Free tool
Wedding QR code generator
Paste the link to your photo album and get a QR code and a 5x7 table sign to print. What you type stays on this page.
Your 5x7 table sign
Scan to share your photos
The PNG is the code alone, 1200 pixels square. The sign prints by itself at 5 by 7 inches.
Want the code to open a camera?
Unposed makes its own sign to print, and its code opens a camera on each guest's phone, with nothing to install. Every guest gets a roll of 36 shots by default, and every shot lands in one gallery. Free for up to 10 guests.

How to make a QR code guests scan
Size it for the distance
Make the code about a tenth as wide as the distance it's read from. On a table card, that's 2.5 to 3.5 inches.
Leave a blank margin
Keep flowers and frames away from the code's edge. Print it dark on light, on matte paper, because gloss under string lights throws glare into the camera.
Test it on two phones
This page makes a static code, which works as long as your link does. Scan it with an iPhone and an Android phone before you print a card for every table.
Read the whole guide: How to set up a QR code for wedding photos.