Dynamic QR codes
Dynamic QR codes you can change after printing
A dynamic QR code is a QR code whose destination can be changed after printing, because it encodes a short redirect address instead of the final page.
Last reviewed 27 October 2026 by the CTAurl team
- 3new codes a month free
- SVG + PNGdownloads for print and screen
- ZEROreprints to change a destination
One print run
One dynamic QR code for a waitlist, a menu and a review form
A dynamic QR code on a table tent can open a waitlist before launch, the menu on the night and a review form the week after. You change the destination in CTAurl between each stage, and one print run covers all of them.
Design
QR code design: colour, pattern and your logo
CTAurl QR codes can use patterns, corner styles, colour presets tuned for contrast and a centre logo. Which design options you can use depends on your plan. Every plan downloads SVG for print and PNG for documents and slides.
Measured
How big can a logo be on a QR code?
In our test, a centre logo could cover 15.5% of a QR code at the highest error correction and still decode, and 2.6% at the lowest. We cleared the centre of test codes until they stopped decoding. Keep your logo to about half of the figure for your level.
| Error correction | Largest clear centre |
|---|---|
| L | 2.6% |
| M | 7.6% |
| Q | 11.9% |
| H | 15.5% |
Clean digital renders of the same short address at QR versions 2 to 4, one decoder, measured 20 October 2026. Not tested in print or on phone cameras.
Read the methodYour printed codes keep working, even after you stop paying
A printed QR code depends on whoever runs the redirect behind it. In Basel in 2023, QR codes on printed civil-protection notices sometimes opened a paid-subscription advert instead of the intended page, and the canton asked residents to stop scanning and destroy the notices (Basel-Stadt Justice and Security Department, September 2023). CTAurl runs its own redirect and never shows an ad screen.
If you stop paying, the codes you printed still open the page they last pointed to. Nothing is deleted for inactivity, and scans are never billed. The exceptions are abuse of the service, a legal requirement, or CTAurl ceasing to operate, in which case we give advance notice and an export.
See the plans
Frequently asked questions
Does a dynamic QR code still work after I change the destination?
Yes. A dynamic QR code's printed pattern encodes a short CTAurl redirect address, and that address stays the same. Change the page behind it and every code already printed opens the new page from the very next scan.
What happens to my printed codes if I stop paying?
Your printed CTAurl codes keep working after you stop paying and open the page they last pointed to. Nothing is deleted for inactivity. The exceptions are abuse of the service, a legal requirement, or CTAurl ceasing to operate, in which case we give advance notice and an export.
Which file format do I get?
CTAurl QR codes download as SVG, a vector format that stays sharp at any print size, and as PNG for documents and slides. Send the SVG to your printer or drop either file into a design tool.
How many QR codes can I create?
Plans set how many new QR codes you create each month: 3 on Free, 10 on Starter ($6 a month), 30 on Growth ($12) and 60 on Scale ($29). Codes from earlier months are not counted against anything and keep working, so there is no cap on how many you keep.