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+
26
1
Open Page Rank 8+
424
2
Open Page Rank 7+
1,350
9
Open Page Rank 6+
2,786
22
Open Page Rank 5+
5,696
36
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
83,739
98
Brazil
43,852
33
Spain
40,106
60
Japan
36,223
48
France
32,992
49
Italy
30,741
37
United Kingdom
29,953
66
Germany
28,990
52
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 | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 1300 ms | 750 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.
All Really Simple SSL & Security sites · All Slider Captcha sites