Static vs dynamic QR codes: what's the difference?

A static QR code is just your data, encoded as a pattern of black and white squares. A static code that opens a website literally contains the URL. Because the pattern is the data, it can never change — you would have to print a new code.

Static codes are free forever and need no service to keep working, which is their main advantage.

A dynamic QR code encodes a short link such as yourdomain.com/r/ab12cd. That link lives in a database, and the person who created it can change where it points. The printed pattern never changes; only the destination does.

Because the request passes through a server, a dynamic code can also record a scan, route visitors by country or device, and pause the code entirely.

The choice usually comes down to one question: will this destination ever change, and do I need to know who scanned it?

A static code is free to create and free to keep. Nothing sits between the code and the destination, so there is nothing to renew and a print run is the only cost you ever pay.

A dynamic code usually carries a subscription, because somebody has to keep the redirect resolving. The honest comparison is not the monthly price against zero. It is the subscription against the cost of reprinting everything when a destination changes, plus whatever the scan data is worth to you.

Two details decide whether that price is fair: whether the free plan caps scans, and whether the redirect can run on a domain you own.

This is where the two formats really part company. A static code on packaging from 2015 still opens the same URL, because nothing had to stay online for it to work.

A dynamic code depends on its short link resolving. If the provider closes, the domain lapses, or the subscription is canceled, the printed code points at nothing — and by then it may be on ten thousand units.

The risk is manageable rather than fatal. Pick a provider that keeps codes resolving on its free tier, and keep the redirect on a domain you control so it can be moved later.

Use a static code for data that is truly fixed: a Wi-Fi password that never changes, a vCard, or a permanent homepage. Use a dynamic code for anything printed at scale, anything that might change, and anything you want to measure — menus, packaging, signage, campaigns and events.

You can also do both: create a dynamic code, print it, and keep the short-link domain under your control so the code keeps resolving even if you switch providers.