Mozaik

Code 39 Barcode Generator — Free, Alphanumeric

Code 39 is an older but still widely deployed alphanumeric symbology — simple, self-checking, and readable by almost any barcode scanner, common in automotive parts tracking, ID badges, and internal inventory.

Open the generator

How it works

  1. 1Enter up to 80 characters (letters, digits, and a limited symbol set).
  2. 2Optionally add a mod-43 checksum character.
  3. 3Export as SVG or PNG for labels or badges.

Frequently asked questions

What characters does Code 39 support?

Uppercase letters A–Z, digits 0–9, and the symbols `- . $ / + % ` and space — lowercase letters and other symbols aren't supported.

Is the checksum required?

No — Code 39 is self-checking by design, but some systems require an optional mod-43 checksum character for extra verification; Mozaik can add it if you need it.

Code 39 Barcode Generator — Free, Alphanumeric — Mozaik — Mozaik