Keep your forms spam-free with CAPTCHA

Keep your forms spam-free with CAPTCHA

Is your online form getting loads of unwanted responses? Tired of spam ruining your valuable form data? CAPTCHA is the solution you are looking for.

CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is a simple yet effective security measure that helps protect your online form from spam and automated submissions. Bots disrupt the data collection process by flooding the form with multiple spam responses. Placing an CAPTCHA prevents these unwanted responses by using simple tests to distinguish between humans and bots. Zoho Forms offers three different types of captcha to keep spam responses at bay. They are:

  • Zoho Forms CAPTCHA

  • Google reCAPTCHA v2 (I'm not a robot)

  • Google reCAPTCHA v2 (invisible reCAPTCHA badge)

 

Zoho Forms CAPTCHA - Contains distorted numbers and letters that the user must type correctly to submit the form.

Google reCAPTCHA v2 (I'm not a robot) - Users are presented with a checkbox labeled "I'm not a robot". It validates by analyzing the underlying mouse movement, browser history, and typing pattern to determine the likelihood of a bot. If the system suspects a bot, additional challenges like image verification might be presented.

Google reCAPTCHA v2 (Invisible reCAPTCHA badge) - Similar to Google reCAPTCHA v2, but without any explicit checkbox. It validates the user using mouse movements and cookies stored by the browser. If still unable to determine whether the user is a human, it provides tests like image recognition to prevent spam responses.


How to add CAPTCHA?

To add a CAPTCHA to your form,

  1. In your form builder, navigate to Settings.

  2. Under Spam Control, select CAPTCHA.

  3. From the dropdown, select the CAPTCHA version you want to add to your form and configure it.

 Configuring CAPTCHA


When to use CAPTCHA?

High spam volume: If your form is receiving a significant amount of spam, CAPTCHA can be a valuable tool to filter out automated submissions.

Sensitive data: For forms collecting sensitive information (e.g., contact details, financial information), adding CAPTCHA can provide an extra layer of security.

Embedded Forms: Forms placed directly on websites are more vulnerable to spam and require CAPTCHA for added security.


Which CAPTCHA to choose?

  • If you are looking for a straightforward solution that provides security while maintaining a familiar user experience, then opt for Zoho Forms CAPTCHA.

  • If user experience is top priority and you have a low bot traffic risk, the invisible badge can be a smooth option.

  • If clear user feedback and strong bot protection are crucial, the "I'm not a robot" checkbox might be the better choice.

  • Few CAPTCHA can present challenges for users with disabilities. Prioritize accessible CAPTCHA options or explore alternative verification methods to ensure inclusivity.


While CAPTCHA is a valuable tool for combating spam, it's essential to recognize its limitations. No CAPTCHA is entirely foolproof, but they can significantly deter bots.  Carefully consider your form's needs and audience to effectively implement CAPTCHA to protect your data without compromising user satisfaction. For optimal protection, use CAPTCHA with other security measures. 


    • Sticky Posts

    • Easily track referrals with Zoho Forms

      Referral tracking can be a powerful way for businesses to understand where their leads are coming from. With Zoho Forms, tracking the referral sources of your leads is an easy and straightforward process. Here are some tips to help you make the most of
    • 9 Ways to use Zoho Forms this Navratri

      Hello form builders!Navratri is almost here! It is a time for celebration and culture in the Indian community, and organizing such a grand event can be overwhelming. But with the right tools, you can streamline the process and focus on creating unforgettable
    • The secret to collecting data from valid users

      Collecting accurate data is crucial for making informed decisions. Zoho Forms offers two efficient ways to validate user data and ensure that you collect entries exclusively from valid users. Double Opt-in: Double Opt-in is a privacy feature that ensures
    • Storage space in Zoho Forms: The ultimate guide to efficiently managing your data

      Are you using Zoho Forms for data collection? As with any data-intensive application, understanding how storage space is calculated is essential. That's why we've created this guide— to show you everything you need to know about managing storage space
    • Linking primary form submissions to a second form submission

      Let's imagine you have a form that you use to request a minimal amount of data from your users. To collect additional information, you redirect them to another form either automatically or based on a condition. During the course of redirection, you can

    Nederlandse Hulpbronnen


      • Recent Topics

      • Make CAMPAIGNS email look as simple as possible

        Hi there I'm trying to make my Campaigns email look as much like a normal email as possible. I'm a bit stuck with the "justification" of the email email block. Can I LEFT JUSTIFY the "whole email" to make it look "normal"? (Please see screenshot attached)
      • [Webinar] Top 10 Most Used Zoho Analytics Features in 2025

        Zoho Analytics has evolved significantly over the past year. Discover the most widely adopted features in Zoho Analytics in 2025, based on real customer usage patterns, best practices, and high-impact use cases. Learn how leading teams are turning data
      • Sorry! we encountered some problems while sending your campaign. It will be sent automatically once we are ready. We apologize for the delay caused.

        Hello. Lately we are having problems with some campaigns, which show us this error message. Sorry! we encountered some problems while sending your campaign. It will be sent automatically once we are ready. We apologize for the delay caused. We can't find
      • Can I remove or divert certain contacts from an active Campaigns workflow?

        I have created a workflow in Zoho Campaigns, which sends different emails, once contacts have been added to a mailing list. To choose which email to send to the contacts, there are conditions, which divert contacts based on their company type and their company size. There was a subsection of this workflow, where company size wasn't selected correctly, and some contacts have been sent down the wrong path and received the wrong email. The workflow contains a reminder loop and a further series of emails.
      • Customizing Helpcenter texts

        I’m customizing the Zoho Desk Help Center and I’d like to change the wording of the standard widgets – for example, the text in the “Submit Ticket” banner that appears in the footer, or other built-in widget labels and messages. So far, I haven’t found
      • File Upload field automatically replaces spaces with underscores – support experience

        Hi everyone, I want to share my recent experience regarding the File Upload field behavior in Zoho Creator and my interaction with the Zoho support team. When a user uploads a file, the system automatically renames the document by replacing spaces in
      • How to map fields from Zoho Recruit to Zoho People

        I've got these fields from my Job Offer that I'm trying to map to the Work information fields in Zoho People, but they arent showing up. For example, how do I get the department name field (in the job post) to map to the work information field in Zoho
      • UTM in zoho campaigns

        Helloo everybody!!! Someone know how IF ZOHO CAMPAIGNS has UTM for tracking the url of any campaigns. thank u
      • Full Context of Zoho CRM Records for Zia in Zoho Desk for efficient AI Usage

        Hello everyone, I have a question regarding the use of Zia in Zoho Desk in combination with CRM data. Is it possible to automatically feed the complete context of a CRM record into Zia, so that it can generate automated and highly accurate responses for
      • Knowledge base printing

        I saw a posting about printing the knowledge base as I was looking for the answer, but we would like the ability to print out the entire knowledge base with a click, keeping the same organization format.   Bonus would include an index of keywords and
      • Search not working!

        I have items in my notebook tagged but when I search for a tag nothing comes up! Any fix for this?
      • Zoho Books | Product updates | January 2026

        Hello users, We’ve rolled out new features and enhancements in Zoho Books. From e-filing Form 1099 directly with the IRS to corporation tax support, explore the updates designed to enhance your bookkeeping experience. E-File Form 1099 Directly With the
      • Updates for Zoho Campaigns: Merge tag, footer, and autoresponder migration

        Hello everyone, We'd like to inform you of some upcoming changes with regard to Zoho Campaigns. We understand that change can be difficult, but we're dedicated to ensuring a smooth transition while keeping you all informed and engaged throughout the process.
      • File Upload field not showing in workflow

        Hi, I have added a field on Zoho CRM. I want to use it in a workflow where that particular field is updated based on another field, however it is not showing up in the field list to select it in the workflow. Why is this please?
      • Drag 'n' Drop Fields to a Sub-Form and "Move Field To" Option

        Hi, I would like to be able to move fields from the Main Page to a Sub-Form or from a Sub-Form to either the Main Page or another Sub-Form. Today if you change the design you have to delete and recreate every field, not just move them. Would be nice to
      • How do i integrate google analytics to Zoho Campaigns?

        Looking to track Zoho Traffic from email Current topic is outdated
      • How do teams manage meeting follow-ups across Zoho tools?

        We’re using Zoho tools for collaboration and tracking, but managing meeting notes, action items, and follow-ups across teams is still challenging. Curious how others are handling this within Zoho workflows. Are there best practices or integrations that
      • Adding a Deal to and Existing Contact

        I want to easily add a Deal to an existing Contact. If I click on New Deal on the Contact page this currently this is what happens: All of the mandatory field (and other field) information exists within the Contact. Is there a simple way for it to automatically
      • Zoho Sprint Backlog View, filter by item status

        Hello, In Zoho Sprints, it would be great to be able filter out specific items in the Backlog based on their status. We would like to track items that were Removed from our backlog without seeing them constantly in the Backlog view, as this view should
      • Customize Colors used on graphs and charts according to users desire.

        It would be great if we could customize the graph's colors as we see fit. I hate that yellow is always the default color!
      • Let us view and export the full price books data from CRM

        I quote out of CRM, some of my clients have specialised pricing for specific products - therefore we use Price Books to manage these special prices. I can only see the breakdown of the products listed in the price book and the specialised pricing for
      • Mejoras urgentes para ZOHO MEETING

        Tengo unos meses usando Zoho Meeting. En general, es buena, pero hay cosas vitales que no logra cumplir con mínima calidad. 1) Calidad de audio y video: urge mejoras. Audio con retraso, imagen borrosa, mal recorte de silueta con fondos virtuales. Además,
      • Multiple header in the quote table???

        Hello, Is it possible in Zoho CRM to add multiple headers or sections within the Quote product table, so that when the quote is printed it shows separate sections (for example “Products” and “Services”)? To clarify, I’m asking because: This does not appear
      • Saving sent email campaign as PDF

        I'm looking to add all campaigns sent to an archive folder in sharepoint. Is there anyway to accomplish this in Zoho Flow ? I'm falling at the first hurdle ... can I automatically save a sent campaign as a PDF to a folder location ?
      • Exporting All Custom Functions in ZohoCRM

        Hello, All I've been looking for a way to keep about 30 functions that I have written in Zoho CRM updated in my own repository to use elsewhere in other instances. A github integration would be great, but a way to export all custom functions or any way
      • How can Data Enrichment be automatically triggered when a new Lead is created in Zoho CRM?

        Hi, I have a pipeline where a Lead is created automatically through the Zoho API and I've been trying to look for a way to automatically apply Data Enrichment on this created lead. 1) I did not find any way to do this through the Zoho API; it seems like
      • Conditional Layouts On Multi Select Field

        How we can use Conditional Layouts On Multi Select Field field? Please help.
      • Appreciation to Qntrl Support Team

        We are writing this topic to appreciate the outstanding level of support from Qntrl Team. We have been using Qntrl since 2022 after shifting from another similar platform. Since we joined Qntrl, the team has shown a high level of professionalism, support,
      • How can I hide "My Requests" and "Marketplace" icon from the side menu

        Hello everybody, We recently started using the new Zoho CRM for Everyone. How can I hide "My Requests" and "Marketplace" from the side menu? We don't use these features at the moment, and I couldn't find a way to disable or remove them. Best regards,
      • Whatsapp Integration on Zoho Campaign

        Team: Can the messages from Zoho Campaign delivered through Whatsapp... now customers no longer are active on email, but the entire campaign module is email based.... when will it be available on whatsapp.... are there any thirdparty providers who can
      • Quotes Approval

        Hey all, Could you please help in the following: When creating quotes, how to configure it in a way, that its approval would work according to the quoted items description, not according to quote information. In my case, the quote should be sent to approval
      • Mandatory Field - but only at conversion

        Hello! We use Zoho CRM and there are times where the "Lead Created Date & Time" field isn't populated into a "Contractor" (Account is the default phrase i believe). Most of my lead tracking is based on reading the Lead Created field above, so it's important
      • Different Task Layouts for Subtasks

        I was wondering how it would be possible for a subtask to have a different task layout to the parent task.
      • Enable Free External Collaboration on Notecards in Zoho Notebook

        Hi Zoho Notebook Team, I would like to suggest a feature enhancement regarding external collaboration in Zoho Notebook. Currently, we can share notes with external users, and they are able to view the content without any issue. However, when these external
      • Using data fields in Zoho Show presentations to extract key numbers from Zia insights based on a report created

        Is it possible to use data fields in Zoho Show presentations along with Zoho Analytics to extract key numbers from Zia insights based on a report created? For example, using this text below: (note that the numbers in bold would be from Zia Insights) Revenue
      • Free webinar: AI-powered agreement management with Zoho Sign

        Hi there! Does preparing an agreement feel like more work than actually signing it? You're definitely not alone. Between drafting the document, managing revisions, securing internal approvals, and rereading clauses to make sure everything still reflects
      • WhatsApp Channels in Zoho Campaigns

        Now that Meta has opened WhatsApp Channels globally, will you add it to Zoho Campaigns? It's another top channel for marketing communications as email and SMS. Thanks.
      • CRM For Everyone - Bring Back Settings Tile View

        I've been using CRM for Everyone since it was in early access and I just can't stand the single list settings menu down the left-hand side. It takes so much longer to find the setting I need. Please give users the option to make the old sytle tile view
      • Lets have Dynamics 365 integration with Zohobooks

        Lets have Dynamics 365 integration with Zohobooks
      • Add notes in spreadsheet view

        It would be great if we could Add/edit notes in the spreadsheet view of contacts/leads. This would enable my sales teams to greatly increase their number of calls. Also viewing the most recent note in the Contact module would also be helpful.
      • Next Page