m.youtube.com

m.youtube.com based on real-user data from Chrome UX Report

All

Mobile

Desktop

Web Vitals

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

0.8s

Good <= 0.8s

71.6%

Need Impr.

19.5%

Poor > 1.8s

8.9%

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

2.4s

Good <= 1.8s

59.9%

Need Impr.

22.4%

Poor > 3.0s

17.7%

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

3.8s

Good <= 2.5s

58%

Need Impr.

18.7%

Poor > 4.0s

23.3%

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

0.2

Good <= 0.1

59.5%

Need Impr.

18.1%

Poor > 0.25

22.5%

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

350ms

Good <= 200ms

53.3%

Need Impr.

31.1%

Poor > 500ms

15.6%

First Input Delay
First Input Delay (FID)Core Web Vital quantifies the experience users feel when trying to interact with unresponsive pages. A fast FID indicates that the page is usable.Learn more at web.dev/fid/→
i

50ms

Good <= 100ms

81%

Need Impr.

10.6%

Poor > 300ms

8.4%

Past 28-days

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

0.9s

Good <= 0.8s

72.2%

Need Impr.

19.2%

Poor > 1.8s

8.6%

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

2.5s

Good <= 1.8s

59.5%

Need Impr.

22.6%

Poor > 3.0s

17.9%

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

4.0s

Good <= 2.5s

57.5%

Need Impr.

18.7%

Poor > 4.0s

23.8%

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

0.21

Good <= 0.1

59.6%

Need Impr.

17.9%

Poor > 0.25

22.5%

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

327ms

Good <= 200ms

56.1%

Need Impr.

29.7%

Poor > 500ms

14.2%

First Input Delay
First Input Delay (FID)Core Web Vital quantifies the experience users feel when trying to interact with unresponsive pages. A fast FID indicates that the page is usable.Learn more at web.dev/fid/→
i

57ms

Good <= 100ms

81%

Need Impr.

10.6%

Poor > 300ms

8.4%

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Geography

Form Factors

Mobile

93%

Tablet

Connections

4G+

89%

11%

Popularity Rank

Top 1,000

Navigations

Navigate
Navigation is a regular page load. When appropriate, use HTTP-Cache to leverage browser cache and CDN.
i

65%

Reload
Reload occurs by hitting the reload button, entering the address bar, or by undoing a tab close. Frequent reloads suggest user frustration.
Restore may result from browser restarts or tab removals due to memory constraints. On Chrome for Android, restores are reported as reloads.
i

24.9%

Back-Forward
Back-forward is a history navigation using back and forward buttons. Take advantage of the bfcache for near-instant loads. Look to remove bfcache blockers to improve the percentage of bfcache hits.
i

8.7%

Prerender
The page was prerendered, which resulted in near-instant page loads.
i

1.4%

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m.youtube.com

Site speed audit for https://m.youtube.com 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

First Input DelayFirst Input Delay (FID)Core Web Vital quantifies the experience users feel when trying to interact with unresponsive pages. A fast FID indicates that the page is usable.Learn more at web.dev/fid/→i

Past 28-days

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

First Input DelayFirst Input Delay (FID)Core Web Vital quantifies the experience users feel when trying to interact with unresponsive pages. A fast FID indicates that the page is usable.Learn more at web.dev/fid/→i

Geography

Form Factors

Connections

Popularity Rank

Navigations

NavigateNavigation is a regular page load. When appropriate, use HTTP-Cache to leverage browser cache and CDN.i

ReloadReload occurs by hitting the reload button, entering the address bar, or by undoing a tab close. Frequent reloads suggest user frustration.Restore may result from browser restarts or tab removals due to memory constraints. On Chrome for Android, restores are reported as reloads.i

Back-ForwardBack-forward is a history navigation using back and forward buttons. Take advantage of the bfcache for near-instant loads. Look to remove bfcache blockers to improve the percentage of bfcache hits.i

PrerenderThe page was prerendered, which resulted in near-instant page loads.i

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

First Input Delay
First Input Delay (FID)Core Web Vital quantifies the experience users feel when trying to interact with unresponsive pages. A fast FID indicates that the page is usable.Learn more at web.dev/fid/→
i

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

First Input Delay
First Input Delay (FID)Core Web Vital quantifies the experience users feel when trying to interact with unresponsive pages. A fast FID indicates that the page is usable.Learn more at web.dev/fid/→
i

Navigate
Navigation is a regular page load. When appropriate, use HTTP-Cache to leverage browser cache and CDN.
i

Reload
Reload occurs by hitting the reload button, entering the address bar, or by undoing a tab close. Frequent reloads suggest user frustration.
Restore may result from browser restarts or tab removals due to memory constraints. On Chrome for Android, restores are reported as reloads.
i

Back-Forward
Back-forward is a history navigation using back and forward buttons. Take advantage of the bfcache for near-instant loads. Look to remove bfcache blockers to improve the percentage of bfcache hits.
i

Prerender
The page was prerendered, which resulted in near-instant page loads.
i