Test a code before the print run

The five checks

1. 1
   Scan it with a real phone

   Not the preview on your screen. Print it at the size it will actually be and scan it with the phone camera, not a QR app.

2. 2
   Run it through the checker

   Paste the address into our free checker. It tells you whether the GTIN is valid, whether the page answers, and whether a resolver is behind it.

3. 3
   Read the page as a stranger

   Open what a shopper gets. Is it about this exact product, or a category page they have to search from?

4. 4
   Try it on a slow connection

   A shopper is standing in a shop on a weak signal.

5. 5
   Check the clear space on the proof

   Hold the printed proof and look at the white margin around the code. If the design crowds it, say so before the run.

• Open the free GS1 checker

  No account needed. Works on any provider's codes.

What you can still change afterward

A great deal, which is the point of a dynamic code. You can change where it goes, add links, rewrite the page, and point one batch somewhere different. What you cannot change is the web address printed inside the code.