Invisible reCaptcha for WordPress plugin helps you to protect your sites against bad spam bots using the new Invisible reCaptcha by Google.

Invisible reCaptcha for WordPress

Invisible reCaptcha for WordPress is an extremely powerful plugin which integrates the new <a href="https://www.google.com/recaptcha/intro/invisible.html" rel="nofollow ugc">Invisible reCaptcha by Google</a> with your WordPress site.
<h4>Summary of features</h4>
WordPress Invisible reCaptcha
<pre><code>- Login form protection - annihilates Brute Force attacks
- Registration form protection
- Comments form protection
- Forgot Password form protection
</code></pre>
WooCommerce Invisible reCaptcha
<pre><code>- Login form protection
- Registration form protection
- Product Review form protection
- Lost Password form protection
- Reset Password form protection
</code></pre>
Contact Form 7 Invisible reCaptcha 
 &#8211; Protect your Contact Form 7 forms with Invisible reCaptcha
Gravity Forms Invisible reCaptcha 
 &#8211; Protect your Gravity Forms with Invisible reCaptcha
<a href="https://wordpress.org/plugins/ultra-community/" rel="ugc">Ultra Community</a> Invisible reCaptcha 
 &#8211; Login form protection 
 &#8211; Registration form protection
BuddyPress Invisible reCaptcha 
 &#8211; Protect your BuddyPress registration form with Invisible reCaptcha
<h4>Compatibility</h4>
On a WP Multisite you can either activate the plugin network wide or on a single site.
<h4>How-To and Troubleshooting</h4>
Check out our <a href="https://ultracommunity.com/forums/forum/invisible-recaptcha/" rel="nofollow ugc">Invisible reCaptcha for WordPress Support Forum</a>
<h4>Extending Invisible reCaptcha</h4>
Here are some useful hooks to help developers integrate Invisible reCaptcha with any plugin or custom form
Actions
<pre><code>- google_invre_render_widget_action - renders the recaptcha widget
</code></pre>
Filters
<pre><code>- google_invre_is_valid_request_filter - used to check if Google approved the request (returns bool true/false)
- google_invre_widget_output_html_filter - used to change the recaptcha widget output
- google_invre_language_code_filter - used to change the badge/challenge language code
- google_invre_badge_position_filter - used to change the badge position (possible returning values are: 'bottomright', 'bottomleft', 'inline')
</code></pre>
<blockquote>
Examples of using Invisible reCaptcha hooks
</blockquote>
<ul>
<li>
Add Invisible reCaptcha into any form
Just call 
do_action(&#8216;google_invre_render_widget_action&#8217;); 
anywhere before form closing tag
</li>
<li>
Validate form post request
$is_valid = apply_filters(&#8216;google_invre_is_valid_request_filter&#8217;, true); 
if( ! $is_valid ) 
{ 
 // handle error here 
} 
else 
{ 
 // continue with your logic 
}
</li>
<li>
Change the badge/challenge language code
add_filter( &#8216;google_invre_language_code_filter&#8217;, &#8216;myprefix_change_recaptcha_language&#8217; ); 
function myprefix_change_recaptcha_language($language_code){ 
 $language_code = &#8216;fr&#8217;; // French 
 return $language_code; 
}
</li>
</ul>
See all <a href="https://developers.google.com/recaptcha/docs/language" rel="nofollow ugc">reCaptcha Language Codes</a>
<blockquote>
Note: This plugin requires PHP 5.3 or higher to be activated.
</blockquote>

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