Generador de código de barras Code 39
Codifica texto como Code 39.
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.
Introduce un valor para generar el código de barras.
Tu entrada se procesa localmente en tu navegador y nunca se sube.
Cómo funciona
- 1 Type uppercase letters, digits or supported symbols.
- 2 Customize colors and size.
- 3 Download a PNG or SVG.
Casos de uso comunes
- Create ID or badge barcodes.
- Label industrial and military items.
- Encode part or asset numbers.
- Generate simple alphanumeric codes.
Preguntas frecuentes
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.