Description
Mathematical Captcha Applier is a lightweight WordPress plugin that lets you easily apply a simple math-based captcha to form submit buttons on your website by specifying their CSS selector. Just provide a specific button’s CSS selector, and the plugin will display a captcha prompt before the action is completed. This could help to prevent spam and unwanted bot activity.
Features:
– Add a mathematical captcha to form submit buttons (<input type="submit"> or <button type="submit">) by specifying their CSS selector (ID or class).
– Attempts to protect forms from automated submissions.
– No external dependencies — lightweight and fast.
– Simple configuration via the WordPress dashboard.
– If JavaScript is disabled, this plugin will hide the selected buttons.
How It Works:
When a user clicks the protected button, a small popup will appear asking them to solve a basic math problem (e.g., 5 + 3 = ?). If answered correctly, the action will proceed.
If JavaScript is disabled in the browser, the plugin hides the selected submit button.
Installation
- Upload the plugin files to the
/wp-content/plugins/mathematical-captcha-applierdirectory, or install the plugin through the WordPress Plugins screen. - Activate the plugin through the Plugins screen in WordPress.
- Go to Settings > Mathematical Captcha Applier to configure the buttons you want to protect.
FAQ
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Does this work with all forms?
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Yes, as long as the submit button is either
<input type="submit">or<button type="submit">and you specify its unique class or ID as the selector. -
Yes, you can specify multiple selectors in the settings.
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Does it require JavaScript?
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Yes, the captcha popup and validation rely on JavaScript.
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Is this plugin designed to handle all kinds of spamming threats?
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No. This plugin is not designed to handle all types of spamming threats. It attempts to stop spamming attempts by using a CSS and JS based method.
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No. Only specific selectors based on ID or class are allowed. Global selectors like
input[type="submit"]andbutton[type="submit"]are blocked.
Reviews
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Contributors & Developers
“Mathematical Captcha Applier” is open source software. The following people have contributed to this plugin.
Contributors
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Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
1.0
- Initial release