Clerk vs Facebook Login
Head-to-head usage across the sites we track.
Top sites by authority
Clerk · Facebook Login · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
2
61
Open Page Rank 8+
17
1,107
Open Page Rank 7+
77
4,301
Open Page Rank 6+
132
8,197
Open Page Rank 5+
218
14,249
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Clerk · Facebook Login · share of sites in each country using one or the other
United States
2,962
108,921
Japan
425
76,103
Brazil
836
48,745
India
1,955
38,767
United Kingdom
1,020
39,088
France
638
34,350
Italy
520
33,431
Canada
851
30,180
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Clerk | Facebook Login |
|---|---|---|
| LCP | 2.5 s | 1.8 s |
| INP | 125 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 800 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.