RSS vs SOBI 2
Head-to-head usage across the sites we track.
Top sites by authority
RSS · SOBI 2 · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
177
0
Open Page Rank 8+
3,520
0
Open Page Rank 7+
16,132
0
Open Page Rank 6+
34,276
0
Open Page Rank 5+
67,039
0
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
RSS · SOBI 2 · share of sites in each country using one or the other
United States
865,432
4
India
329,297
2
Germany
327,527
1
Japan
314,790
0
United Kingdom
281,660
3
Italy
272,529
2
France
271,657
0
Brazil
255,443
1
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | RSS | SOBI 2 |
|---|---|---|
| LCP | 2.1 s | 1.6 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 1100 ms | 900 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.