HTTP/3 vs PyScript
Head-to-head usage across the sites we track.
Top sites by authority
HTTP/3 · PyScript · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
208
0
Open Page Rank 8+
3,600
0
Open Page Rank 7+
17,128
0
Open Page Rank 6+
37,410
0
Open Page Rank 5+
72,694
0
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 · PyScript · share of sites in each country using one or the other
United States
1,137,483
5
India
533,896
2
Brazil
409,200
1
United Kingdom
387,999
1
Indonesia
291,484
2
Germany
286,932
1
Italy
284,574
1
Canada
281,458
1
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | HTTP/3 | PyScript |
|---|---|---|
| LCP | 1.9 s | 1.5 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 500 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.