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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    Getting an error message

    Asked by Scot Cockroft on January 10, 2012 at 10:26 PM

    I put the free version of your form on our website.  We wanted to be able to upload documents straight into our dropbox account.  We get an error message that we are uploading a wrong 


    CPA Firms.xlsx has invalid extension. Only are allowed.


    We get this no matter what format we are trying to upload (excel, word, pdf etc.). 


    Page URL:

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    JotForm Support

    Answered by idarktech on January 10, 2012 at 10:36 PM


    The form itself seems to be fine, it accepts all type of document files. Can you please try to re-embed your form using iFrame code?

    To get your form's iframe code:

    1.  Go to Setup & Embed tab

    2.  Click Embed Form

    3.  Click iFrame

    4. Copy the provided code

    Please let us know if this doesn't help so that we can further assist you. Thank you so much!