SI CAPTCHA Anti-Spam WordPress Plugin
Adds CAPTCHA anti-spam methods to WordPress forms for comments, registration, lost password, login page. In order to post comments or register, users will have to type in the code shown on the image. This prevents spam from automated bots. Adds security. Works great with Akismet.
Help Keep This Plugin Free
If you find this plugin useful to you, please consider making a small donation to help contribute to my time invested and to further development. Thanks for your kind support! - Mike Challis
Features:- Configure from Admin panel
- Valid HTML
- Section 508 and WAI Accessibility Validation.
- Allows Trackback
Sites running SI CAPTCHA Anti-Spam, click to open one
Plugins with a similar footprint
Ranked by how many sites run them — a quick way to compare alternatives.
Usage of SI CAPTCHA Anti-Spam over time
June 2023 — July 2024Between June 2023 and July 2024 the number of sites running this plugin went from 4 494 to 3 808 — down 686 (-15.3%).
| Month | Sites | Change |
|---|---|---|
| July 2024 | 3 808 | -256 |
| June 2024 | 4 064 | +1 |
| May 2024 | 4 063 | +50 |
| April 2024 | 4 013 | +102 |
| March 2024 | 3 911 | -24 |
| February 2024 | 3 935 | -134 |
| January 2024 | 4 069 | -18 |
| December 2023 | 4 087 | +119 |
| November 2023 | 3 968 | +45 |
| October 2023 | 3 923 | -168 |
| September 2023 | 4 091 | -232 |
| August 2023 | 4 323 | -114 |
| July 2023 | 4 437 | -57 |
| June 2023 | 4 494 | — |
Themes used with SI CAPTCHA Anti-Spam
Detected most often on sites that run this plugin.
| # | Theme |
|---|---|
| 1 | Genesis |
| 2 | Divi |
| 3 | Avada |
| 4 | Enfold |
| 5 | Twentytwelve |
| 6 | Twentyfourteen |
| 7 | Twentyten |
| 8 | Twentyeleven |
| 9 | Newspaper |
| 10 | Canvas |
| 11 | Sahifa |
| 12 | Suffusion |
| 13 | Atahualpa |
| 14 | Snoflex |
| 15 | Twentysixteen |
| 16 | Thesis |
| 17 | Graphene |
| 18 | Twentythirteen |
| 19 | Hueman |
| 20 | Responsive |
Sites running SI CAPTCHA Anti-Spam
All sites in the collection100 examples from the collection. Open any site to see the theme and plugins we found on it.