HTTP/2 vs RSS
Head-to-head usage across the sites we track.
Top sites by authority
HTTP/2 · RSS · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
179
Open Page Rank 8+
11
3,525
Open Page Rank 7+
47
16,163
Open Page Rank 6+
79
34,380
Open Page Rank 5+
152
67,346
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
HTTP/2 · RSS · share of sites in each country using one or the other
United States
174
865,432
India
400
329,297
Germany
595
327,527
Japan
76
314,790
United Kingdom
98
281,660
Italy
58
272,529
France
92
271,657
Brazil
273
255,443
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | HTTP/2 | RSS |
|---|---|---|
| LCP | 1.4 s | 2.1 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 1100 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.
RSS to HTTP/2
| Domain | When |
|---|---|
| hambuehren.de | Jul 2026 |
| nhidcl.com | Jun 2026 |
| chdeducation.gov.in | Jun 2026 |