailed findings.

70

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

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

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

RequestCache TTLTransfer Size
ichef.bbci.co.uk/images/ic/raw/p0m5nfwj.jpg86400.0 s783.7 KiB
cdn.optimizely.com/public/4621041136/s/bbcx_prod.js120.0 s97.1 KiB
cdn.tinypass.com/api/tinypass.min.js14400.0 s131.8 KiB
buy-eu.piano.io/widget/dist/checkout/css/checkout.bundle.1.1.css14400.0 s101.7 KiB
emp.bbci.co.uk/emp/bump-4/bump-4.js300.0 s40.3 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
uk-script.dotmetrics.net/Scripts/script.js?v=3620.0 ms28.4 KiB
ichef.bbci.co.uk/images/ic/800x450/p0nbh3q0.jpg.webp86400.0 s64.5 KiB
ichef.bbci.co.uk/images/ic/800x450/p0m1wsx5.jpg.webp86400.0 s57.8 KiB
ichef.bbci.co.uk/images/ic/800x450/p0n52myh.jpg.webp86400.0 s54.8 KiB
gn-web-assets.api.bbc.com/ngas/latest/dotcom-bootstrap.js360.0 s22.3 KiB
ichef.bbci.co.uk/images/ic/800x450/p0n9yqxb.jpg.webp86400.0 s50.3 KiB
ichef.bbci.co.uk/images/ic/800x450/p0nb1mbl.jpg.webp86400.0 s43.4 KiB
/_sam/H4sIAAAAAAAA_62YS4_bOAyA_1BnjGYve20zu9MCWyBo2l4XtEQ...602361.0 s126.8 KiB
ichef.bbci.co.uk/images/ic/800x450/p0nb6m23.jpg.webp86400.0 s31.4 KiB
ichef.bbci.co.uk/images/ic/800x450/p0nb317m.jpg.webp86400.0 s25.8 KiB
buy-eu.piano.io/widget/dist/checkout/css/img/Loader.gif14400.0 s15.0 KiB
ichef.bbci.co.uk/images/ic/800x450/p0nbbw83.jpg.webp86400.0 s24.9 KiB
ichef.bbci.co.uk/images/ic/240xn/p0m2bkzn.jpg.webp86400.0 s23.0 KiB
ichef.bbci.co.uk/images/ic/800x450/p0mq3vt9.jpg.webp86400.0 s22.7 KiB
ichef.bbci.co.uk/images/ic/800x450/p0n1lmv8.jpg.webp86400.0 s21.2 KiB
ichef.bbci.co.uk/images/ic/240xn/p0n3cq6z.jpg.webp86400.0 s20.8 KiB
ichef.bbci.co.uk/images/ic/800x450/p0n9s4tg.jpg.webp86400.0 s18.9 KiB
ichef.bbci.co.uk/images/ic/240xn/p0m2bgmn.jpg.webp86400.0 s17.8 KiB
static.chartbeat.com/js/chartbeat.js86400.0 s15.9 KiB
ichef.bbci.co.uk/images/ic/240xn/p0mmzd91.jpg.webp86400.0 s15.0 KiB
cdn.cxense.com/cx.cce.js3600.0 s6.8 KiB
/ng/common/i18n/platform-translation-map_en_US.js?version...86400.0 s13.5 KiB
ichef.bbci.co.uk/images/ic/240xn/p0m2bpkc.jpg.webp86400.0 s13.4 KiB
ichef.bbci.co.uk/images/ic/240xn/p0n51w81.jpg.webp86400.0 s13.2 KiB
ichef.bbci.co.uk/images/ic/240xn/p0n3ckc6.jpg.webp86400.0 s13.0 KiB
ichef.bbci.co.uk/images/ic/240xn/p0m2bqvt.jpg.webp86400.0 s11.1 KiB
ichef.bbci.co.uk/images/ic/240xn/p0n7vy55.jpg.webp86400.0 s10.9 KiB
/checkout/general/loadTranslationMap?aid=7I7hmRshpe&versi...86400.0 s10.4 KiB
/hit.gif?id=13934&url=https%3A%2F%2Fwww.bbc.com%2F&dom=ww...86400.0 s1.2 KiB
/Repo/rep.gif?ver=3.3.0&typ=pgv&rnd=mnkigcxbgu8engdu&sid=...0.0 ms411 B
buy-eu.piano.io/ng/common/pn-spinner/pn-spinner.css14400.0 s490 B
/_sam/H4sIAAAAAAAA_62YS4_bOAyA_1BnjGYve20zu9MCWyBo2l4XtEQ...602361.0 s0 B
buy-eu.piano.io/widget/dist/checkout/css/checkout.bundle.1.1.css14400.0 s0 B
/ng/common/i18n/platform-translation-map_en_US.js?version...86400.0 s0 B
/checkout/general/loadTranslationMap?aid=7I7hmRshpe&versi...86400.0 s0 B
buy-eu.piano.io/widget/dist/checkout/css/img/Loader.gif14400.0 s0 B
buy-eu.piano.io/ng/common/pn-spinner/pn-spinner.css14400.0 s0 B

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.

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:4.642 source:map[column:125295 line:1 type:source-location url:https://cdn.tinypass.com/api/tinypass.min.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:103.059 source:map[type:text value:[unattributed]]] map[reflowTime:0.38 source:map[column:324233 line:0 type:source-location url:https://cdn.tinypass.com/api/tinypass.min.js urlProvider:network]] map[reflowTime:0.236 source:map[column:71622 line:5 type:source-location url:https://cdn.cxense.com/cx.js urlProvider:network]] map[reflowTime:1.724 source:map[column:294579 line:0 type:source-location url:https://cdn.tinypass.com/api/tinypass.min.js urlProvider:network]] map[reflowTime:2.421 source:map[column:33383 line:0 type:source-location url:https://cdn.tinypass.com/api/tinypass.min.js urlProvider:network]] map[reflowTime:0.497 source:map[column:33416 line:0 type:source-location url:https://cdn.tinypass.com/api/tinypass.min.js urlProvider:network]]]

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

lhId: page-0-IMG
nodeLabel: F-15 flying through blue skies, towards the top right of the picture
path: 1,HTML,1,BODY,0,DIV,0,DIV,10,MAIN,0,ARTICLE,1,SECTION,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,IMG
selector: div.sc-d8331fdf-5 > div.sc-d8331fdf-1 > div.sc-5340b511-1 > img.sc-5340b511-0
snippet: <img sizes="(min-width: 1008px) 33vw, (min-width: 600px) 66vw, 100vw" srcset="https://ichef.bbci.co.uk/ace/standard/240/cpsprodpb/b1a3/live/631b7d40-303…" src="https://ichef.bbci.co.uk/ace/standard/480/cpsprodpb/b1a3/live/631b7d40-303…" loading="eager" alt="F-15 flying through blue skies, towards the top right of the picture" class="sc-5340b511-0 hLdNfA">

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.

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

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

URLResource SizeEst Savings
The Life Scientific, Jehane Ragai on the science of authenticating artworks a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0m1wsx5.jpg.webp57.4 KiB48.1 KiB
Witness History, Witness History, Anthony Bourdain's Don't Eat Before Reading T… a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0n52myh.jpg.webp54.4 KiB45.1 KiB
Business Daily, Business Daily, Is this social media's 'Big Tobacco moment'? a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0n9yqxb.jpg.webp50.0 KiB40.6 KiB
The Documentary Podcast, The Saltmakers a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0nb1mbl.jpg.webp43.0 KiB33.6 KiB
An illustration of a hand holding a manu2019s nose with odour particles and wav… div.sc-8a86ca4a-1 > div.sc-8a86ca4a-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0nbh3q0.jpg.webp64.1 KiB29.4 KiB
The Global Story, The Global Story, I wargamed Iran for the Pentagon - here is … a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0nb6m23.jpg.webp31.1 KiB22.2 KiB
An official works among the burnt out ambulances at the scene of an antisemitic… div.sc-329e5f2b-3 > div.sc-329e5f2b-4 > div.sc-5340b511-1 > img.sc-5340b511-0
/news/480/cpsprodpb/164f/live/63f11bc0-28ea-11f1-a95f-754...29.7 KiB21.5 KiB
The Interface, The Interface, Why Can't People Stop Watching AI Fruit? a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0nbbw83.jpg.webp24.5 KiB17.5 KiB
History's Heroes, History's Secret Heroes, Washington and Emily Roebling: Super… a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0mq3vt9.jpg.webp22.4 KiB16.0 KiB
13 Minutes Presents: Artemis II, Artemis II, 1. Why humans are returning to the… a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0n1lmv8.jpg.webp20.8 KiB14.9 KiB
The Interview, The Interview, Winnie Byanyima, head of UNAids: I am somebody wh… a.sc-8a623a54-0 > div.sc-d2483551-0 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/800x450/p0n9s4tg.jpg.webp18.6 KiB13.3 KiB
Westminster Abbey: Behind Closed Doors div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0m2bkzn.jpg.webp22.7 KiB8.6 KiB
Phil Spencer's Stately Homes div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0n3cq6z.jpg.webp20.4 KiB6.4 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.

TTI

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.

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.

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.

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

CategoryTime Spent
Script Evaluation1.6 s
Other426 ms
Style & Layout327 ms
Script Parsing & Compilation114 ms
Rendering66 ms
Parse HTML & CSS57 ms
Garbage Collection47 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

Failure reasonFailure type
The page has an unload handler in a sub frame.Actionable

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Estimated savings: 0.0 ms 2.1 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

URL
Phil Spencer's Stately Homes div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0n3cq6z.jpg.webp
Art That Made Us div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0n3ckc6.jpg.webp
Expedition Killer Whale div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0n7vy55.jpg.webp
Elizabeth II: The Unseen Photos div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0n51w81.jpg.webp
Spectacular Earth div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0m2bpkc.jpg.webp
Stuff the British Stole div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0m2bqvt.jpg.webp
Westminster Abbey: Behind Closed Doors div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0m2bkzn.jpg.webp
Joanna Lumley's Danube: Europe's Mightiest River div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0m2bgmn.jpg.webp
A Ship Through Time div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0mmzd91.jpg.webp
Ancient Treasures with Bettany Hughes div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0m2djkd.jpg.webp
The Zero Line: Inside Russia's War div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0n367wh.jpg.webp
Alexander Armstrong in India div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0n4vby9.jpg.webp
World's Most Amazing Walks div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0m69y3v.jpg.webp
One Week One Title: Football in Greenland div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0mw4552.jpg.webp
Civilizations: Rise and Fall div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0mjhwn5.jpg.webp
Rage Against the Regime: Iran div.sc-77366b81-1 > div.sc-77366b81-2 > div.sc-5340b511-1 > img.sc-5340b511-0
ichef.bbci.co.uk/images/ic/240xn/p0m2d1l2.jpg.webp

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

Layout shift culprits
Document request latency
Optimize DOM size
LCP breakdown
Modern HTTP
Render blocking requests
Optimize viewport for mobile
Minify JavaScript
Reduce unused CSS
User Timing marks and measures 8 user timings
Avoid long main-thread tasks 12 long tasks found
Network Requests
Network Round Trip Times 70 ms
Server Backend Latencies 300 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 10 ms
Avoid large layout shifts 2 layout shifts found
INP breakdown
Avoid non-composited animations
96

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.

Failing Elements
The Korean food ritual that leads to happiness div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
The venerable nun Sunjae shares how we can feel calmer and more supported, just… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Discover the World div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Four Japanese principles to lead a good life div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
How Japan's samurai tea ceremony and cherry blossoms hold the recipe for a mean… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Culture & Experiences div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Döstädning: The gentle art of Swedish death cleaning div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Swedish death cleaning helps people in the later years of their life find peace… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Discover the World div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Is human connection the new job security? div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Katty Kay speaks to Jane Wurwand about her theory about what jobs are best prot… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Katty Kay div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Margot Robbie's accent was 'too Australian' for Neighbours div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
The actress reveals that she had a dialect coach when she was on the series bec… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Film & TV div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Idris Elba used his waxwork figure to unlock his phone div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
The actor's Madame Tussauds waxwork is so lifelike that it was able to unlock h… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Film & TV div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Jacob Elordi turned an insult into an Oscar nomination div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Jacob Elordi jokes about an early career review calling him so wooden he could … a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Film & TV div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Rachel McAdams has many fans on the sofa div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Chris Hemsworth, Halle Berry and John Bishop tell Rachel McAdams why they love … a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Film & TV div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > div.sc-1907e52a-0 > span.sc-1907e52a-2
Sign up to Tech Decoded div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Decode the biggest developments in global technology, in your inbox every Monda… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Download the BBC app div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Click here to download the BBC app for Apple and Android devices. a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
US Politics Unspun div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
No noise. No agenda. Just expert analysis of the issues that matter most from A… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Register for a BBC account div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
Don't have time to read everything right now? Your BBC account lets you save ar… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4
Sign up for the Essential List div.sc-8a86ca4a-3 > div.sc-feaf8701-1 > div.sc-feaf8701-0 > h2.sc-feaf8701-3
The week's best stories, handpicked by BBC editors, in your inbox every Tuesday… a.sc-8a623a54-0 > div.sc-8a86ca4a-0 > div.sc-8a86ca4a-3 > p.sc-8a86ca4a-4

These are opportunities to improve the legibility of your content.

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

Failing Elements
The Interface Why Can't People Stop Watching AI Fruit? div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
The Global Story I wargamed Iran for the Pentagon - here is how it could end div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
13 Minutes Presents: Artemis II 1. Why humans are returning to the Moon div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Business Daily Is this social media's 'Big Tobacco moment'? div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
History's Heroes Washington and Emily Roebling: Superstars of Suspension div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
The Interview Winnie Byanyima, head of UNAids: I am somebody who fights for soc… div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Witness History Anthony Bourdain's Don't Eat Before Reading This div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
The Life Scientific Jehane Ragai on the science of authenticating artworks div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
The Documentary Podcast The Saltmakers div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Phil Spencer's Stately Homes div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Art That Made Us div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Expedition Killer Whale div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Elizabeth II: The Unseen Photos div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Spectacular Earth div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Stuff the British Stole div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Westminster Abbey: Behind Closed Doors div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Joanna Lumley's Danube: Europe's Mightiest River div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
A Ship Through Time div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Ancient Treasures with Bettany Hughes div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
The Zero Line: Inside Russia's War div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Alexander Armstrong in India div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
World's Most Amazing Walks div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
One Week One Title: Football in Greenland div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Civilizations: Rise and Fall div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Rage Against the Regime: Iran div.sc-e9d411bd-1 > div.sc-225578b-0 > div > a.sc-8a623a54-0
Not by the Playbook Risk and fear div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Football Daily The Commentators’ View: Shabby shoes & Royal Oak FC div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
More than the Score Have set pieces taken over the Premier League? div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Football Daily That Season When... Liverpool Beat Newcastle 4-3 div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
The Wayne Rooney Show Hodgson On ROCKY Ronaldo Relationship & Is Guehi Up There… div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Football Daily Euro Leagues: Italy World Cup fallout & Bosnia delight div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
More than the Score Why are sports trading cards such big business? div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
F1: Chequered Flag Chequered Flag Extra: Verstappen’s Future, Bearman’s Crash &… div.sc-225578b-0 > div.sc-d2483551-4 > div > a.sc-8a623a54-0
Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Image elements have `[alt]` attributes
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
ARIA attributes are used as specified for the element's role
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
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
Skip links are focusable.
Document has a main landmark.
Deprecated ARIA roles were not used
Image elements do not have `[alt]` attributes that are redundant text.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
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.
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.
`[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
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.
100

Best Practices

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
Page has valid source maps
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
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
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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