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Simple Login Captcha

by Nikolay Nikolov on WordPress.org

Adds a simple 3-digit number captcha on the login form.

(17)
WordPress login form with the simple captcha

WordPress login form with the simple captcha

A simple captcha for the WordPress login form. To be able to login, the user is required to enter a random 3-digit number in a text field.

The correct number is displayed above the field by a small JavaScript code. Compatible with the WooCommerce login form. Compatible with multisite.

Demo

https://nikolaydev.com/wp-login.php

Simple

  • No complicated features
  • No settings
  • No image generation
  • No API
  • No sessions
  • No cookies
  • No IP address detection
  • No personal data collection
  • No vulnerabilities in the programming code

Recommendation

Bots can also try to login with the XML-RPC feature of WordPress! Very rarely plugins also need this (like the Jetpack plugin). But if you don’t use it, I recommend that you disable it. You can use the super simple one-line plugin Disable XML-RPC.

Notice

This is a simple plugin designed to protect against random bots that try to login on your site. But if a person actually looks at the code of this plugin and specifically designs a new bot that targets this plugin, this bot would be able to bypass the protection.

Active installations10K+
Weekly downloads
111-25.50%
Version1.3.6
Last updated12/4/2025
WordPress version3.5
Tested up to6.8.1
PHP version5.2
Tags
captchaloginsecuritysimplespam