Do QR codes expire? What actually stops working

The code is just a picture of a link

A QR code stores text — usually a URL — as a grid of black and white modules. That is all it is: an image format for a string. There is no timer, no expiry field, no scan counter inside the pattern. Print it, laminate it, put it on a wall for ten years, and the modules will still say the same thing.

So a QR code never expires. What expires is whatever it points at.

Then why do people's codes stop working?

Because "QR code" is used to describe two different things, and only one of them survives on its own.

• Static: the pattern contains the destination, https://example.com/menu, literally. Nothing stands between the phone and the page.
• Dynamic: the pattern contains a short link, tinyto.me/menu, and that link redirects. The redirect lives on a server that someone has to keep running.

When a code "expires", in almost every case it was dynamic and one of three things happened.

1. The redirect service stopped

The company shut down, discontinued the product, changed its free plan, or simply deleted old links. The code on the wall is fine; the server that answered for it is not. This is the failure mode nobody warns you about when you buy dynamic codes, and it has happened repeatedly across the industry.

2. The destination moved

A static code is only as durable as its URL. Redesign the site, rename /menu to /restaurant/menu, change domains, and the code points at a 404. The code still scans perfectly — it just leads nowhere.

3. It never worked reliably

The most common "expired" code was simply printed too small, on a low-contrast background, with no quiet zone, or stretched out of proportion. It scanned fine on the designer's screen and fails on a phone at arm's length.

What to check when a code stops working

1. Scan it and look at the URL bar before the redirect. If you see a short domain you do not recognise, the code is dynamic and that domain is the weak point.
2. Open the destination directly. If the page itself is gone, no amount of QR debugging will help.
3. Try from a second phone and a different network. Corporate Wi-Fi and old scanners fail more often than codes do.

How to print a code that cannot strand you

There is one rule that removes most of the risk: make the code encode a link you control. If the pattern contains yourdomain.com/x7 and that link is yours, you can repoint it whenever you like, and you can check it is alive before you need it.

That is exactly what a short link is. It also has a second benefit: a shorter payload produces a sparser pattern, which is easier to scan at small sizes.

Three habits worth adopting before any print run:

• Keep a list of where each code went. A code you cannot find is a code you cannot repoint. One line per code — the link, the surface, the date.
• Print one proof and scan it with two phones at the distance it will be read from. Not the screen: paper, at final size.
• Ask what happens if the provider disappears. If the answer is "the code dies", price the reprint before you commit.

Where TinyTo stands

Links on TinyTo do not expire, and a free account is enough to keep them resolving, so a dynamic code made here keeps working. The honest caveat is the same one that applies to every provider, including us: the redirect depends on a server staying up. What you can control is who runs it and whether you can export the list.

If you only need a fixed image, the free QR code generator makes one in the browser with no account. If the code is going on packaging or a shop window, read how dynamic codes work first — the comparison article covers when static is simply the better answer.

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