ALTCHA for WordPress v2 is the professional solution for keeping your website safe from spam, bots, and abuse — without frustrating your visitors. Unlike traditional CAPTCHAs that interrupt the user experience, ALTCHA runs silently in the background, delivering invisible, privacy-first protection for all your forms.
Whether you’re running a blog, an online store, or a high-traffic business site, ALTCHA makes sure your site stays fast, secure, and compliant.
- Blocks 99% of spam & abuse before it ever reaches your site
- Invisible protection — no puzzles, no images, no interruptions
- Works everywhere — integrates with any form plugin using the Request Interceptor
- Handles heavy traffic — stay online under stress with Under Attack Mode
- Firewall & rate limiting included for abuse prevention at scale
- Privacy-first & GDPR-compliant — built with accessibility and compliance in mind
- Unlimited protection — no external services, no verification limits
ALTCHA v2 is designed for serious WordPress site owners who need reliable, production-grade security. It’s a complete protection layer that scales with your website, backed by professional support when you need it.
To get started, see the documentation.
This repository is provided under a custom proprietary license. See LICENSE.txt for more information.
Certain files, such as precompiled .min.js assets in /public/vendor/, are provided only in binary/minified form and are not source-available. They remain proprietary and may not be reverse engineered, distributed, or modified.