GitBook vs Sphinx
Head-to-head usage across the sites we track.
Top sites by authority
GitBook · Sphinx · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
3
6
Open Page Rank 8+
50
32
Open Page Rank 7+
166
71
Open Page Rank 6+
288
96
Open Page Rank 5+
473
131
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
GitBook · Sphinx · share of sites in each country using one or the other
United States
2,236
423
India
1,844
378
Indonesia
1,196
211
Brazil
1,112
224
United Kingdom
1,084
232
Germany
1,051
242
France
921
235
Canada
910
227
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | GitBook | Sphinx |
|---|---|---|
| LCP | 2.1 s | 1.6 s |
| INP | 100 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 700 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.