Acquire Cobrowse vs HTTP/3
Head-to-head usage across the sites we track.
Top sites by authority
Acquire Cobrowse · HTTP/3 · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
208
Open Page Rank 8+
0
3,591
Open Page Rank 7+
2
17,002
Open Page Rank 6+
2
36,960
Open Page Rank 5+
2
72,129
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Acquire Cobrowse · HTTP/3 · share of sites in each country using one or the other
United States
8
1,141,651
India
6
531,962
Brazil
3
414,021
United Kingdom
3
386,042
Indonesia
2
294,061
Germany
167
289,537
Canada
5
280,974
Italy
4
273,070
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Acquire Cobrowse | HTTP/3 |
|---|---|---|
| LCP | 1.7 s | 1.9 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 800 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.