A QR code on the packaging that will survive every reprint

Packaging gets printed by the tens of thousands and sits on shelves for months. A code that dies on it means a reprint running into five figures. This is precisely the case where choosing the right provider and code type matters most.

What goes behind a product's code

Instructions in several languages instead of a 40-page booklet. Recipes for a food product. Proof of origin, the safety sheet, the warranty form, customer service. And it changes over time: a new version, a new regulation.

• One dynamic code per product reference, or per batch
• CSV import: hundreds of codes in a single file, a ZIP with the images
• PDF hosted with us: the instructions display directly, with a download button
• Destination history for traceability
• Stats per reference: which product actually generates scans

Size, material, contrast

On packaging held in the hand, 2 cm is enough, but aim for 2.5 cm to make up for the curve of a bottle or a pouch. The code should sit on a flat area, on a light background, with no mirror-finish varnish. On kraft cardboard, choose black modules and check the contrast on an actual printed sample.

Why not use a free generator found online

Many "free" generators produce dynamic codes that stop working a few days later unless you subscribe. On packaging, that's a disaster. Scanolo commits in writing: a printed code keeps redirecting, even without a subscription. You can also export all your redirects at any time.

What about the GS1 2D barcode?

GS1 is preparing to replace the classic barcode with a 2D code ("Sunrise 2027"). A GS1 Digital Link QR code holds a structured link that includes the product's GTIN. Scanolo currently encodes whatever address you choose; if you use a Digital Link provided by your GS1 resolver, put it in a dynamic code like any other address.

Common mistakes

• Printing a static code with an address that's going to change: you'll have to reprint everything. Use a dynamic code as soon as the destination might evolve.
• Putting too large a logo in the center: past 30% of the width, even maximum error correction isn't enough.
• Inverting the colors (light modules on a dark background): a good share of phones fail to read it. Keep dark modules on a light background.
• Placing the code over a busy photo background or a heavy gradient: contrast drops and the scan becomes hit or miss.
• Printing without a test sample on the actual material.

Frequently asked questions