C39 Barcode generator
Generate easy & customizable C39 Barcodes in seconds.
Generate a Code 39 barcode for asset and job labels
Code 39 is a straightforward barcode format often used for asset tags, internal labels, job tracking, simple inventory references, tools, equipment, folders, and operational documents. It is easy to generate and works well for many basic identification workflows.
Australian businesses can use Code 39 labels in workshops, warehouses, service vehicles, construction offices, clinics, schools, and back-office processes where staff need a quick way to scan an internal reference. The generator above creates a barcode image that can be tested and downloaded quickly.
Because Code 39 is less compact than some modern formats, it can become wide when encoding longer values. Keep references short where possible, and test labels at the size they will actually be printed. If you need denser alphanumeric codes, Code 128 may be a better fit.
How to use this generator
- Enter the asset, job, or internal reference code.
- Generate the barcode and test it with your scanner.
- Choose dimensions that fit the final label.
- Download the artwork for labels, documents, or signs.
Best practices
- Keep values short to avoid overly wide barcodes.
- Use a consistent prefix system for assets, jobs, or locations.
- Print labels with enough white space around the code.
- Switch to Code 128 when you need more compact encoding.
When should you upgrade to PRO?
PRO is useful when barcode labels need a digital companion. Add dynamic QR codes for asset manuals, job forms, quote requests, safety instructions, customer handovers, and scan analytics.
Frequently asked questions
What is Code 39 used for?
Code 39 is often used for asset labels, internal inventory, job tracking, and simple operational IDs.
Is Code 39 good for long values?
It can become physically wide. Code 128 is usually better for compact alphanumeric labels.
Can Code 39 be used without a checksum?
Many workflows use basic Code 39, but checksum requirements depend on the scanner and system.