Editing a QR code after printing: 4 real-life situations
· 7 min read
A poster is printed, put up, handed out. Two weeks later, a price changes, a date moves, a document is replaced. The paper stays exactly as it was.
The QR code printed on it can still lead somewhere else, provided it was set up for that. Here are four real-life situations: what you can fix without reprinting, what you cannot, and the questions to ask before choosing a tool. The advice applies whichever tool you use.
The principle in two sentences
A static QR code contains the final address directly: once printed, it always leads to the same place. A dynamic QR code contains a short address, managed by an online service, whose destination you change whenever you like; the printed code stays the same.
Above all, remember this: only the destination changes. Everything printed around the code (the text, the prices, the dates) stays as it is. That is what the advice below is built on.
Situation 1: the price changes on a poster
A music school puts up posters for its autumn classes, with the fees. In November, one fee changes. The posters are already up in the local shops.
What you can fix: if the code leads to a "Classes and fees" page, you update the page, or you change the code's destination to the new page. People who scan see the right price.
What you cannot fix: the price printed in large type on the poster. The code does not erase what is written next to it.
The right habit for next time: print what will not change (the name, the venue, the class days) and leave what may change to the code. A line such as "Up-to-date fees and times: scan here" stays true all year.
Situation 2: the PDF is replaced
A shop hands out a leaflet that links to its catalogue as a PDF. In spring, a new version comes out under a different file name.
With a static code that leads to the old file, there are two outcomes: the customer sees the old catalogue, or an error page if the file has been deleted.
With a dynamic code, you replace the destination with the new file. Depending on the tool, you can even change the type of content: the PDF can become a web page, a contact card or plain text, without touching the leaflet.
Points to watch:
- after every change, check on a phone that the right file opens;
- keep the file light, so it opens quickly even on a weak connection;
- prepare a version that reads well on a phone: a catalogue designed for A4 quickly becomes tiny on a screen.
Situation 3: the event is postponed
A community group prints leaflets for its street party. The code leads to the programme. The weather looks bad: the party is postponed by a week.
You change the destination to a page announcing the new date, or you update the programme. The leaflets already handed out are still useful, but the printed date is still the old one: announce the postponement at the very top of the page, before the rest of the programme.
For an event, plan from the start:
- a "Practical information" page that is easy to edit, rather than a fixed file;
- an invitation line that does not mention the date, for example "Programme and practical information: scan here";
- what comes next: after the event, point the code to the photos, a thank-you or the next edition, rather than to a page that no longer exists.
Situation 4: the daily menu
A restaurant puts table cards on its tables. The daily menu changes every day, the full menu every season.
Here, the code is not there to correct a mistake: it keeps up with content that changes all the time. Two approaches work: always keep the same address and replace its content, or use a dynamic code whose destination you change.
What you cannot change after printing
A dynamic code does not solve everything. These stay fixed:
- the code itself: its size, its colours, its position on the printed item. A code that is too small or low in contrast will stay that way;
- the text around the code: prices, dates, invitation lines;
- the service that manages the short address: if you switch services, the codes already printed still point to the old one.
So always test a proof at final size, from the actual scanning distance, with several phones, before going to print.
Questions to ask before choosing a service
A dynamic code depends on the service that manages it. Before printing, ask these questions, whoever the provider is:
- What happens to my code if I stop paying? Is it switched off, paused, deleted?
- Is it switched off at the end of the free trial? Some services switch codes off at the end of the trial period.
- Is there a scan limit, and what happens if I go over it?
- Can I change the type of content, or only the link?
- What statistics, and with what cookies for the people who scan?
- Where is the data hosted?
The answers should be clearly stated on the pricing page or in the FAQ. If you cannot find them, ask for them in writing.
Editing a QR code after printing with Scanoa
Scanoa creates dynamic QR codes: the printed code stays the same, and you change its destination at any time. You can change the link, change the type of content (for example from a PDF to text, a contact card or a website) or pause the code. From the Pro plan upwards, you can also schedule the code with a start date and an end date.
You see how many times your code is scanned, without tracking: the IP address is never stored and no cookie is set when scanning. Data is hosted in Europe.
The Free plan has no time limit: no trial period that switches off your QR codes. And if you stop paying: "Nothing is deleted. If you cancel, your workspace goes back to the Free plan: your oldest dynamic QR codes stay active up to its limit, the others are paused until you subscribe again. […] Static codes always keep working."
Frequently asked questions
Can you edit a QR code that has already been printed?
Not the pattern itself, but if the code is dynamic, you can change its destination. If it is a static code, you can still replace the content at the same address (same page, same file name). Otherwise, you need to reprint.
Does the printed code change when you change the destination?
No. The code contains a short address that does not change; the service redirects to the new destination.
How can I tell whether my QR code is static or dynamic?
Ask the person or the tool that created it. You can also scan it: if the address shown is a short address from a QR code service rather than your own website or file, it is probably a dynamic code.
Can an editable QR code be free?
Yes, within limits. With Scanoa, the Free plan includes 3 dynamic QR codes, no card needed. On the Free plan, beyond 1,000 scans in a month, your dynamic QR codes are paused until the 1st of the next month: people who scan them see a page saying they are temporarily unavailable. A paid plan reactivates them right away, with unlimited scans. Static QR codes are free and unlimited on every plan. To compare, see the pricing.
Print what will not change, leave what may change to the QR code, and choose a service whose rules you know before you print.
Create a QR code you can edit after printing. Free plan with 3 dynamic QR codes. No card needed.