General Settings | Spam Control - Zoho Forms

Overview

Overview

When you share a form publicly, there is a possibility of receiving spam entries in your form. To prevent spam entries, Zoho Forms provides an option to include a CAPTCHA in your form. CAPTCHA stands for Completely Automated Public Turing Test to Distinguish Between Computers and Humans . It's a common way to ensure that your form interacts with a human rather than a computer bot. Enabling captcha validation on your form can help you validate respondents by challenging them to enter a response before they submit a form and keeping the irrelevant data at bay. You can use the default CAPTCHA available in Zoho Forms or integrate with other available services to protect your forms online.
captcha

Spam and Bot Protection Services

You can select a bot protection services from the following options:
  1. Zoho Forms CAPTCHA
  2. Google reCAPTCHA 
    1. reCAPTCHA v2 ("I'm not a robot" checkbox)
    2. reCAPTCHA v2 (Invisible reCAPTCHA badge)
    3. reCAPTCHA v3 (Score based)
  3. Cloudflare Turnstile

Zoho Forms CAPTCHA   

Zoho Forms CAPTCHA is a simple security check that ensures only human users can submit the form by preventing bot access. It CAPTCHA displays a sequence of intentionally distorted alphanumeric characters in an image. Bots struggle to interpret this warped text, but a human can usually read it and type the correct sequence into the field to pass the check. If the characters don't match, the user is prompted to try again, effectively blocking the bot from submitting the form. Learn how to configure Zoho Forms CAPTCHA.

Google reCAPTCHA  

Google reCAPTCHA is a robust security service that protects your forms from bots and spam. It functions by differentiating human users from automated software. By integrating Google reCAPTCHA, you ensure a strong defense for your forms, helping to maintain data integrity and prevent malicious bot activity without creating unnecessary friction for legitimate users. Learn more about Google reCAPTCHA versions and their configurations.

Cloudflare Turnstile

Cloudflare Turnstile is an advanced human-verification service designed to protect forms from spam and bots without requiring users to solve a challenge. Unlike traditional CAPTCHAs that present puzzles, Cloudflare instructs the browser to perform a series of checks that help confirm the visitor's legitimacy. Learn more about its widget modes and configuration.

Refer to the FAQs on CAPTCHA.