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
217
Open Page Rank 8+
0
3,633
Open Page Rank 7+
2
17,286
Open Page Rank 6+
2
37,596
Open Page Rank 5+
2
73,412
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
9
1,284,004
India
5
592,975
United Kingdom
3
436,501
Brazil
3
418,679
Indonesia
2
328,375
Canada
4
321,328
Germany
197
316,957
Italy
4
305,727
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, 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.