Is there a limit to the total file upload capacity per form?

The maximum file size per upload is 1GB. It means that every submission can include 1GB uploaded files and you have allowed uploading up to 25 files per submission. As a Silver user, you have limitation for 100GB of upload space per month. 

Please check the guide below for more information:

http://www.jotform.com/help/33-Changing-the-Upload-Size-Limit

If you have any question or issues, please do not hesitate contacting us. We will be glad to assist you.