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+
208
1
Open Page Rank 8+
3,591
5
Open Page Rank 7+
17,002
13
Open Page Rank 6+
36,960
22
Open Page Rank 5+
72,129
31
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
1,141,651
243
India
531,962
166
Brazil
414,021
116
United Kingdom
386,042
155
Indonesia
294,061
109
Germany
289,537
178
Canada
280,974
145
Italy
273,070
154
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | HTTP/3 | Websocket |
|---|---|---|
| LCP | 1.9 s | 2.3 s |
| INP | 75 ms | 150 ms |
| CLS | 0 | 0.05 |
| TTFB | 800 ms | 900 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.