Choosing the type of reCAPTCHA

There are four types of reCAPTCHA to choose from when creating a new site.

reCAPTCHA v2

reCAPTCHA v2 requires the user to click a checkbox indicating the user is not a robot. This will either pass the user immediately (with No CAPTCHA) or challenge them to validate whether or not they are human. This is the simplest option to integrate with and only requires two lines of HTML to render the checkbox.

reCAPTCHA v3

reCAPTCHA v3 allows you to verify if an interaction is legitimate without any user interaction. It is a purely JavaScript API returns a score giving the you the ability to take action in the context of your site: for instance requiring additional factors of authentication, sending a post to moderation, or throttling bots that may be scraping content.

Invisible reCAPTCHA

The second option 'Invisible reCAPTCHA' does not require the user to click on a checkbox, instead it is invoked directly when the user clicks on an existing button on your site or can be invoked via a JavaScript API call. The integration requires a JavaScript callback when reCAPTCHA verification is complete. By default only the most suspicious traffic will be prompted to solve a captcha. To alter this behavior edit your site security preference under advanced settings.

reCAPTCHA Android

The reCAPTCHA Android library is part of the Google Play services SafetyNet APIs. This library provides native Android APIs that you can integrate directly into an app. You should set up Google Play services in your app and connect to the GoogleApiClient before invoking the reCAPTCHA API. This will either pass the user through immediately (without a CAPTCHA prompt) or challenge them to validate whether they are human.

reCAPTCHA V1 - Shut down

reCAPTCHA V1 has been shut down since March 2018. Please use an option above.