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+
3,585
5
Open Page Rank 7+
16,999
12
Open Page Rank 6+
36,992
20
Open Page Rank 5+
72,016
28
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
1,137,483
233
India
533,896
168
Brazil
409,200
113
United Kingdom
387,999
141
Indonesia
291,484
100
Germany
286,932
164
Italy
284,574
148
Canada
281,458
137
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | HTTP/3 | Websocket |
|---|---|---|
| LCP | 1.9 s | 2.2 s |
| INP | 75 ms | 150 ms |
| CLS | 0 | 0.05 |
| TTFB | 700 ms | 900 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.