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This extension is in our Payment category. Please remember that it is the merchant’s responsibility to ensure the proper PCI compliance level of their store, as applicable by PCI regulations. The PCI Self-Assessment is one tool you can use when evaluating Payment extensions and how they may affect your PCI compliance level. For more information on Marketplace policies, please review the Marketplace Terms & Conditions.
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Altcha CAPTCHA

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Trader Information

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Overview

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Magento's built-in CAPTCHA often frustrates users with hard-to-read images, while external solutions like reCAPTCHA raise privacy concerns and require third-party cookies.

With the Altcha CAPTCHA extension, you can now protect your Magento 2 store with a modern, privacy-focused, and frictionless proof-of-work CAPTCHA!

This extension integrates seamlessly with Magento's native CAPTCHA module. It offers to replace the traditional image-based CAPTCHA with a self-hosted, "invisible" challenge that the user's browser solves automatically. No cookies, no tracking, and no external requests are required to protect your store from bots.

 Features

  • Privacy-Focused Protection: This module leverages the Altcha proof-of-work mechanism that doesn't track users or use cookies, making it fully GDPR-compliant.
  • Native Integration: Complements the standard Magento CAPTCHA in both frontend and admin backend forms.
  • Support for All Standard Forms: Enable it for Customer Login, Forgot Password, Create Account, Contact Us, and Admin Login.
  • Replay Attack Protection: Includes a built-in mechanism to track and invalidate solved challenges, preventing bots from reusing solutions.
  • Frictionless UX: The challenge is solved in the background by the visitor's browser, often without any manual interaction required from the user.
  • Self-Hosted & Secure: Everything is handled within your Magento installation using the official Altcha PHP library.

 Benefits & Use Cases

  • Enhance User Experience: Say goodbye to annoying "type the characters you see" images. Your customers will appreciate the smooth, modern interface.
  • Improve Privacy Compliance: Avoid the legal complexities of third-party CAPTCHA providers. Since Altcha doesn't track users, it's a perfect fit for privacy-conscious merchants.
  • Stop Automated Attacks: Effectively block brute-force login attempts and spam registrations without penalizing real human users.
  • Universal Protection: Protect both your storefront and your Magento Admin Panel with the same secure technology.

Support

If you have questions, found a bug, or need further information about this extension, do not hesitate to contact us via our support email address.

Technical Specifications

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Seller profile

Steffen Rieke

Seller contact

E-mail

Current Version

1.0.0

Adobe Commerce platform compatibility

Magento Open Source: 2.4 (current)

Type

Stable Build

Updated

06 July, 2026

Categories

Extensions, Payments & Security

Quality Report

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Installation & Varnish Tests

Passed

Coding Standard

Passed

Plagiarism Check

Passed

Malware Check

Passed

Marketing Review

Passed

Manual Testing

Passed

All tests were conducted on the latest versions of Adobe Commerce that existed for the compatible release lines at the moment of the extension submission. Latest versions of all other software were used, as applicable.

Release Notes

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1.0.0:

  • Compatible with Magento Open Source : 2.4
  • Stability: Stable Build
  • Description:

    Initial release.

Support

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The best place to start if you need help with a specific extension is to contact the developer. All Adobe Commerce developers have both a contact email and a support email listed.

Contact Vendor

Q & A

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Reviews

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