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Anti-Spam Math Question

AddonLogic Anti-Spam Math Question

About this Plugin

Appends a simple arithmetic question (e.g. "What is 7 + 3?") to the WordPress comment form. The expected answer is hashed server-side using the site URL and the current hour — no database writes, no sessions, no cookies. Wrong answers are rejected with a 403 response. The CAPTCHA is invisible to logged-in users by default.

Plugin Details

Category Admin
Author Snehal Pancholi — Freelance Developer
Plugin Page https://addonlogic.com/anti-spam-math-question
Requires WordPress 6.0+, PHP 8.1+
License GPL-2.0+

Installation

  1. Download the plugin ZIP file using the button on this page.
  2. Go to WordPress Admin → Plugins → Add New.
  3. Click Upload Plugin and select the downloaded ZIP.
  4. Click Install Now then Activate Plugin.