Do QR codes expire? How to make one that won't

Do QR codes expire? The pattern itself never does, because a static code is just a web address drawn as black and white squares. When a printed code stops opening, something outside the pattern has ended: the service behind a dynamic code, a link shortener or the page it opens.

A code that lasts is easy to make. It has to be static and point at a page you own, with no subscription standing between the print and the page.

Do QR codes expire? A static code has no end date

A static code stores no timer, so only a worn print can end it. The generator turns the address you typed into the pattern and adds nothing else: no end date and no link to an account. A phone reads that address and goes straight to the page, without contacting the company that made the code.

A menu card printed years ago therefore scans the same way as one printed last week, as long as the camera can still read it. Scratches, stains and torn edges are what wear a print out, and none of them follow a calendar.

Every code also carries error-correction data, which is extra information a scanner uses to rebuild the parts it can't see. DENSO WAVE's QRcode.com describes four levels, and Level M, which restores about 15% of the data, is the one chosen most often. A small scuff usually still scans, while heavy damage stops the scan.

Why a QR code stops working: three causes outside it

Each cause is something the scan depends on after the camera reads the pattern: a forwarding service, a shortener or a web page. The table matches each one to the codes it affects and to the way out.

Causes of a dead code, by type of code

A dynamic code doesn't hold your address. It holds a short link on the QR service's server, and each scan is forwarded from there to the page saved in your account. The provider decides how long that forwarding runs, so read its terms before a dynamic code goes on anything costly to reprint.

What is a dynamic QR code? Static vs dynamic explains the forwarding in detail.

Some people shorten an address with a link shortener before turning it into a code. The code is then static, but it depends on the shortener the way a dynamic code depends on its provider. If the shortener stops forwarding, scans no longer reach your page, and putting the full address into the code avoids that dependence.

The third cause has nothing to do with QR services. If the page a code opens is deleted, renamed or moved, or the domain isn't renewed, the scan still works but the phone lands on an error page.

The pattern is unchanged and still readable, which is why it looks exactly like an expired code. The fix is on your website: bring the page back where it was, or redirect the old address to the page's new home.

Reading the link your camera shows to find the cause

The address inside the code is visible before the page loads, and its domain shows who is responsible for the failure. A phone camera shows that address as a link, so you can read it before tapping. Comparing the domain with your own site sorts the problem into one of three cases.

What the camera shows and what to do

If the address belongs to the company that made the code rather than to you, the code is dynamic or holds a short link. Tapping it and landing on the provider's own page instead of yours means forwarding has stopped, so the fix is in your account there and not on the print.

When the address is on your own domain and the page can't be found, the code is fine and the page isn't. Putting the page back at the old address, or redirecting that address to the new page, fixes every printed copy at once. Change QR code link after printing: check the URL walks through the redirect.

If no link shows up at all, the phone can't read the pattern, so expiry isn't the issue. Check the print for fading first, then work through QR code not scanning? Count the quiet zone first, which covers the blank margin around the code, its printed size and its contrast.

Fixing an expired QR code: renew the plan or reprint

The printed pattern holds a short link on someone else's server, so only that server's owner can bring the same print back to life. If the code is dynamic and the provider still has it in your account, a paid plan may turn the forwarding back on, and every printed copy works again. Whether that works depends on the provider's terms.

Log in to the account you used to make the code and look for it in the dashboard. If it shows as inactive or paused, read the terms before paying to see whether renewing restores that same code.

If the account or the company is gone, or the plan isn't worth keeping, make a new code. Put your page's full address in it so no service sits between the print and your page, then replace the printed copies. Scan a test print of the new code before you order the full run.

Making a QR code that doesn't expire: go static

Three choices leave the print as the only thing that can end the code: the type, the destination and the tool. Each one removes a dependence on someone else's service.

1. Choose the plain static type, not dynamic.
2. Enter the full address of a page on your own site.
3. Generate the code with a tool that makes static codes, then test-scan the print.

Generators name the two types in different ways. Labels such as "dynamic," "editable," "trackable" or "change the link later" all mean a code that depends on the company's forwarding, so pick the plain static option. You give up editing, but the code has nothing that can run out.

A static code lasts only as long as the page it opens. Point it at an address on your own website rather than at a file-sharing link or a URL shortener, which can change without your say-so. If you ever move the page, keep the old address alive with a redirect so printed codes follow it.

To make a QR code from a web address, a free QR code generator that creates static codes is all you need, and nothing has to stay running after you download the file. Test-scan the printed code with a phone before it goes anywhere public.

Do free QR codes expire? Static ones never do

Price has no bearing on a static code, because after the download the generator takes no part in scanning. Once the file is saved, only the pattern and your page matter, so a free static code behaves exactly like a paid one. When a free code stops working, the cause is one of the three outside it: a dynamic service, a short link or a missing page.

Free dynamic codes depend on the provider's terms in the same way paid ones do. Plans can come with small allowances, and the forwarding can end with the plan, so a free dynamic code suits a short campaign and not a print meant to last. For a side-by-side look at free generators, see QR Code Generator: What Free Actually Gets You.

A dynamic code printed for long-term use depends on its account staying active, whatever the plan is called. A static code made at the same moment carries no such condition, which makes it the safer choice for menus, flyers and cards.

Summary: a QR code lasts as long as its print and its page

Everything that can end a code sits in the print or in a service behind it, so checking those two places settles almost every case. The pattern has no timer, so the next step depends on where the code stands.

• A printed code stopped opening: read the link the camera shows, then restore the page, renew the dynamic plan or print a new static code.
• A code is about to go to print: make it static and point it at a page you own.
• A free code is on the table: a static one lasts like a paid one, while a free dynamic one follows the provider's terms.