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Please follow this link, Changing Upload Size Limit.
As shared by tkdmc90, please refer to the link mentioned. In case you missed it, here it is: http://www.jotform.com/help/33-Changing-the-Upload-Size-Limit.
For a quick reference, I've quoted this information:
JotForm upload max size = 1GB or less per file (use 1048576 value in KB to set the 1GB limit)
JotForm maximum number of files = Recommended value is up to 25 files per request (submission).
I hope this helps. Do let us know if you needed more information on this.
Thankyou for your kind response, I want to confirm that I just used Label to display link - the URL at the back-end is same :)