Is your file already in the Internet and you just want to create a static link to it?
Go straight to Create a QR code for a website or URL and put the link to your file there

Would you like to upload your file (or maybe several files), be able to modify the file at any moment and monitor who has scanned your QR code?
Sign up for a free trial of the PRO account on ScanMeFindMe and try Dynamic QR codes