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.

  • Profile Image

    Applying for Harpo grant and can't upload pdf

    Asked by Cal Cullen  on April 06, 2014 at 07:52 PM

    Everytime I try to upload a pdf for the Harpo Foundation Grant (https://secure.jotformpro.com/form/40586049939973), I get an error saying You have uploaded an invalid image file type.


    Not sure what the issue is, but I can't send in my form with this error. I have tried multiple pdfs. I have all lowercase in the title, and no spaces. They all end with the extension .pdf.  Very frustrating, Please help.

    Page URL:

  • Profile Image

    Answered by EvansK on April 06, 2014 at 10:03 PM

    Hello Cal,

    Looking though your form I realized that the file select field was set to validate images instead of a pdf file. You should deactivate the image validation under its properties.

    Another thing you need to do is to add the ".pdf" under the "Extensions"

    I hope this helps with your problem. 

    Thank you.

  • Profile Image
    JotForm Support

    Answered by abajan on April 06, 2014 at 10:17 PM


    Your first point is correct. PDFs are not images. However, pdf is already defined in the form's extensions list. So, there's no need to change anything there.


    Please load the form in the form builder and do the following:

    1. Click the field in question

    2. In the form builder toolbar, click the Validate Image button

    Save the form

    Do let us know if you need further help with this.