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.
You may extend the size limit of the upload file by pressing the MAX FILE SIZE on the top toolbar.
Please keep in mind, depending on your plan and files uploaded. The storage limit could be reach quickly.
Please let us know if you require any more assistance.
How can I find that tool bar? :)
Once you select the file upload field of your form, the toolbar should be visible. Please check the screenshot below:
You may also like to check the following guide as well: http://www.jotform.com/help/33-Changing-the-Upload-Size-Limit
Hope this helps.
Do get back to us if you have any questions.