The CAPTCHA question type helps protect your survey from spam and automated submissions by verifying that a real human is filling out the form.

Checkbox allows you to choose between two CAPTCHA options:

• Visible CAPTCHA
• Invisible CAPTCHA
  
  

Visible CAPTCHA

Visible CAPTCHA prompts the respondent with a verification task, such as:

• Clicking a checkbox (e.g., "I'm not a robot")
• Selecting images (depending on the CAPTCHA provider)
  
  

This is a familiar and effective way to prevent bots from submitting responses. It's suitable when:

• You want to clearly signal that the form is protected
• You’re dealing with higher-risk audiences or spam-prone traffic
  
  

Invisible CAPTCHA

Invisible CAPTCHA works behind the scenes. It doesn’t display a visible challenge unless the system detects suspicious or automated behavior.

It is ideal when:

• You want a seamless user experience
• You don’t want to interrupt the respondent’s flow
• You still need reliable spam protection

In most cases, the respondent won’t see or interact with the CAPTCHA unless flagged.

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How to Add a CAPTCHA Question

1. Open your survey and go to the Edit tab.
2. Click Add Question.
3. From the dropdown, select CAPTCHA.
4. Choose your preferred CAPTCHA type:
   
   • Visible
   • Invisible
5. Select the size and theme of the captcha button if you picked Visible captcha
6. Save your question.

Our Recommendation

• Use Visible CAPTCHA if you frequently receive spam or want a visual deterrent.
• Use Invisible CAPTCHA to maintain a smooth experience while still securing your form.
• Don’t overuse CAPTCHA—only include it if you’re seeing spam or bot issues.

Conditions

This section of the question allows you to manage the conditional appearance of the question based on either a previous response, a contact attribute or a response property. You can combine 2 or more conditions using “OR/ AND” conditions by clicking on them. Please refer to our “Quick Start: Add a Condition to a Question”.

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Responses and Reports

The CAPTCHA is simply a mechanism used to verify that the user is a real person. The system does not store any details against it so it does not relect any data in Responses or Reports.