Mighty-CAPTCHA add an authentication with Google reCAPTCHA technology to login, comment, and register form, with API keys which delivered by Google.
As of April 2026, Mighty CAPTCHA is a WordPress spam plugin with 30 active installations and a 0/5 rating0. It has been downloaded 2.4K+ times in total. Requires WordPress 4.3.1+ and PHP false+. Available on WordPress.org since 2015. Last updated 10 years ago — may have compatibility concerns. Top alternative: Akismet Anti-spam: Spam Protection.
This plugin will add some reCAPTCHA widget to login form, comment form, and user registration form. With this plugin, sites owners can avoid spam comment, user registration, and biting password.
Mighty CAPTCHA uses a Google reCAPTCHA technology. To work, API key pair, issued Google, is necessary.
For more information about key pair, please refer https://www.google.com/recaptcha/intro/index.html .
You can choose which form will be with reCAPTCHA widget or not. For login form and user registration form, a normal size widget is too wide. So you can choose compact widget. (but I do not like it.)
Below is characteristic of new Google reCAPTCHA.
| WordPress | 4.3.1+ requiredTested up to 4.3.34 |
| PHP | false+ required |
*First release version.
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.