What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.

We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.

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    How can I make your forms more secure against spam?

    Asked by gndzero on April 14, 2014 at 02:57 PM

    I am running some old websites which we are in the process of updating but it is a massive project and many of these sites will not even be addressed until next year. That being said, we are getting a TON of spam every day. I need to know if there is something I can do to change this. You've helped me out in the past and the last thing i was told to do was run your form in an iFrame. I've done that, but we are having a TON of spam issues again and I workable solution.

    The site in question which is giving me the most grief is http://www.lgtile.com/esd-vinyl-tile-order.php


    Please let me know what I can do.


    Thank you!

    Page URL:

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    JotForm Support

    Answered by BDAVID on April 14, 2014 at 03:45 PM

    Hi, you can use the "Unique Submission" feature under "Form Limits" of your form "Preferences".

    Select "Loose check" to prevent users from submitting the form multiple times from the same computer. You can select "Strict check" to prevent multiple submission from the same IP address. This will help you to prevent spam, let us know if you have more questions, we will be glad to assist you.