• Our QR codes are not time-limited in any way and don't "expire".
• You can generate as many QR codes as you want.
• There are no limits on the number of times they can be scanned.
• There are no limits on commercial use.

No. The use of QR codes is free of any license. The QR code is clearly defined and published as an open ISO standard. Denso Wave owns the patent rights on QR codes, and the methods used to encode and create them, but has chosen not to exercise them, however the term "QR code" itself is a registered trademark of Denso Wave Incorporated.

No. User-generated QR codes are made freely available to both free users and subscribers without any limitations or charges being levied. The QR code encoding method used for all QR codes generated on this website is identical regardless of user class. There is a charge however for the tracking analytics on your QR code(s). You must subscribe to one of our plans in order to receive the ability to track your code(s).

We recommend no smaller than 1.5-2cm however the minimum size of the QR code will be dependent on:

• The distance between the QR code and the scanning device, and hence the size the code will appear to be in the viewport of the scanning device - if you have one on the side of a building it would need to be very large because it's going to be scanned from a long distance, however if it's printed in a magazine then the scanning device will be held quite close to it.
• The size of the dots in the code - the more data you put into the code the smaller the dots become, so using a URL shortener to reduce the number of characters in the URL will result in a code with larger dots and hence it can be reproduced at a smaller size without impacting scan reliability.

Yes. Codes need to have a strong contrast between the code and the background color. If you select a darker colored code it should go on a lighter background (ex. black code on white background) a lighter colored code will need to have a darker background (ex. white code on a black background.) Also, always test your QR code to make sure it works using the color you've selected.