How to change a QR code’s destination without reprinting it

A printed QR code can keep working after its destination changes if it contains a short URL whose redirect you control. The image stays the same. You only change the page that the short URL opens. That’s what a “dynamic” QR code for a website link really means.

If the code already contains a final address that you don’t control, a new short link can’t change the printed image. Start by scanning the existing code and checking which address it contains, then decide whether you can update it or need to reprint.

Understand what the QR code contains

Links makes a QR code for each link’s reunified.link short URL. A visitor scans the code, opens that URL and is sent on to the link’s current destination, following its rules. When you change the destination, the short code and its QR image stay the same.

A code that contains a menu PDF’s own address works differently. Moving the PDF doesn’t change the address stored in that code. If you control the old web address, you may be able to keep it working or redirect it to the new place. Otherwise, replace the printed code. What matters is who controls the address in the code, not whether a generator calls its image static or dynamic.

Create and download the code before layout

Open the Links app, create a link with the destination you want and give it a title you’ll recognize, such as “Autumn workshop poster.” Open the link and press QR code. Download PNG or SVG; both contain the same short URL.

Use the downloaded file in your layout and keep the original alongside the artwork. SVG is useful when your design tool supports it and you need to resize the artwork; PNG works in tools that expect an image file. Don’t stretch the square into a rectangle. Keep a record of the short URL, intended placement, destination and person responsible for updates so an older poster remains identifiable.

Leave space around the code and test the print

Keep the white margin that comes with the downloaded file. QR codes need a clear border, called the quiet zone, four modules wide on every side, as DENSO WAVE’s code-area guidance explains. A module is one small square in the pattern. Don’t crop this margin or put a caption, border or logo inside it.

Print a proof at the final size, on the material you’ll really use. Scan it with more than one phone, from the distance and in the light people will have. Check the finished surface too: a laminated menu and an uncoated flyer need separate tests. No single minimum size works everywhere, so if your tests fail, make the code larger or move it. Add a readable web address and a few words about what opens, for people who can’t scan it.

Change the destination behind the same code

Say a café replaces its seasonal menu. Open the existing link in Links, change the main destination to the new menu URL and save. Scan a copy of the original printed code and check the menu that appears. You don’t need to download another QR image, because the short URL stays the same.

Check the link’s rules before you call the update done. A language or country rule can still send some visitors to the old menu. Test those versions and keep a useful main destination for everyone else. The short-link editing guide shows how to keep a way back; the routing guide covers multiple destinations.

Separate scan problems from destination problems

If the camera can’t recognize the code, check the print sharpness, that the code is still square, the clear margin, the light and the distance. Try the original downloaded image on another screen to see whether the problem comes from the printed layout.

If the phone recognizes an address but the wrong page opens, check the short URL in the code, any matching rules and the final website. If the page itself won’t load when you open it directly, changing the QR artwork won’t fix it. If the link says it’s unavailable, check your credits: each counted click uses credits (see the current pricing), links pause when the balance runs out, and the same credits pay for other Reunified services.

Maintain printed links after the launch

Plan your own check before each event, menu change or print run. Scan a real printed copy, make sure the promised content opens and write down the result. After registration closes, a seasonal poster can lead to a useful “event ended” page instead of an unexplained error.

Keep the original link while printed copies are still around. Deleting it stops that short URL for good, and a new link won’t fix old copies. If you want to compare different placements, plan separate links before printing and follow the UTM and click analytics guide. Links gives you the editable destination and the downloadable code; your testing makes sure the printed code works.