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NEW! With support for Elementor Form Widget.
Eazy C(omment)F(orm) Captcha adds a mathematic exercise to the comment form, contact form 7 & elementor, preventing bots to spam your comments and forms. Now with Elementor & Contact Form 7 support!
You can easily customize the label text for the captcha in the backend of WordPress. Also you can change the HTML Markup if you like.
With support for Contact Form 7.

Eazy CF Captcha

Eazy C(omment)F(orm) Captcha adds a mathematic exercise to the comment form, contact form 7 & elementor, preventing bots to spam your comments and …

WP Sites - Brad Dalton

Note: Requires WordPress 3.6 or higher
This plugin simply removes:
<ol>
<li>The Website URL Field From All Comment Forms.</li>
<li>ALL Comment Form Allowed Tags Which Attract Automated Comment Form Spam.</li>
<li>The ‘Your email address will not be published’ text which also attracts comment form bots because it includes the text ’email’.</li>
</ol>
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Learn more about <a href="http://wpsites.net/wordpress-admin/how-to-remove-comment-form-allowed-tags/" rel="nofollow ugc">how to remove comment form allowed tags</a>

Stop Comment Form Spam

New WordPress 3.6 or higher plugin which removes the website url field and comment form allowed tags which attract automated comment spam.

Eazy CF Captcha vs Stop Comment Form Spam