QR Code vs Barcode: What's the Difference?
Barcodes and QR codes are both machine-readable images, but they’re built for different jobs.
The quick answer
- A barcode (the striped kind) is 1D — it stores data in the widths of vertical lines and holds a small amount, typically a number up to ~20–25 digits.
- A QR code is 2D — it stores data in a grid of squares, holding thousands of characters including links, text and structured data.
How they compare
| Barcode (1D) | QR code (2D) | |
|---|---|---|
| Data stored | ~20–25 characters | Up to ~4,000 characters |
| Reads | Left to right | Any direction |
| Error tolerance | Low | High (can recover ~30%) |
| Typical use | Retail SKUs, shipping | Links, Wi-Fi, payments, menus |
When to use which
Use a barcode when a scanner just needs to look up an item in a database — product checkout, inventory, ISBNs on books. The number in the barcode points to a record stored elsewhere.
Use a QR code when the code itself should carry the information or a link — a menu URL, a WiFi login, a contact card, or a UPI payment. QR codes also tolerate damage and smudging far better thanks to built-in error correction.
Scanning both
Modern phones read both formats. Our barcode scanner handles EAN, UPC, Code 128 and more, while the QR scanner works in every browser. Want to create a code? The QR code generator is the place to start.