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

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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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    File Upload field issue

    Asked by denise032 on September 28, 2011 at 11:57 AM

    I recently created a form and when I went to test it (Mac, FF7), I was unable to attached a 12k word docx file. After I clicked submit, I received the following error message:

    You can only upload following files: .pdf, .doc, .docx
    Form #: 12701902282
    Please advise.
    Page URL:

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    Answered by allanftd on September 28, 2011 at 02:08 PM

    Hi Denise,

    I checked your form's Extensions settings and removed the dot (.) just before each file extension so that it becomes like this:

    pdf, doc, docx

    Then I tried to submit a docx file in your form and was able to submit it. Please try it also and let me know if it works fine with you or not.

    Thank you and enjoy using JotForm!


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    Answered by denise032 on September 28, 2011 at 03:15 PM

    Hey Allan-

    Thanks, but it's still not letting me attach anything. I've tried doc, docx, and pdf (no more than 50k in size) and still no luck. :(

    It seems to be specifically a Firefox issue (I tested using version 7), as I've tried on Safari and Chrome and it seems to go through just fine.




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    Answered by melissastyle on September 29, 2011 at 03:14 PM

    I built a form yesterday and I'm running into this issue as well.  File upload field works fine in IE, Safari, Chrome, but not Firefox (version 7.0).  It gives me the file extension error no matter what file extensions the field is set to accept.

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    JotForm Support

    Answered by idarktech on October 01, 2011 at 05:16 AM

    Hi guys,

    Sorry for the inconvenience.

    As we all know that firefox 7 was just release week ago, so I am sure there are some changes on the said browser that this may have caused, but I am pretty sure the jotform's development team are doing their best to fix this issue. Thank you.