Description
CF7 Math Captcha is a lightweight plugin that adds a math captcha field to your Contact Form 7 forms.
It helps reduce spam without using Google reCAPTCHA.
Very simple to use: just add [mathcaptcha* captcha-field] to your Contact Form 7 form.
Screenshots
Example captcha field in a Contact Form 7 form. 
Installation
- Upload the plugin folder to the
/wp-content/plugins/directory or install it directly from the WordPress plugin repository. - Activate the plugin through the ‘Plugins’ menu in WordPress.
- Edit your Contact Form 7 form and add:
[mathcaptcha* captcha-field]
FAQ
-
Does it work without Contact Form 7?
-
No. This plugin requires Contact Form 7 to be installed and active.
-
Can I change the math operations?
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Right now, it supports addition only (e.g., 3 + 5 = ?). More options may come in future versions.
Reviews
Hedra 12, 2025
1 reply
Nice, clean and lightweight solution for adding Math Captcha to Contact Form 7. Works smoothly and keeps spam away without extra hassle. Good job, bro! 👏
Hedra 12, 2025
1 reply
Installed and configured in under 5 minutes. Spam dropped to zero. The refresh captcha feature is a nice touch. Definitely worth it!
Contributors & Developers
“Math Captcha for Contact Form 7” is open source software. The following people have contributed to this plugin.
Contributors
Translate “Math Captcha for Contact Form 7” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
1.0.1
- Removed deprecated
load_plugin_textdomain()call. - Updated
Tested up toto 6.8. - Minor code cleanup.
1.0.0
- Initial release.
1.0.2
- Update Plugin Icon
1.0.3
- Update Plugin Infomation