QRFable

QR code guides

Straight answers to the questions people actually ask before printing something they cannot take back.

Guides6 min read

What is the minimum size for a QR code?

One rule covers most cases, but density, surface and print quality all move the floor.

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Start here

What QR codes are, how they work, and what to know before you print.

Basics5 min

Do QR codes expire?

The short answer: static codes never expire, dynamic ones depend on the service behind them. The longer answer matters if you are about to print a thousand of something.

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Basics6 min

Static vs dynamic QR codes: which one do you need?

One is permanent and untrackable. The other is editable and depends on a service. Most guides sell you the second; here is when the first is genuinely better.

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Practical guides

Sizing, print settings and choosing a generator — the details that decide whether a code scans.

Guides6 min

What is the minimum size for a QR code?

One rule covers most cases, but density, surface and print quality all move the floor.

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Guides7 min

Why won't my QR code scan?

Nine causes, ordered by how often they are actually the problem, with the fix for each.

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Guides5 min

QR code blurry or pixelated when printed?

Why downloaded codes go soft in print, and the one download format that removes the problem entirely.

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Guides5 min

QR code works on iPhone but not Android (or the reverse)

One phone reads it, the other does nothing. The difference is nearly always what the code contains, not how it was made.

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Guides5 min

What size should a QR code be?

Most unscannable codes are not badly generated — they are badly printed. One ratio covers almost every case.

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Guides5 min

What to look for in a free QR code generator

Every generator is free until the moment you need the file. Here is what to check before you commit a design to print.

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By industry

How restaurants, shops and other businesses actually use QR codes day to day.

Industries6 min

QR code menus: what works and what annoys people

QR menus went from novelty to nuisance in about two years. The ones that still work share a few specific properties.

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Industries6 min

QR codes in retail: shelf edges, windows and packaging

The best-performing retail QR placement is the one that works when the shop is closed.

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Design

Styling codes so they look like your brand and still scan reliably.

Design6 min

How to put an image or logo inside a QR code

Error correction lets you cover part of a code. That tolerance is a budget, not a free pass.

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