Blog
Guides and how-tos for barcodes and QR codes.
Barcode Types Explained: 1D, 2D and When to Use Each
From EAN-13 at the supermarket to QR codes on posters: the major barcode families, what they can store, and how to pick the right one for your product.
QR Code vs Data Matrix: Which 2D Barcode Should You Use?
Both are square black-and-white codes, yet they suit different jobs. Compare capacity, error correction, minimum size and typical use of QR and Data Matrix.
EAN-13 and UPC-A: A Practical Guide to Retail Barcodes
What the digits on a retail barcode mean, where GTIN numbers come from, and the printing rules that keep your product scannable at the checkout.
How to Create a QR Code for Free (Without Tracking Services)
A four-step workflow for creating a QR code that never expires: choose content, tune size and error correction, test a scan, and export for print or web.
Ready to make one?
The free generator runs entirely in your browser — 87 symbologies, SVG/PNG/PDF export, no sign-up.
Open the free generator →