ALTCHA Spam Protection

ALTCHA provides a free, open-source Captcha alternative utilizing a proof-of-work mechanism to safeguard your website against spam and unwanted content. Our anti-spam solution ensures robust spam protection without compromising user privacy. Unlike other solutions, ALTCHA is free, open-source, and self-hosted. It operates independently without external services, avoids the use of cookies and fingerprinting, refrains from user tracking, and maintains full compliance with GDPR regulations.

Download, install and activate ALTCHA Spam Protection. To use the Spam Filter, create an API Key and configure it in the Settings. Alternatively, install the plugin manually:

1. Download the .zip from the Releases.
2. Upload altcha folder to the /wp-content/plugins/ directory
3. Activate the plugin through the 'Plugins' menu in WordPress
4. Review the settings and enable the your integrations

1.12.0

• HTML Forms - skip verification if the shortcode is not in the form markup [#23]

1.11.1

• Fix Forminator compatibility issue

1.11.0

• Added support for WP-Members

1.10.0

• Added support for WPDiscuz

1.9.3

• Fix REST API Cache-Control header

1.9.2

• Enable Custom HTML (shortcode) integration by default when activated

1.9.1

• PHP 7 support (replace str_contains by strpos) [#19]

1.9.0

• Widget updated to version 1.0.0
• CF7 - fix widget placement
• Fix page caching

1.8.0

• Shortcode (custom integration) - fix mode (SpamFilter)

1.7.0

• HTML Forms - add Shortcode option

1.6.1

• Fix WordPress login integration

1.6.0

• Fix Elementor Pro Forms widget rendering
• Fix Contact Form 7 widget position and shortcode support

1.5.0

• Fix REST base URL (+ REST prefix removed from settings) [#13]

1.4.0

• Support for Elementor Pro Forms
• Widget updated to 0.6.7

1.3.1

• Fix site_url parsing issue [#11]

1.3.0

• Added support for custom REST API prefixes

1.2.0

• Forminator - fix widget rendering with file input
• Widget updated to 0.6.4

1.1.0

• Shortcode - support for language attribute

1.0.0

• Widget updated to 0.6.3

0.3.0

• Added nonce sanitization
• Removed server-side spam filter (required for Plugin Directory)

0.2.1

• Fixes requested by Plugin Directory review
• Fixed various Spam Filter issues

0.2.0

• Widget updated to 0.6.0
• Added support for Floating UI

0.1.7

• Fix Forminator multi-step forms

0.1.6

• Widget updated to 0.5.1

0.1.5

• Fixes requested by Plugin Directory review

0.1.4

• GravityForms - added label and description options
• Altcha widget updated to 0.4.3

0.1.3

• Fixed "lost password" verification bug
• Altcha widget updated to 0.4.1

0.1.2

• Fixed widgets footer link and log warnings

0.1.1

• Widget v0.4.0
• Challenge expiration

0.1.0

• First version