Do QR codes expire? Static vs dynamic explained

The short answer is: a QR code, as a technology, cannot expire. What people actually experience as "my QR code stopped working" is almost always a dynamic QR code whose provider stopped forwarding it — a business decision, not a flaw in the QR standard. This guide explains the difference plainly, gives you a way to check which kind you have, and tells you when paying for a dynamic code is actually worth it.

The direct answer

A QR code is a pattern that encodes data using error-corrected two-dimensional barcodes, standardized by ISO/IEC 18004. Once that pattern is printed or saved as an image, decoding it always produces the same result — there is no clock inside it, no expiry date, and no way for the pattern itself to "turn off." If a QR code has genuinely stopped working, one of three things happened: the thing it points to no longer exists (a web page was taken down, a WiFi password changed), the code is a dynamic code and its provider stopped redirecting it, or the code was damaged or printed too small to scan reliably.

Most of the "does my QR code expire" panic online traces back to the second case, so it is worth understanding exactly how that happens.

How to tell which kind of QR code you have

The easiest way to check is to scan it and look at what opens.

1. Scan it with your phone's camera, the way anyone else would.
2. Look at the URL bar if it opens a web page. If the domain is the one you expect — your own website, or the destination you originally set — you very likely have a static code, or a dynamic code that is currently still working.
3. If the domain is unfamiliar — a short-link domain like bit.ly, qr.page, qrco.de, or a provider's own redirect domain that is not the site you meant to link to — you have a dynamic code. The scan first hits the provider's server, which looks up your real destination and forwards you there.
4. If it is not a URL at all — it fills in WiFi credentials, opens a contacts card, or pre-fills a text message or email directly — it is static by definition. Those content types have nothing to redirect through; the data is in the code itself.

If you did not create the code yourself and have no way to scan it (a code that already stopped working, printed on something you cannot access), you cannot tell which kind it was after the fact. That is itself a small argument for static codes: their behavior is never a mystery.

Static vs dynamic QR codes compared

What to do if your printed QR code stopped working

If a code you printed no longer works, first scan it (if you still have a working copy or photo of it) to see whether it is dynamic and check what domain it tries to reach. If it is a dynamic code and the provider's service is gone, there is no way to recover the original destination through the code itself — you will need to know what it originally pointed to from your own records, generate a new code (ideally a static one this time), and replace every printed copy. If it is a static code, the QR code itself did not fail; check whether the destination changed instead — a moved web page, an expired promotional URL, or a changed WiFi password.

How to make one that cannot stop working

Use a static QR code type for anything permanent: a URL you control and do not expect to change often, WiFi credentials, a vCard, a phone number, or an email template. A static QR code generator that draws the image in your browser, with no server-side redirect in the middle, has nothing to switch off later. See QR codes that never expire for a fuller explanation of how that guarantee holds.

If you do need the destination to be editable — say, a link that starts at a "coming soon" page and later needs to point at a live product page — use a URL you control directly (a page on your own site that you can edit, or your own redirect) rather than relying on your QR generator's business model to keep a third-party redirect alive for years.

When dynamic is worth paying for

Dynamic codes earn their cost in two situations: campaigns with a real need to change the destination after printing (a limited-time offer, an A/B test between two landing pages), and situations where scan analytics is the actual deliverable — proving a print ad or poster drove traffic, for example. A large batch of physical signage that would be expensive to reprint, where a single dashboard update beats sending someone out to re-laminate a hundred table tents, is a reasonable case too.

If you need any of those, pick a dynamic QR provider you have reason to expect will still be operating in a few years, read what happens to a code when a subscription lapses before you commit, and treat the code as valid only for as long as you keep paying for it — not as a permanent asset the way a static code is. For everything else — the vast majority of business cards, menus, WiFi signs, warranty labels, and product packaging — a static code does the job for free, does not carry an ongoing bill, and works for as long as you need it.

Ready to make a QR code with nothing to renew? Create a free QR code — no sign up, no expiry.