A CAPTCHA is a type of challenge-response test used in computing to determine whether or not the user is human. CAPTCHAs are often used on websites to prevent spam and automated bots from submitting forms and making fake accounts.
WordPress offers various CAPTCHA plugins that can be added to forms to ensure that the submissions are made by humans. Some of the popular WordPress CAPTCHA plugins are:
- Google reCAPTCHA – This plugin is widely used and offers different types of CAPTCHAs, including the image-based CAPTCHA, the invisible CAPTCHA, and the reCAPTCHA v3.
- Really Simple CAPTCHA – This plugin is easy to use and generates CAPTCHA images with random numbers and letters.
- hCaptcha – This plugin is an alternative to Google reCAPTCHA and offers a user-friendly CAPTCHA that verifies the user’s humanity without sacrificing their privacy.
To add a CAPTCHA to a WordPress form, you need to install and activate a CAPTCHA plugin of your choice, and then configure it according to the plugin’s instructions. Most CAPTCHA plugins have options to add CAPTCHA to various forms, including login forms, registration forms, comment forms, and contact forms.