CAPTCHA Settings
Control Panel Location: Settings > CAPTCHA
This section of the Control Panel allows you to set the CAPTCHA preferences for your website.
Settings
Require CAPTCHA?
If you enable this preference, then site visitors will be required to pass a CAPTCHA to submit any front-end form, including Channel Form, comment forms, contact forms, and member registrations. If members are logged in, they will not have to enter a CAPTCHA unless the Require CAPTCHA while logged in? preference is enabled.
Require CAPTCHA while logged in?
If you enable this preference, then even members who are logged in will need to fill out CAPTCHA information in order to post, for example, comments (assuming you’ve enabled CAPTCHA support for comment posting). If you disable this setting, then members who are logged in will bypass the CAPTCHA check.
Use reCAPTCHA v3?
If you enable this preference then the system will use reCAPTCHA v3 in place of the built-in image based solution.
Built-in CAPTCHA Settings
Use TrueType font?
If your server supports TrueType Fonts, then you can enable this setting. If you receive errors such as Call to undefined function: imagettftext() on your site then your server does not support TrueType Fonts and you should set this to “No”.
Add random number?
Specify whether to add a random three-digit number to the end of each generated CAPTCHA word. This makes it more difficult for scripts to guess or brute-force the form submission.
CAPTCHA directory
The URL to your CAPTCHA images. In most cases, this will be similar to:
https://example.com/images/captchas////example.com/images/captchas//images/captchas/
CAPTCHA path
Here you set the server path (not the URL) to your CAPTCHA images folder. By default, it is the captchas folder inside the images folder.
The server path might look something like:
/home/example.com/public_html/images/captchas/
If you do not know what to use for your full server path, contact your Host or server admin. Remember that this upload folder must be writable. See File Permissions for details.
reCAPTCHA v3 Settings
If you wish to use (Google reCAPTCHA v3)[https://cloud.google.com/security/products/recaptcha#how-it-works] as a replacement for the built-in functionality, you will need to ensure that the site is set up with Google with the required site key and secret. Note that there is currently a monthly limit on the number of free CAPTCHAs that Google provides. See https://www.google.com/recaptcha/admin/create
reCAPTCHA site key
Enter your site key here
reCAPTCHA site secret
Enter your site secret here
Threshold score
Enter the minimum score to pass the CAPTCHA test (a number between 0.1 and 1.0). The default is 0.5