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+
26
0
Open Page Rank 8+
334
0
Open Page Rank 7+
1,421
1
Open Page Rank 6+
3,190
1
Open Page Rank 5+
6,595
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
112,652
8
India
69,474
2
Germany
49,126
10
United Kingdom
38,904
2
Spain
36,292
6
France
34,405
5
Brazil
33,148
1
Italy
31,059
4
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 | 2.1 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 1300 ms | 1100 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.