Log in Register
Latest public test screenshot

https://www.bbc.co.uk/

https://www.bbc.co.uk/

See the website health and performance test results for https://www.bbc.co.uk/, including status code, load speed, SSL, WHOIS, DNS, console logs, Chrome UX Report, resource sizes, and Pagespeed findings.

Tested on 12 Jun 2026 08:35:03.

New test

Up
  • HTTP status 200
  • Response time 611 ms
  • Document load time 0 ms
  • Full page load time 0 ms
  • Document size 0 B
  • Full page size 0 B
29/100
  • Mobile score 29
  • Desktop score 0

Observer's Performance Suggestions

Priority actions Observer identified from this test to improve speed, reliability, and user experience.

Poor mobile performance score (29/100)
Error High

Lighthouse rates this page as poor. Address render-blocking, image, and JavaScript audits below. Read more

High Total Blocking Time (1731 ms)
Warning High

Long JavaScript tasks block the main thread, making the page feel unresponsive. Split long tasks, defer non-critical scripts, and reduce third-party JavaScript. Read more

Slow Speed Index (10.1 s)
Warning High

The page takes too long to visually complete. Optimize critical rendering path, reduce render-blocking resources, and serve visible content first. Read more

Domain transfer lock is not enabled
Warning Medium

The domain has neither clientTransferProhibited nor serverTransferProhibited status, which means it could be transferred to another registrar without additional safeguards. Enable transfer lock through your registrar to prevent unauthorized transfers. Read more

SSL certificate expires in 45 days
Info Medium

Plan a renewal soon to keep auto-renewal buffers comfortable. Read more

Reduce unused JavaScript
Info Medium

Strip JavaScript that the page does not use to reduce parse and download time. Read more

73% of traffic is mobile
Info Medium

The majority of real users visit on mobile devices. Prioritize mobile performance optimizations, responsive design, and touch-friendly interactions. Read more

No IPv6 (AAAA) records
Info Low

IPv6-only clients cannot reach the site. Add AAAA records for full network reachability. Read more

Did you know?

Observer tracks these signals every day and alerts you the moment something important changes. Register now.

27 Jul 2026

30 days left

Whois

Registrar
British Broadcasting Corporation [Tag = BBC]

SSL

SSL available
Yes
SSL status
valid
Issuer
C=BE,O=GlobalSign nv-sa,CN=GlobalSign RSA OV SSL CA 2018
Subject
C=GB,ST=London,L=London,O=BRITISH BROADCASTING CORPORATION,CN=www.bbc.com
TLS version
TLSv1.3
Self-signed
No
Valid until
27 Jul 2026

DNS Records

Current DNS records returned for this domain at the time of the test.

DNS status
resolved
  • 151.101.0.81
  • 151.101.128.81
  • 151.101.192.81
  • 151.101.64.81

No records returned.

  • www.bbc.co.uk.pri.bbc.co.uk
  • cluster1.eu.messagelabs.com
  • cluster1a.eu.messagelabs.com
  • ddns0.bbc.co.uk
  • ddns0.bbc.com
  • ddns1.bbc.co.uk
  • ddns1.bbc.com
  • dns0.bbc.co.uk
  • dns0.bbc.com
  • dns1.bbc.co.uk
  • dns1.bbc.com
  • Huddle
  • J0kgGm0XqA3/6pLD4DHeC5x/dAduzT809P1Iwx/PRCYvVS32rv75RIHKC2aVz47dJxKhPlxGf3h3KXiL6+dyXw==
  • _globalsign-domain-verification=nru5P3kr6LQEU2v-_jv_VIViaFjoKlPwrKQsRqnKVf
  • access-domain-verification=d2445ac4134b4b6322bf8d546458c73e00100ee3eca47fa1a8646350ea2c18bb
  • adobe-idp-site-verification=9b850a4a56e3fac19aea1e0ac5db302e5cefab444cd73519dce1c72ccd4db058
  • apple-domain-verification=jFFO0rdS9IrxgWUR
  • asv=0f1cb0a74a95764aafe8161309533029
  • atlassian-domain-verification=SQsgJ5h/FqwMTXuSG/G4Nd1Gx6uX2keREOsZSa22D5XT46EsEuyaic8Aej4cR4Tr
  • docker-verification=aab67462-78f7-4ade-a86b-358645923430
  • docusign=50f10407-e3e4-4f6a-aae4-712d4eb31329
  • docusign=a10ad7b6-cf7e-472d-8157-23061f5b5116
  • dropbox-domain-verification=l5djk65wpy3z
  • google-site-verification=ITX3CwHXxGVfkCmhF4eSwdfo8h2ZGLAZ3zRpYvZi5XA
  • google-site-verification=RaiMXJBIiFvqXHd43kv_ekzmXT2l8ibq5Xy0mulndvU
  • google-site-verification=Rhy5gpa1LeMjUY6gxrds3K4bhB_SUv-fYU9D3kpeAc8
  • mongodb-site-verification=XEpCXFkFHrAUlb6oIEIe3hJz6NjerLhU
  • msfpkey=3e29l8m08bqxp19k63t73fj5b
  • slack-domain-verification=wMCDUxtzgNFdmaVVeB6w6mDT8srz7ZIWqzV31zPu
  • v=spf1 ip4:212.58.224.0/19 ip4:132.185.0.0/16 +include:spf.sis.bbc.co.uk +include:spf.messagelabs.com ~all
  • voUGv5zARbEV516E/S8Ugsy9/FOgDGg4n/rpmKZQRROVOj0+2tgzKw3Tk9+Ks6qVbNKU18KTrR5khxTQutDvBg==
  • yahoo-verification-key=+1K3fj4MM7tT8erFBTbBdDwhSGqBf37fO60f7R7MHbE=

Resource Summary

Transfer size share of the tested page split by resource type.

Total 3.71 MB 191 requests 100% of total size
Script 1.76 MB 114 requests 48% of total size
Image 1.11 MB 56 requests 30% of total size
Font 630.13 KB 10 requests 17% of total size
Document 196.29 KB 3 requests 5.2% of total size
Other 23.56 KB 7 requests 0.6% of total size
Stylesheet 2.11 KB 1 requests 0.1% of total size
Media 0 B 0 requests 0.0% of total size
Third-party 3.59 MB 189 requests 97% of total size

Core Web Vitals

Key performance signals from Lighthouse, with color-coded status for what is healthy and what still needs work.

Good Time to First Byte 613 ms

The server starts responding quickly.

Poor First Contentful Paint 10.13 s

Users wait too long before any content appears.

Poor Largest Contentful Paint 17.09 s

Main visible content takes too long to appear.

Good Cumulative Layout Shift 0.000

The layout stays visually stable while loading.

Poor Speed Index 10.13 s

Visual loading is significantly delayed.

Poor Total Blocking Time 1.73 s

Heavy blocking is likely hurting responsiveness.

Poor Max Potential FID 1.17 s

Potential input delay is high.

Poor Time to Interactive 22.1 s

Users wait too long before the page responds.

TTFB 613 ms
FCP 10.13 s
LCP 17.09 s
TTI 22.1 s

Loading Filmstrip

Visual loading progress from the Lighthouse run, shown in time order.

Mobile filmstrip frame at 375 ms
375 ms
Mobile filmstrip frame at 750 ms
750 ms
Mobile filmstrip frame at 1.13 s
1.13 s
Mobile filmstrip frame at 1.5 s
1.5 s
Mobile filmstrip frame at 1.88 s
1.88 s
Mobile filmstrip frame at 2.25 s
2.25 s
Mobile filmstrip frame at 2.63 s
2.63 s
Mobile filmstrip frame at 3 s
3 s

Google Pagespeed Insights

Switch between desktop and mobile Lighthouse results to review the latest performance findings for this page.

Mobile 29
Desktop 0

Audit Details

Audit Insight Impact
Max Potential First Input Delay

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.

 1,170 ms
Reduce unused JavaScript

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

  • https://prebid.the-ozone-project.com/hw2/builds/ozwrap_pbjs.js Potential savings: 134.32 KB
  • https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202606090101/pubads_impl.js?cb=31099090 Potential savings: 101.93 KB
  • https://cdn.tinypass.com/api/tinypass.min.js Potential savings: 71.19 KB
  • https://mybbc-analytics.files.bbci.co.uk/echo-client-js/echo-2.6.0-avi.min.js Potential savings: 63.74 KB
  • https://cdn.privacy-mgmt.com/unified/4.40.1/usnat.f12613136193900e32e2.bundle.js Potential savings: 62.58 KB
Est savings of 1,140 KiB
LCP request discovery

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

 Open
Forced reflow

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.

 Open
Improve image delivery

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

  • https://ichef.bbci.co.uk/images/ic/976xn/p0nrcz3c.jpg.webp This image file is larger than it needs to be (976x549) for its displayed dimensions (333x187). Use responsive images to reduce the image download size. | Potential savings: 54.03 KB
  • https://ichef.bbci.co.uk/ace/standard/800/cpsprodpb/19ee/live/31485490-661b-11f1-ac3e-c1a2e88f59e9.jpg.webp This image file is larger than it needs to be (800x449) for its displayed dimensions (333x187). Use responsive images to reduce the image download size. | Potential savings: 45.19 KB
  • https://ichef.bbci.co.uk/ace/standard/960/cpsprodpb/bf58/live/e0108980-65a7-11f1-b1db-af71d47507d6.jpg.webp This image file is larger than it needs to be (960x540) for its displayed dimensions (333x187). Use responsive images to reduce the image download size. | Potential savings: 40 KB
  • https://ichef.bbci.co.uk/ace/standard/960/cpsprodpb/0e23/live/ffaf8350-662d-11f1-b1db-af71d47507d6.jpg.webp This image file is larger than it needs to be (960x539) for its displayed dimensions (333x187). Use responsive images to reduce the image download size. | Potential savings: 30.95 KB
  • https://ichef.bbci.co.uk/ace/standard/624/cpsprodpb/a9d9/live/fb473080-65c7-11f1-a495-71dd2487e71b.jpg.webp This image file is larger than it needs to be (624x351) for its displayed dimensions (333x187). Use responsive images to reduce the image download size. | Potential savings: 29.46 KB
Est savings of 481 KiB
Largest Contentful Paint

Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric

 17.1 s
First Contentful Paint

First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric.

 10.1 s
Network dependency tree

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.

 Open
Minimize main-thread work

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

 6.5 s
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 reduce Javascript execution time.

  • https://static.files.bbci.co.uk/core/bundle-default-vendors.80cc52de60776c8582ef.js
  • https://static.files.bbci.co.uk/bbcdotcom/web/20260609-143108-fe43574f32-web-3.9.0-5/_next/static/chunks/03os._ahtrv41.js
  • https://www.bbc.com/
  • Unattributable
  • https://static.files.bbci.co.uk/bbcdotcom/web/20260609-143108-fe43574f32-web-3.9.0-5/_next/static/chunks/turbopack-0p5p~ovahkp9e.js
4.2 s
Avoid multiple page redirects

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

  • https://www.bbc.co.uk/
  • https://www.bbc.com/
Est savings of 8,310 ms
Time to Interactive

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.

 22.1 s
Speed Index

Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric.

 10.1 s
Total Blocking Time

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more about the Total Blocking Time metric.

 1,730 ms
Minify CSS

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

  • .hygVWX { text-decoration: none; cursor: pointer; color: unset; } … Potential savings: 2.22 KB
Est savings of 2 KiB
Use efficient cache lifetimes

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

  • https://ichef.bbci.co.uk/images/ic/976xn/p0nrcz3c.jpg.webp Potential savings: 24.67 KB | Cache lifetime: 86400 s
  • https://ichef.bbci.co.uk/images/ic/624xn/p0nrkrh6.jpg.webp Potential savings: 11.86 KB | Cache lifetime: 86400 s
  • https://ichef.bbci.co.uk/images/ic/400xn/p0nrll76.jpg.webp Potential savings: 10.41 KB | Cache lifetime: 86400 s
  • https://nav.files.bbci.co.uk/orbit/2.0.0-502.c3ab836/js/require.min.js Potential savings: 2.9 KB | Cache lifetime: 86400 s
  • https://sb.scorecardresearch.com/beacon.js Potential savings: 2.77 KB | Cache lifetime: 86400 s
Est savings of 53 KiB
Avoid enormous network payloads

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

  • https://cdn.tinypass.com/api/tinypass.min.js
  • https://static.files.bbci.co.uk/core/bundle-default-vendors.80cc52de60776c8582ef.js
  • https://www.bbc.co.uk/
  • https://www.bbc.com/
  • https://cdn.optimizely.com/public/4621041136/s/bbcx_prod.js
Total size was 3,795 KiB

Chrome UX Report

Real-user experience shares from recent Chrome visits to this website.

Origin: https://www.bbc.co.uk

Mobile 73.3% Desktop 22.6% Tablet 4.2%
Metric User experience share 75th percentile
LCP
Good 96.1% Needs improvement 2.5% Poor 1.4%
882 ms
INP
Good 89.1% Needs improvement 7.6% Poor 3.4%
111 ms
CLS
Good 98.1% Needs improvement 0.9% Poor 1.0%
0.00
FCP
Good 95.3% Needs improvement 3.0% Poor 1.6%
704 ms
TTFB
Good 92.6% Needs improvement 5.7% Poor 1.7%
414 ms

Get daily monitoring and instant alerts with Observer.

Register Observer to keep testing your website automatically and react faster when something breaks.

Try Observer Discover
Observer dashboard