Google reCAPTCHA v3 is a free service that protects your site from spam and abuse. It uses advanced risk analysis techniques to tell humans and bots apart.
For more info please check the plugin's documentation.
Usage
Google reCAPTCHA v3 requires to include below Google Recaptcha API Javascript file on your page:
grecaptcha.ready(function () {
if (grecaptcha.getResponse() === "") {
alert("Please validate the Google reCaptcha.");
} else {
alert("Successful validation! Now you can submit this form to your server side processing.");
}
});