Really Simple SSL & Security vs Slider Captcha
Head-to-head usage across the sites we track.
Top sites by authority
Really Simple SSL & Security · Slider Captcha · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
27
1
Open Page Rank 8+
437
4
Open Page Rank 7+
1,413
11
Open Page Rank 6+
2,929
25
Open Page Rank 5+
5,958
37
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Really Simple SSL & Security · Slider Captcha · share of sites in each country using one or the other
United States
97,418
120
Brazil
48,788
41
Spain
47,706
69
Japan
42,353
59
France
40,734
65
Italy
36,640
43
United Kingdom
35,181
78
Germany
32,992
64
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Really Simple SSL & Security | Slider Captcha |
|---|---|---|
| LCP | 2.4 s | 2.2 s |
| INP | 50 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 1300 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.
All Really Simple SSL & Security sites · All Slider Captcha sites