How is Data Matrix different from a QR code?

Both are 2D matrix symbologies, but they use different module patterns and finder markers, and most QR readers cannot decode Data Matrix. Data Matrix is typically used for very small, dense markings in electronics and pharma, while QR codes dominate consumer use like URLs on packaging.

ECC 200 is the Reed-Solomon error correction scheme used by modern Data Matrix symbols. It lets a scanner reconstruct the encoded data even if part of the code is damaged, smudged, or partially obscured.

Is this the same as the Code128 barcode generator on this site?

No. Code128 is a 1D linear barcode made of parallel bars. Data Matrix is a 2D square symbol made of small dots or squares, and it can pack far more data into the same physical space.

How much text can I encode?

This tool supports up to 500 characters. Data Matrix can technically hold more, but longer input produces a denser symbol that needs a higher-resolution scanner to read reliably.

Is my data sent to any server?

No. The Data Matrix symbol is generated entirely in your browser using JavaScript. Nothing you type is transmitted or stored anywhere.

Data Matrix Generator

Name: Data Matrix Generator
Availability: InStock
Author: Nham Vu

Type any text or URL and get a scannable Data Matrix (ECC 200) code you can download as a PNG.

Data to Encode

Text or URL

Module Scale: 5x

Enter text on the left to generate a Data Matrix code

Downloaded!

Summary

Type any text or URL and get a scannable Data Matrix (ECC 200) code you can download as a PNG.

How it works

Type or paste the text, URL, or serial number you want to encode.
The Data Matrix symbol renders automatically using ECC 200 error correction.
Adjust the module scale to make the code larger or smaller.
Click "Download PNG" to save the code to your device.

Use cases

Mark small electronic components where a QR code would not fit.
Print pharmaceutical packaging codes for track-and-trace compliance.
Label lab samples, circuit boards, or machined parts.
Encode serial numbers or asset tags for industrial scanners.
Generate test codes for Data Matrix reader development.
Add scannable codes to aerospace or automotive part marking.

Frequently Asked Questions

Last updated: 2026-07-21 · Reviewed by Nham Vu