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.
I am not sure if I have understood your question correctly. We have received an empty question with just the title as "max file upload size".
Do you want your users to be able to upload bigger file? Please be noted that by default, file uplo field is set to allow 1 MB of file upload but it is possible to increase the file upload size limit. The following guide 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.