Google reCAPTCHA

Google reCAPTCHA v3 protects the Nexgen contact form from spam and abuse — invisibly, without making your visitors solve puzzles. Setting it up is a matter of registering your site and copying two keys into the right files.

Use v3, not v2

Nexgen is built for reCAPTCHA v3. The older v2 (“I’m not a robot” checkbox) is not compatible and will stop the form from working.

Register your site

1. Go to the reCAPTCHA admin console.

   Open google.com/recaptcha/admin/create and sign in with your Google account.

2. Fill in the registration form:

   • Label — a name to identify this site later (e.g. your domain name).
   • reCAPTCHA type — choose reCAPTCHA v3. Required
   • Domains — add your website’s address.
   • Owners — your email address is added automatically.

3. Accept the terms and submit.

   Google generates two keys for you: a Site Key and a Secret Key.

Add your keys

You now have two keys, and each goes in a different place:

1. Secret Key → assets/php/recaptcha.php.

   Open the file and paste your Secret Key where indicated. This is what lets your server verify each submission with Google.

2. Site Key → your HTML and assets/js/main.js.

   Paste your Site Key into the HTML pages that contain the form and into main.js where indicated. This is the public key that runs in the visitor’s browser.

Verify it's working

Load your contact page and open your browser’s developer tools with F12. With reCAPTCHA active you’ll see the reCAPTCHA badge and no key errors in the console. Google’s DevTools guide is handy if you’re new to inspecting a page.

Back to Forms & PHPReview the form.php mailer setup that pairs with reCAPTCHA.