Upload a photo of a QR code, or paste the link inside it. We'll show where it really goes, who controls it, and whether it can expire.
On a phone you can take the photo right now.
The photo is read in your browser and never uploaded. We send only the link to our server to follow its redirects, and we don't store it.
A static QR code can't: it is your link drawn as squares, so it works as long as the page it points to exists. A dynamic QR code goes through the generator's short link first, and that link only works while the generator keeps it switched on. Some services switch it off when a free trial or subscription ends.
Check it here: upload a photo of the code or paste the link inside it. If it goes straight to your own website, it is static. If it goes through another company's short link first, it is dynamic, and that company decides where it goes.
Not the code that is already printed: it points to the other company's address, so only they can switch it back on. What you can do is make a new code once, and choose one that keeps working even if you stop paying.
No. A MostlyQR dynamic code keeps redirecting to its last saved destination even if you cancel a paid plan, for as long as you keep your free account and MostlyQR runs. Your first dynamic code is free, no card required.
No. The code is read in your browser. Only the link inside it is sent to our server, so we can follow its redirects (a browser can't do that across sites). We don't store the link.
Read the guide: why QR codes stop working, and how to check yours