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Guides, tips and news about QR codes.

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Published on 8/7/2026

QR Codes in Excel and Google Sheets: What Belongs in the Cell

The usual advice is a formula that pulls a code image from someone else's server. It works until it doesn't — and what it quietly creates is a spreadsheet full of pictures that keep pointing at addresses you have already changed.

Published on 8/7/2026

A QR Code in Your Email Signature: One Case Works, the Rest Are Decoration

Almost every guide says to add one. Almost none notice that the person reading your email is already holding a device with clickable links. There is exactly one situation where the code earns its space — and it is worth setting up properly.

Published on 8/7/2026

A QR Code API: What to Automate, and What Not To

Creating a code from your own system takes one POST. The design question worth more than the endpoint list is when a code should be created by software at all — and the answer is narrower than most integrations assume.

Published on 8/7/2026

Hundreds of QR Codes from One Spreadsheet — and How to Name Them

Generating 500 codes takes a minute. The part that decides whether the project works is what you put in the name column, because six months later that column is the only thing standing between you and 500 rows of numbers you cannot interpret.

Published on 8/7/2026

QR Codes for Events: From Save-the-Date to Feedback Form

One printed code can carry an event through its whole life — add-to-calendar before, the live schedule during, a feedback form after — plus what to put on badges, signage and tickets.

Published on 8/7/2026

The Code Worked for a Year, Then Stopped: A Field Diagnosis

A code that never scanned is a design problem. A code that worked and then failed is a different investigation — and the fastest way to narrow it down is the shape of the scan graph, not the square itself.

Published on 8/6/2026

The Digital Product Passport and the Code That Carries It

Europe is attaching a data carrier to physical products, and for most of them that carrier will be a QR code. The part worth planning now is not the passport — it is that the code has to outlive your website, your CMS and possibly your company's current domain.

Published on 8/5/2026

How to Make a QR Code Expire — and What Happens to the Print

A static code cannot expire: the address is inside the pattern, so it works until the page dies. Setting a date on a dynamic code is a different thing entirely — the code keeps resolving, and answers with a page you chose rather than an error.

Published on 8/5/2026

QR Codes and Accessibility: Who Cannot Scan, and What to Do About It

A printed code is invisible to a blind customer, unreachable from a wheelchair at the wrong height, and useless to anyone whose phone is old, dead or absent. Most of the fixes cost nothing — the biggest one is refusing to make the code the only route.

Published on 8/4/2026

QR Codes on Metal, Wood, Fabric and Curved Things

Paper is the easy case. Once a code is engraved, embroidered or wrapped around a bottle, one number decides whether it survives: the size of a single module — and every process loses modules in its own way.

Published on 8/3/2026

QR Codes on Wine Labels: What the EU E-Label Actually Requires

Since December 2023 a bottle has to carry its ingredients and nutrition, and a QR code is how most producers deliver them. The rule that changes the design: the e-label may not carry marketing and may not track the person scanning.

Published on 8/2/2026

QR Code for a YouTube Video: Where It Works, and Where It Is Wasted

Making one takes ten seconds, so the interesting question is not how. It is which link the code should carry, why a code inside the video itself is wasted, and how to keep printed material pointing at the right thing a year later.