Jetpack vs Really Simple CAPTCHA
Head-to-head usage across the sites we track.
Top sites by authority
Jetpack · Really Simple CAPTCHA · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Jetpack · Really Simple CAPTCHA · share of sites in each country using one or the other
United States
56,925
8
India
18,337
2
United Kingdom
16,888
2
Japan
15,245
2
France
14,004
5
Canada
11,584
2
Italy
11,467
4
Germany
11,081
10
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Jetpack | Really Simple CAPTCHA |
|---|---|---|
| LCP | 2.4 s | 2.1 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 1400 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Really Simple CAPTCHA to Jetpack
| Domain | When |
|---|---|
| steadfasttraining.co.uk | Dec 2025 |