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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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    Loads of duplicate submissions

    Asked by tracyalexander on May 29, 2017 at 12:50 PM


    I have started getting loads of duplicate submissions, why is this?  

    I deleted alot this morning but have just got alot more in from one person, same submission

    Page URL:

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    Answered by Sven on May 29, 2017 at 01:40 PM


    This could be due to users refreshing the page, or not closing the session and submitting again. You can set your form to only accept unique submissions, either based on the cookies (loose check) or on the IP address (strict check). Please refer to the guide for a step by step walkthrough on how to enable unique submissions. 



    Thank you!

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    Answered by tracyalexander on June 09, 2017 at 05:27 AM



    I did the loose check and it made no difference - every so often I would get loads of duplicates through.

    Can you provide any further advice as this has been a huge problem  this year.

    May I suggest if you cant stop them from submitting that you develop a tool where I can easily move submissions that match every field?

    Thank you

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    JotForm Support

    Answered by liyam on June 09, 2017 at 06:54 AM

    Hello tracyalexander, 

    Once you have enabled your unique submissions, only by that time that it will log cookies on to the browsers who made the submission so you may encounter duplicates for those who already made submissions, but that will be the last time they will be able to do so. The next time the page loads again they will be bounced off with a page saying that they can only submit once.

    Another method I can recommend is by pointing your form's thank you page to an external URL. This way they will be redirected somewhere else. Still, you will be receiving duplicates from those users but after that they will be thrown out of the page where they constantly get a prompt to confirm on making submissions. You can check out this page to learn more: https://www.jotform.com/help/38-Redirecting-Users-to-a-Different-Page

    If you have additional questions or if you need further clarification, please let us know.