Attentive vs Clerk.io
Head-to-head usage across the sites we track.
Top sites by authority
Attentive · Clerk.io · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
4
2
Open Page Rank 8+
38
2
Open Page Rank 7+
197
7
Open Page Rank 6+
442
12
Open Page Rank 5+
894
35
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Attentive · Clerk.io · share of sites in each country using one or the other
United States
7,462
284
Canada
3,817
103
United Kingdom
3,103
384
India
2,929
133
Australia
2,200
83
Germany
1,653
430
Italy
1,338
520
France
1,544
289
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Attentive | Clerk.io |
|---|---|---|
| LCP | 1.7 s | 1.7 s |
| INP | 100 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 500 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.