i just need to make a file upload in the format of PDF how do i do that

Hello,

You can try setting an allowed file format for uploaded files. Here you can set the upload file format to PDF and only PDF files will be accepted on uploads. 

Here's a guide to help: https://www.jotform.com/help/29-How-to-Change-the-Allowed-File-Types-in-the-Upload-Field

Please, let us know if you need anything else. 

Thanks