What is Data Matrix Generator?

Data Matrix Generator creates compact 2D barcodes that encode text, URLs, or serial numbers. Data Matrix codes are widely used in manufacturing, electronics, and healthcare for part marking and tracking.

Data Matrix codes are the small square barcodes you see laser-etched onto circuit boards, surgical instruments, and shipping cartons. The encoder produces square sizes from 10x10 up to 48x48 modules, plus a rectangular variant for narrow labels. A GS1 mode encodes Application Identifier strings with the required FNC1 separator for pharma and retail. Batch mode turns a numbered sequence or a pasted spreadsheet column into a ZIP of codes, and output is downloadable as a sharp PNG raster, a clean SVG vector, or a print-ready PDF.

How to use

1. Enter the text or data you want to encode in the input field.
2. Pick square or rectangle, set the size and scale, and optionally turn on GS1 mode for supply-chain element strings. Error correction is fixed by the spec, so there is nothing to tune there.
3. Download the generated Data Matrix as a PNG image, an SVG vector, or a print-ready PDF, or copy it for use in labels and documents.

When to use

• Marking small parts like chip packages where a QR code would not fit.
• Encoding GS1 product serials on pharmaceutical and medical-device labels.
• Labelling inventory with codes that still scan after smudging, scratches, or partial wear.

Result

Encode a product serial number like 'SN-2026-XJ9-44821' into a Data Matrix for laser etching on a circuit board.

FAQ

When should I pick Data Matrix instead of a QR code?

Data Matrix is denser and stays readable at much smaller print sizes — down to 2-3 mm square. Industrial scanners and assembly lines are built around it. QR is friendlier for phones, Data Matrix for machines and tight spaces.

What is the maximum amount of data I can encode?

A full-size 144x144 grid stores up to 2,335 alphanumeric characters or 1,556 bytes. The default square sizes here go up to 48x48 (around 1,558 characters) which is enough for serial numbers, URLs, and GS1 application identifiers.

Why is there no error-correction level setting?

Data Matrix uses Reed-Solomon error correction at a fixed rate set by the ECC 200 specification. Roughly 28 percent of the code can be damaged or missing and the scanner will still recover the data. Unlike QR, you do not choose the level.

When should I use the rectangular format instead of square?

Rectangular Data Matrix fits narrow strips — think the side of a syringe or the top of a small electronic component. The encoder supports the standard ECC 200 rectangle sizes (8x18, 8x32, 12x26, etc.) for those tight label areas.

What scale value should I use for printing?

For 300 DPI printers, a scale of 8-10 gives crisp modules with no aliasing. For direct part marking with a laser, scale 4-6 is enough because the engraver controls the actual physical size. SVG output ignores scale and lets the print tool resize freely.

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