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
5
Open Page Rank 8+
50
32
Open Page Rank 7+
171
72
Open Page Rank 6+
294
99
Open Page Rank 5+
484
140
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
2,277
430
India
1,858
391
Indonesia
1,206
213
Brazil
1,142
237
Germany
1,080
247
United Kingdom
1,083
233
France
937
225
Canada
895
209
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, 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.