checkify

<p>Checkify helps WordPress site owners reduce CAPTCHA friction by using privacy-first human verification.</p>
<p>Instead of asking visitors to solve puzzles, Checkify lets visitors complete a verification flow and return a verification result to the WordPress site. This can be used on pages, forms, or custom flows where the site owner wants to request human verification or age verification.</p>
<p>Checkify is designed around privacy-first verification. The WordPress site receives a verification result, not unnecessary personal identity data.</p>
<h4>Features</h4>
<ul>
<li>CAPTCHA alternative for WordPress</li>
<li>Privacy-first human verification</li>
<li>Age verification profiles (18+, 21+, 25+)</li>
<li>Site connection using a QR code</li>
<li>Local QR rendering in the browser</li>
<li>Shortcode support using [checkify_verify]</li>
<li>Live Checkify API integration</li>
<li>No external QR code generation service</li>
</ul>
<h4>How it works</h4>
<ol>
<li>Install and activate the Checkify plugin.</li>
<li>Open the Checkify settings page in WordPress.</li>
<li>Generate a connection QR code.</li>
<li>Scan the QR code in the Checkify app to connect your WordPress site.</li>
<li>Copy your Checkify Pass ID and paste it into the plugin settings.</li>
<li>Add [checkify_verify] to the page where you want to show human verification.</li>
</ol>
<p>The shortcode creates a verification request, renders a QR code locally in the visitor’s browser, polls for verification status, and stores a temporary local verification result for that visitor.</p>
<h3>External services</h3>
<p>This plugin connects to Checkify services to provide human verification.</p>
<p>Service used:</p>
<ul>
<li>Checkify API: https://checkify.me</li>
<li>Checkify website: https://checkify.me</li>
</ul>
<p>The plugin connects to Checkify when:</p>
<ul>
<li>A site administrator creates a site connection claim.</li>
<li>A site administrator polls the status of a site connection claim.</li>
<li>A connected WordPress site creates a verification request.</li>
<li>A connected WordPress site checks the status of a verification request.</li>
<li>A connected WordPress site confirms a completed verification result.</li>
</ul>
<p>The plugin may send the following data to Checkify services:</p>
<ul>
<li>The WordPress site domain.</li>
<li>A Checkify site identifier.</li>
<li>A Checkify installation identifier.</li>
<li>A Checkify Pass identifier configured by the site administrator.</li>
<li>Verification request identifiers.</li>
<li>Verification status tokens.</li>
<li>Request timestamps.</li>
<li>Cryptographic signatures used to authenticate the WordPress installation.</li>
</ul>
<p>The plugin does not use an external QR code generation service. QR codes are generated locally in the visitor’s browser using the bundled QRCode.js library.</p>
<p>Checkify privacy policy: https://checkify.me/privacy-policy</p>
<p>Checkify terms: https://checkify.me/terms_and_conditions</p>
<h3>Third-party libraries</h3>
<p>This plugin includes QRCode.js by davidshimjs to render QR codes locally in the browser.</p>
<p>Library: QRCode.js</p>
<p>Source: https://github.com/davidshimjs/qrcodejs</p>
<p>License: MIT</p>
<p>The QRCode.js license is included in <code>qrcode-license.txt</code>.</p>


Checkify

Replace CAPTCHA with privacy-first human verification from Checkify.

Freemius

Melapress

WPWhiteSecurity

WPKube

<h4>IMPORTANT NOTICE</h4>
<p>CAPTCHA 4WP has been acquired by WPKube. <a href="https://melapress.com/captcha-4-wp-plugin-acquired-by-wpkube/" rel="nofollow ugc">Read the announcement</a> for more information.<br />
We, at Melapress, would like to take this opportunity to thank everyone who has used and supported CAPTCHA 4WP.</p>
<h3>A free and easy-to-use CAPTCHA plugin for WordPress</h3>
<p>Protect your WordPress forms and login pages from spam and automated attacks with <a href="https://captcha4wp.com/" rel="nofollow ugc">CAPTCHA 4WP</a>. Choose from multiple ReCAPTCHA versions and strike the right balance between security and user experience.</p>
<p><a href="https://captcha4wp.com/features/" rel="nofollow ugc">Features</a> | <a href="https://captcha4wp.com/pricing/" rel="nofollow ugc">Get the Premium!</a> | <a href="https://captcha4wp.com/docs/getting-started-with-captcha-4wp/" rel="nofollow ugc">Getting Started</a></p>
<p>Use the CAPTCHA 4WP plugin to add CAPTCHA checks to WordPress forms and logins. Choose from V2 (I’m not a robot), V2 Invisible, and V3 noCAPTCHA to ensure the best user experience at all times without compromosing security. Avoid false positives falling through the crack with V3 failover to ensure humans can still pass the test even if the result comes back below the passmark.</p>
<h3>CAPTCHA 4WP key plugin features and capabilities</h3>
<ul>
<li>Add CAPTCHA to WordPress native forms such as login pages, user registration and comments forms etc</li>
<li>Supports multiple ReCAPTCHA versions</li>
<li>User-friendly wizards for easy, hassle-free setup</li>
<li>Set ReCAPTCHA V3 passmark score </li>
<li>ReCAPTCHA failover configuration (ensure no prospect is incorrectly marked as spam)</li>
<li>Plugin automatically detects visitors’ language and shows CAPTCHA in that language</li>
<li>Much more</li>
</ul>
<h3>Upgrade to CAPTCHA 4WP Premium and get even more</h3>
<p>With the premium edition of CAPTCHA 4WP, you can choose from a wider range of CAPTCHA service providers, 1-click WooCommerce and other 3rd party plugin support, whitelisting, and much more.</p>
<h3>Premium features list</h3>
<ul>
<li>Everything in the free version</li>
<li>Add CAPTCHA from hCaptcha and Cloudflare Turnstile on your websites, both free and GDPR compliant</li>
<li>Add Geoblocking on forms and WordPress comments form (block / limit form submissions or comment posting by country)</li>
<li>Customization options for the CAPTCHA checks text, visual and position on the forms</li>
<li>One-click integration with WooCommerce</li>
<li>One-click integration with Contact Form 7, Gravity Forms, WPForms, BuddyPress & other plugins</li>
<li>Much more</li>
</ul>
<p>Refer to the <a href="https://captcha4wp.com/features/" rel="nofollow ugc">CAPTCHA 4WP plugin features and benefits page</a> to learn more about the benefits of upgrading to the Premium version of CAPTCHA 4WP.</p>
<h3>Free and premium support</h3>
<p>Support for CAPTCHA 4WP is free through the WordPress support forums.</p>
<p>Premium support for paid customer support is provided via one-to-one email. Upgrade to Premium to benefit from premium support.</p>
<p>For any other queries, feedback, or if you simply want to get in touch with us, please use our <a href="https://captcha4wp.com/submit-ticket/" rel="nofollow ugc">contact form</a>.</p>
<h3>As featured on:</h3>
<ul>
<li><a href="https://www.wpbeginner.com/plugins/how-to-add-captcha-in-wordpress-login-and-registration-form/" rel="nofollow ugc">WP Beginner</a></li>
<li><a href="https://www.elegantthemes.com/blog/wordpress/wordpress-captcha" rel="nofollow ugc">Elegant Themes</a></li>
<li><a href="https://www.isitwp.com/best-wordpress-captcha-plugins/" rel="nofollow ugc">IsItWP</a></li>
<li><a href="https://wplift.com/best-wordpress-captcha-plugins" rel="nofollow ugc">WPLift</a></li>
<li><a href="https://testerwp.com/best-free-captcha-wordpress-plugins/" rel="nofollow ugc">TesterWP</a></li>
</ul>
<h3>Related links and documentation:</h3>
<p>You can find more detailed information about CAPTCHA tests and the benefits you can take advantage of, and the plugin in the links below:</p>
<ul>
<li><a href="https://captcha4wp.com/why-need-captcha-wordpress-website/" rel="nofollow ugc">Why you need CAPTCHA on your WordPress website</a></li>
<li><a href="https://captcha4wp.com/different-types-captcha-checks-wordpress/" rel="nofollow ugc">The different types of CAPTCHA for websites</a></li>
<li><a href="https://captcha4wp.com/captcha-recaptcha-nocaptcha-differences/" rel="nofollow ugc">What is the difference between CAPTCHA, ReCAPTCHA, and NoCAPTCHA?</a></li>
<li><a href="https://captcha4wp.com/docs/getting-started-with-captcha-4wp/" rel="nofollow ugc">Getting started with CAPTCHA 4WP</a></li>
<li><a href="https://captcha4wp.com/docs/how-to-add-captcha-to-woocommerce-forms/" rel="nofollow ugc">How to add CAPTCHA on WooCommerce forms</a></li>
<li><a href="https://captcha4wp.com/docs/how-to-add-captcha-on-wpforms-forms/" rel="nofollow ugc">How to add CAPTCHA on WPForms</a></li>
<li><a href="https://captcha4wp.com/docs/how-to-add-captcha-on-gravity-forms-forms/" rel="nofollow ugc">How to add CAPTCHA on Gravity Forms</a></li>
<li><a href="https://captcha4wp.com/docs/how-to-show-captcha-on-failed-logins/" rel="nofollow ugc">How to show CAPTCHA on failed logins</a></li>
<li><a href="https://captcha4wp.com/" rel="nofollow ugc">Official Melapress website</a></li>
</ul>
<h3>Installing CAPTCHA 4WP</h3>
<h3>From within WordPress</h3>
<ol>
<li>Navigate to “Plugins”page and click the “Add New” button</li>
<li>Search for “CAPTCHA 4WP”</li>
<li>Cick install and after that activate the plugin</li>
</ol>
<h3>Manually</h3>
<ol>
<li>Download the plugin from the WordPress plugins repository</li>
<li>Unzip the zip file and upload the folder to the /wp-content/plugins/ directory</li>
<li>Activate CAPTCHA 4WP through the “Plugins” menu in WordPress</li>
</ol>


CAPTCHA 4WP – Antispam CAPTCHA solution for WordPress

The plugin authors removed CF7 support for the plugin with no prior warning, so all websites that were using it for their CF7 forms broke (I had in the range of 20 websites where the form validation had been silently broken this way), so they would display a broken "[anr_nocaptcha g-recaptcha-response]" shortcode. I rarely take my time to write a review for anything, but this definitely deserved it. You should warn users so that they choose to update or not; not simply make this change and let all existing CF7 forms break. Shame on you.

The plugin authors let all their sites break


For the past week, my site has been inundated with fake account registrations. Since adding this plugin yesterday there haven't been any new ones. I'm hopeful that it won't cause any problems for students signing up for my courses.


Yay no fake registrations today!


5 stars, no notes - MU/multisite support greatly appreciated


Perfect for me and MU support

Use CAPTCHA to stop spam and allow customers & users to interact with your website easily. Block fake accounts and orders. Avoid false positives.

Checkify vs CAPTCHA 4WP – Antispam CAPTCHA solution for WordPress