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Hi, Jairo Gomez,
You will be able to set the maximum file size when uploading files. You may follow this guide to change the limit of the file size.
And if you would like to know the available limit you will be having with each plan that JotForm offers, please refer to this pricing guide.
I hope this helps. Should you have further question about this matter, kindly let us know and we will be glad to assist you.