Why a PDF QR code is always dynamic
A QR code can't hold a whole document — it holds a link. QRCraft stores your PDF and the code points to a short link, so you can replace the file at any time and the printed code keeps working.
After scanning, visitors see a mobile page with your title, description and buttons to open or download the PDF. That works the same on iPhone and Android, where tapping a raw PDF link sometimes just downloads a file silently.
Tips for mobile-friendly PDFs
Keep the file small — under 5 MB opens quickly on mobile data. Export images at screen resolution rather than print resolution, and use a portrait page size so people don't have to zoom sideways.
If the document is long, consider building a mobile page instead: menus and price lists are easier to read as a page than as a scaled-down PDF.