About Code-39
Code 39 (Code 3 of 9) is one of the oldest alphanumeric barcodes and remains the standard in industry, automotive (VDA), military (LOGMARS) and government. It needs no check digit and is read by every scanner.
Data format
Upper-case A–Z, digits, space and - . $ / + %.
Example: CODE-39
Linear Codes
One-dimensional barcodes consist of parallel bars and spaces of varying width. They are the industry standard for logistics, warehousing, inventory, tickets and product marking, readable by any laser or camera scanner.
Frequently asked questions about Code-39
Is the Code-39 generator really free?
Yes. You can create as many Code-39 barcodes as you like and download them as PNG or SVG – no registration, no watermark, commercial use included.
What resolution does the Code-39 barcode have?
PNG files are generated with adjustable module width and up to 600 DPI. For print we recommend the lossless SVG vector format which scales without any quality loss.
Is my data stored?
No. The barcode content is only processed to render the image and is not stored. We only count anonymously how often a barcode type is used.
Can I embed Code-39 barcodes in my website or software?
Yes. Every barcode has a stable image URL (see “Embed HTML”) which you can use in websites, label software or spreadsheets.