HTTP/3 vs Websocket
Head-to-head usage across the sites we track.
Top sites by authority
HTTP/3 · Websocket · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
217
1
Open Page Rank 8+
3,633
4
Open Page Rank 7+
17,286
11
Open Page Rank 6+
37,596
19
Open Page Rank 5+
73,412
27
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
HTTP/3 · Websocket · share of sites in each country using one or the other
United States
1,284,004
289
India
592,975
198
United Kingdom
436,501
189
Brazil
418,679
137
Indonesia
328,375
125
Canada
321,328
172
Germany
316,957
202
Italy
305,727
185
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | HTTP/3 | Websocket |
|---|---|---|
| LCP | 1.9 s | 2.1 s |
| INP | 75 ms | 150 ms |
| CLS | 0 | 0.05 |
| TTFB | 800 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.