CopyPoison vs HTTP/3
Head-to-head usage across the sites we track.
Top sites by authority
CopyPoison · 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
3,585
Open Page Rank 7+
0
16,999
Open Page Rank 6+
0
36,992
Open Page Rank 5+
1
72,016
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
CopyPoison · HTTP/3 · share of sites in each country using one or the other
United States
9
1,137,483
India
4
533,896
Brazil
3
409,200
United Kingdom
7
387,999
Indonesia
5
291,484
Germany
6
286,932
Italy
5
284,574
Canada
3
281,458
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | CopyPoison | HTTP/3 |
|---|---|---|
| LCP | 1.7 s | 1.9 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 700 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
CopyPoison to HTTP/3
| Domain | When |
|---|---|
| homeclima.com | Sep 2026 |