Self-hosted Slider CAPTCHA 2.0

Zechariah · Thursday at 11:31 PM

The Self-hosted Slider CAPTCHA has been submitted and is now available for free download. Big thanks to the contribution from our member @Zechariah !

A lightweight, fully self-hosted CAPTCHA solution for WordPress that requires **no external services, no AI, and no API keys**. It protects your site against automated bot submissions using three complementary mechanisms:

1. **Slider CAPTCHA** — The user drags a handle to a randomly positioned target zone. A server-side token confirms the action was performed legitimately.
2. **Proof of Work (PoW)** — The browser silently solves a SHA-256 hash puzzle in the background while the user...