www.bbc.co.uk

www.bbc.co.uk based on real-user data from Chrome UX Report

All

Mobile

Desktop

Web Vitals

Show Latest

Time to First ByteExp
Time to First Byte (TTFB)Experimental is the time it takes to receive the first byte from the server. A fast TTFB indicates that the server responses quickly.Learn more at web.dev/ttfb/→
i

0.3s

Good <= 0.8s

93.7%

Need Impr.

4.8%

Poor > 1.8s

1.5%

First Contentful Paint
First Contentful Paint (FCP) marks the time when the user can see anything on the screen. A fast FCP helps reassure the user that something is happening.Learn more at web.dev/fcp/→
i

0.7s

Good <= 1.8s

95.1%

Need Impr.

3.1%

Poor > 3.0s

1.8%

Largest Contentful PaintCWV
Largest Contentful Paint (LCP)Core Web Vital marks the time when the page's main content has likely loaded. A fast LCP helps reassure the user that the page is useful.Learn more at web.dev/lcp/→
i

0.9s

Good <= 2.5s

95.3%

Need Impr.

3%

Poor > 4.0s

1.7%

Cumulative Layout ShiftCWV
Cumulative Layout Shift (CLS)Core Web Vital quantifies how often users experience unexpected layout shifts. A fast CLS indicates that the page is delightful.Learn more at web.dev/cls/→
i

0

Good <= 0.1

96.6%

Need Impr.

1.7%

Poor > 0.25

1.7%

Interaction to Next PaintCWV
Interaction to Next Paint (INP)Core Web Vital measures interaction latency. It observes the latency of all interactions a user has made with the page, and reports a single value which all (or nearly all) interactions were below. A low INP means the page was consistently able to respond quickly to user interactions.Learn more at web.dev/inp/→
i

150ms

Good <= 200ms

81.1%

Need Impr.

9.9%

Poor > 500ms

9%

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Geography

Form Factors

Mobile

69%

Desktop

27%

Tablet

4%

Popularity Rank

Top 1,000

Navigations

i

Navigate

70%

i

Cache

0.6%

i

Back-Forward

5.4%

i

Bfcache

71.7% / 13.7%

i

Reload

7.6%

i

Restore

0.2%

i

Prerender

2.5%

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www.bbc.co.uk

Site speed audit for https://www.bbc.co.uk based on real-user data from Chrome UX Report

Web Vitals

Time to First ByteExpTime to First Byte (TTFB)Experimental is the time it takes to receive the first byte from the server. A fast TTFB indicates that the server responses quickly.Learn more at web.dev/ttfb/→i

First Contentful PaintFirst Contentful Paint (FCP) marks the time when the user can see anything on the screen. A fast FCP helps reassure the user that something is happening.Learn more at web.dev/fcp/→i

Largest Contentful PaintCWVLargest Contentful Paint (LCP)Core Web Vital marks the time when the page's main content has likely loaded. A fast LCP helps reassure the user that the page is useful.Learn more at web.dev/lcp/→i

Cumulative Layout ShiftCWVCumulative Layout Shift (CLS)Core Web Vital quantifies how often users experience unexpected layout shifts. A fast CLS indicates that the page is delightful.Learn more at web.dev/cls/→i

Unlock 10x site speed insights with a Treo account:

Geography

Form Factors

Popularity Rank

Navigations

If you want to optimize your site's speed, give Treo a try

Time to First ByteExp
Time to First Byte (TTFB)Experimental is the time it takes to receive the first byte from the server. A fast TTFB indicates that the server responses quickly.Learn more at web.dev/ttfb/→
i

First Contentful Paint
First Contentful Paint (FCP) marks the time when the user can see anything on the screen. A fast FCP helps reassure the user that something is happening.Learn more at web.dev/fcp/→
i

Largest Contentful PaintCWV
Largest Contentful Paint (LCP)Core Web Vital marks the time when the page's main content has likely loaded. A fast LCP helps reassure the user that the page is useful.Learn more at web.dev/lcp/→
i

Cumulative Layout ShiftCWV
Cumulative Layout Shift (CLS)Core Web Vital quantifies how often users experience unexpected layout shifts. A fast CLS indicates that the page is delightful.Learn more at web.dev/cls/→
i