JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
Please be noted that by default the max file size of upload field is set as "1 MB" but it is possible to change it. You may like to take a look at the following guide which should help you: https://www.jotform.com/help/33-Changing-the-Upload-Size-Limit
Hope this helps.
Do get back to us if you have any questions.