Barcode generator Code 39

Code 39 barcode generator

Older industrial, automotive and government labels, ID badges and some library systems. Type your data and download a sharp SVG or a 300 dpi PNG. Every barcode is read back by a scanner library before you get it.

Capital letters, digits, spaces and - . $ / + %. Start and stop marks are added for you.

Code 39: the facts

What it holds: Capital letters, digits, spaces and - . $ / + %. Start and stop marks are added for you.
Where it is used: Older industrial, automotive and government labels, ID badges and some library systems.
Print size: Wider than Code 128 for the same text; at least 0.5 in tall.
What breaks it: Lowercase letters (not allowed) and long text, which gets very wide. For new systems Code 128 is usually better.

Questions

Why are my lowercase letters capitalised?

Standard Code 39 has no lowercase. We convert to capitals so the barcode stays readable everywhere.

Code 39 or Code 128?

Code 128 if you are starting fresh: it is narrower and holds more characters. Code 39 when an existing system asks for it.

Does Code 39 need a check digit?

It is optional and most systems do not use one.

Other barcodes

Need people to scan it with a phone camera? A QR code opens on every phone, can be made into art and can change its link after printing. See pricing.