Menus on tables and windows
A sticker on the table or the door points at the current menu. Update the PDF when prices change and the sticker stays. Most cafes only ever needed this, not a subscription.
Link a menu, brochure or manual that you host. The code opens the file in the phone's browser, with no redirect server in between.
A PDF QR code stores the direct link to a hosted PDF file, so a scan opens the document immediately, with no intermediate landing page and no expiring redirect.

A table sticker points at a PDF on the cafe's own site. When the menu changes, the file is replaced at the same address and the sticker keeps working.
A short address on your own domain keeps the code small: this one is a version 3 symbol at level M, 29 modules across.
The code holds a link. The file lives wherever you put it.
A PDF QR code is a web address that ends in a file. The generator encodes the link exactly as you paste it and adds https:// if you left it off:
Nothing is uploaded here and nothing is hosted here. The file has to be reachable at a public address, which usually means your own website, or a cloud folder whose sharing is set to anyone with the link. Open the address in a private browser window before you print: if it asks you to sign in, so will the code.
/menu.pdf. A cloud share link with a long token can be 80 characters or more and pushes the symbol up two or three versions.dl=0 shows a preview page with the site's own chrome around it. Changing it to dl=1 serves the file directly.A 30-character link fits version 2 or 3 at level M and prints well at 20 mm on a table sticker. The phone opens the file in its browser, which renders PDFs inline on both iPhone and Android, with an option to open it in a reader app.
Documents that are read on the spot, from things that are printed once.
A sticker on the table or the door points at the current menu. Update the PDF when prices change and the sticker stays. Most cafes only ever needed this, not a subscription.
A code on the product or the machine itself opens the manual, the safety sheet or the wiring diagram. Nobody has to find the paper copy or search the model number.
Estate agents, galleries and trade stands hand out a card with a code instead of a stack of brochures. The visitor gets the full document and the stand runs out of nothing.
Other content types from the same client-side generator.
What people ask before they print one.