General Settings | Spam Control - Zoho Forms

Spam Control

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. This option helps you validate if it is a human or a bot filling your form by challenging them to enter a response before they submit a form and keeping irrelevant data at bay. You can use the default CAPTCHA available in Zoho Forms or integrate with Google's reCAPTCHA services to protect your forms online.

You can select a CAPTCHA version from the following options:

Select a CAPTCHA version


Zoho Forms CAPTCHA  

This is a combination of alphanumeric characters used as a security check to ensure only human users can pass through.

  1. Go to Settings > General >Spam Control.

  2. Under Select a CAPTCHA version , select Zoho Forms CAPTCHA.

  3. Enter a CAPTCHA Label.

  4. Enter a CAPTCHA Description and click Save

    Zoho Forms CAPTCHA configuration

Google reCAPTCHA v2  

To prevent spam and bot entries on your form, you can integrate with Google's reCAPTCHA services. To set this up for your form, you will require a set of API key pair. You can choose from the following Google ReCAPTCHA options:

  • reCAPTCHA v2 ("I'm not a robot" checkbox)

  • reCAPTCHA v2 (Invisible reCAPTCHA badge)

Note: You will require separate and unique API key pairs for both the above options.

 reCAPTCHA API Keys  

To obtain a set of API key pair consisting of a Site Key and a Secret Key from Google,

  1. Login to your Google account. 
  2. Register your site details.
  3. Enter a Label to identify the site.
  4. Choose reCAPTCHA v2 under ReCAPTCHA type
  5. Under Domains, add forms.zoho.com and forms.zohopublic.com by clicking the icon.
  6. Accept the reCAPTCHA Terms of Service and click Submit to generate the API key pair.

Note: 

  • If you are using a custom domain, you must add that domain on your list of domains. eg: forms.zylker.com
  • If you are accessing Zoho Forms from forms.zoho.eu, then map your domain or sub-domain to the Hostname forms.cs.zohohost.eu
  • If you are accessing Zoho Forms from forms.zoho.in, then map your domain or sub-domain to the Hostname forms.cs.zohohost.in
  • If you are accessing Zoho Forms from forms.zoho.com.au, then map your domain or sub-domain to the Hostname forms.cs.zohohost.com.au

reCAPTCHA v2 ("I'm not a robot" checkbox)  

Including the reCAPTCHA v2 "I'm not a robot" checkbox will prompt the respondent to select a checkbox to validate that the respondent is not a robot. To use this CAPTCHA version,

  1. Navigate to Settings > General >Spam Control.

  2. Under Select a CAPTCHA version, select Google reCAPTCHA v2 ("I'm not a robot" checkbox).

  3. Enter the API Key pair provided by Google after registering your website and domain.

  4. Select the required Language and Theme for your reCAPTCHA v2. The options supported by Google will be listed here.


reCAPTCHA v2 (Invisible reCAPTCHA badge)  


Unlike reCAPTCHA v2 checkbox, the Invisible reCAPTCHA badge does not require the user to select a checkbox. Instead, it validates respondents in the background when they click Submit

To use this CAPTCHA version,

  1. Navigate to Settings > General >Spam Control.

  2. Under Select a CAPTCHA version, select Google reCAPTCHA v2 (Invisible reCAPTCHA badge).

  3. Enter the API Key pair provided by Google after registering your website and domain.

  4. Select the required Language and Theme for your reCAPTCHA v2. The options supported by Google will be listed here.

reCAPTCHA v2 (Invisible reCAPTCHA badge)  configuration

Refer to the FAQs on CAPTCHA.

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