Code 39 Barcode Generator
Encode text as a Code 39 barcode.
Code 39 encodes uppercase letters A–Z, digits 0–9 and the symbols - . space $ / + %. It's common in industry and ID badges. Generated locally in your browser.
Enter a value to generate the barcode.
Your input is processed locally in your browser and never uploaded.
How it works
- 1 Type uppercase letters, digits or supported symbols.
- 2 Customize colors and size.
- 3 Download a PNG or SVG.
Common use cases
- Create ID or badge barcodes.
- Label industrial and military items.
- Encode part or asset numbers.
- Generate simple alphanumeric codes.
Frequently asked questions
Is my input sent to a server?
No. The barcode is generated entirely in your browser — your input is never uploaded, stored or logged.
Which characters are allowed?
Uppercase A–Z, digits 0–9, and the symbols - . space $ / + %. Lowercase letters are not supported by Code 39.
Why is Code 39 wider than Code 128?
Code 39 is lower density (each character takes more bars), so it produces longer barcodes. Use Code 128 for compactness.
Is it really free?
Yes — free, with no signup, no watermark and no limits.