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.
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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.
The maximum file size for each upload session is actually 1GB. This is similar to all subscription type (Free or Paid plans). The file size that differs accross the plans was actually the storage size (paid plans have higher capacity for storage)
I suggest you review the user guide: Changing-the-Upload-Size-Limit
You can see the Max File Size property of the Upload field in the form where you can change the file size.
Hope this help. Let us know if you need further assistance.