> ## Documentation Index
> Fetch the complete documentation index at: https://fillout.com/help/llms.txt
> Use this file to discover all available pages before exploring further.

# Add a CAPTCHA field on your form

> Require respondents to complete a CAPTCHA test to prevent spam submissions and ensure only humans submit your form.

## What CAPTCHA is

**CAPTCHA**, which stands for Completely Automated Public Turing test to tell Computers and Humans Apart, is a security feature that requires users to prove they are human, preventing automated bots from accessing or submitting information.

## How to add a CAPTCHA field

On the left-hand panel of your form, click or drag and drop `Captcha`.

<img src="https://mintcdn.com/fillout-005a867b/vXL9XRlNv0Lls7u6/images/Screenshot2025-10-02at5.37.55PM.png?fit=max&auto=format&n=vXL9XRlNv0Lls7u6&q=85&s=e65e0f2717480cf7c939ed99c2cbe081" alt="Screenshot 2025-10-02 at 5.37.55 PM.png" width="2651" height="1439" data-path="images/Screenshot2025-10-02at5.37.55PM.png" />

That's it! `Publish` and share your form. Respondents will now automatically be asked to verify themselves through this field.