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
3,548
Open Page Rank 7+
48
16,334
Open Page Rank 6+
81
34,791
Open Page Rank 5+
156
68,200
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
179
887,410
India
407
336,391
Germany
594
333,621
Japan
68
319,148
United Kingdom
101
282,220
France
87
267,086
Brazil
269
265,509
Italy
48
258,995
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, 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.
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 |