YouTube

YouTube mobile Google Core Web Vitals assessment:

Homepage pagespeed

Mobile pageview experiences of real visitors for YouTube regarding the homepage (https://m.youtube.com/) are as following per metric:

First Contentful Paint (FCP)

Over 28-days period, the 75th percentile FCP is 2629ms.

46.3% had a good FCP experience
35.1% had a moderate FCP experience
18.5% had a poor FCP experience

Largest Contentful Paint (LCP)

Over 28-days period, the 75th percentile LCP is 3828ms.

46.1% had a good LCP experience
31.5% had a moderate LCP experience
22.3% had a poor LCP experience

First Input Delay (FID)

Over 28-days period, the 75th percentile FID is 17ms.

95% had a good FID experience
3.2% had a moderate FID experience
1.8% had a poor FID experience

Cumulative Layout Shift (CLS)

Over 28-days period, the 75th percentile CLS is 13%.

56.8% had a good CLS experience
32.6% had a moderate CLS experience
10.6% had a poor CLS experience

Overall summary pagespeed

Mobile pageview experiences of real visitors for YouTube regarding the overall summary (m.youtube.com) are as following per metric:

First Contentful Paint (FCP)

Over 28-days period, the 75th percentile FCP is 2425ms.

60.2% had a good FCP experience
23.4% had a moderate FCP experience
16.4% had a poor FCP experience

Largest Contentful Paint (LCP)

Over 28-days period, the 75th percentile LCP is 3028ms.

66.6% had a good LCP experience
18.9% had a moderate LCP experience
14.5% had a poor LCP experience

First Input Delay (FID)

Over 28-days period, the 75th percentile FID is 30ms.

86.9% had a good FID experience
7.9% had a moderate FID experience
5.2% had a poor FID experience

Cumulative Layout Shift (CLS)

Over 28-days period, the 75th percentile CLS is 9%.

75% had a good CLS experience
18.3% had a moderate CLS experience
6.7% had a poor CLS experience