Category:
React
React sites built with Next.js
React sites built with Gatsby
React sites built with Create React App
Dataset:
November 1st 2020 - Mobile
Total sample size
322,685
4.6%
of all 6,971,970 URLs
Web Vitals
Origin-aggregated
First Contentful Paint:
(220,889 origins)
60%
60% of page loads have a good FCP (< 1.8s).
23%
23% of page loads need to improve FCP (1.8s - 3s).
17%
17% of page loads have a poor FCP (> 3s).
(220,889 origins)
Largest Contentful Paint:
(217,348 origins)
60%
60% of page loads have a good LCP (< 2.5s).
21%
21% of page loads need to improve LCP (2.5s - 4s).
19%
19% of page loads have a poor LCP (> 4s).
(217,348 origins)
Cumulative Layout Shift:
(213,469 origins)
72%
72% of page loads have a good CLS (< 0.1).
8%
8% of page loads need to improve CLS (0.1 - 0.25).
20%
20% of page loads have a poor CLS (> 0.25).
(213,469 origins)
First Input Delay:
(155,657 origins)
85%
85% of page loads have a good FID (< 100ms).
8%
8% of page loads need to improve FID (100ms - 300ms).
6%
6% of page loads have a poor FID (> 300ms).
(155,657 origins)
Time To First Byte:
(210,117 origins)
47%
47% of page loads have a good TTFB (< 500ms).
39%
39% of page loads need to improve TTFB (500ms - 1500ms).
14%
14% of page loads have a poor TTFB (> 1500ms).
(210,117 origins)
Compressed requests
295,141 urls
Gzip compressed
75.3%
Brotli compressed
11.9%
Not compressed
12.8%
Total Bytes
322,685 urls
< 200 KB
0.3%
200 KB - 400 KB
2.3%
400 KB - 600 KB
5.5%
600 KB - 800 KB
5.5%
800 KB - 1MB
5.7%
> 1 MB
80.8%
{ }
JavaScript Bytes
322,685 urls
< 200 KB
6.2%
200 KB - 400 KB
15.7%
400 KB - 600 KB
14.0%
600 KB - 800 KB
11.1%
800 KB - 1MB
8.9%
> 1 MB
44.2%
Image Bytes
322,685 urls
< 200 KB
29.3%
200 KB - 400 KB
15.9%
400 KB - 600 KB
10.0%
600 KB - 800 KB
7.1%
800 KB - 1MB
5.3%
> 1 MB
32.3%
About
Data from
HTTP Archive
and
Chrome User Experience Report
GitHub