RankMath SEO vs Really Simple CAPTCHA
Head-to-head usage across the sites we track.
Top sites by authority
RankMath SEO · Really Simple CAPTCHA · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
25
0
Open Page Rank 8+
331
0
Open Page Rank 7+
1,440
1
Open Page Rank 6+
3,198
1
Open Page Rank 5+
6,603
2
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
RankMath SEO · Really Simple CAPTCHA · share of sites in each country using one or the other
United States
109,603
5
India
68,337
4
Germany
48,243
11
Spain
38,558
7
United Kingdom
38,357
3
France
33,928
4
Brazil
32,196
3
Italy
32,163
3
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | RankMath SEO | Really Simple CAPTCHA |
|---|---|---|
| LCP | 2.3 s | 2.4 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 1300 ms | 1100 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.