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
65
Open Page Rank 8+
12
1,175
Open Page Rank 7+
64
4,610
Open Page Rank 6+
107
8,806
Open Page Rank 5+
179
15,365
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
2,504
130,630
Japan
397
92,821
Brazil
749
56,858
India
1,753
46,313
United Kingdom
938
46,044
France
614
42,093
Italy
445
38,753
Canada
779
35,702
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, Jun 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.
Facebook Login to Clerk
| Domain | When |
|---|---|
| canstar.com.au | Sep 2025 |