tapcha

<p>Adds a tapcha form tag to Contact Form 7. You can use it by adding [tapcha* name] to your form in Contact Form 7.<br />
This plugin makes use of the API from tapcha.co.uk to generate Tapcha challenges and to check whether the response is correct.</p>
<h3>Tapcha API</h3>
<p>This plugin will make requests to our API hosted at api.tapcha.co.uk. A request will be made to it in the following circumstances:<br />
– When a short code / form tag is used, a request will be made to generate the challenge to display on page load<br />
– When users respond to a challenge, a request is made to the API to verify whether the response is correct<br />
– If you have entered an admin key in the settings page, a request will be made to gather statistics that will be shown below</p>
<p>For more information please read our:<br />
– Terms of service at http://tapcha.co.uk/terms-of-service<br />
– Privacy policy at http://tapcha.co.uk/privacy-policy</p>


Tapcha

A gesture based CAPTCHA scheme. Integrates with Contact Form 7

Suraj Kumar Sinha

<p><strong>ZigZag Image Captcha for Contact Form 7</strong> adds a powerful, image-based captcha to <strong>Contact Form 7</strong>.</p>
<p>This plugin generates a secure <em>zig-zag distorted image captcha</em> with background noise, dots, lines, and randomized angles to prevent automated bots.</p>
<p>It works <strong>100% with AJAX</strong>, supports auto-refresh, expiration timer, session validation, and displays CF7 native error messages.</p>
<h3>🔒 Features</h3>
<ul>
<li>Secure zig-zag distorted captcha  </li>
<li>Random characters with noise, distortion, and angled letters  </li>
<li>Auto image refresh with single click  </li>
<li>Session-based secure validation  </li>
<li>Expiration timer with auto-regeneration  </li>
<li>Native CF7 error messages (not custom overrides)  </li>
<li>Works with both AJAX and non-AJAX submissions  </li>
<li>Lightweight and optimized  </li>
<li>No external API required  </li>
<li>Fully responsive  </li>
</ul>
<h3>🛠 How to Use</h3>
<p>Add this shortcode inside any Contact Form 7 form:[imagecaptcha* cf7_image_captcha]</p>


ZigZag Image Captcha for Contact Form 7

Adds a secure, flexible image captcha field to Contact Form 7 with zig-zag protection, timer, refresh, AJAX validation, and accessibility support.

Tapcha vs ZigZag Image Captcha for Contact Form 7