Barcode Generator
Generates downloadable barcode images in formats like Code128, EAN-13, UPC and Code39.
Barcode details
Generated in your browser with bwip-js — nothing is uploaded.
Result
Enter a value and press Generate to see your barcode.
How to use this calculator
- Pick a barcode type and enter the value.
- Generate and download the PNG.
How it works
Renders the barcode locally with bwip-js. Each symbology has rules — EAN-13 needs 13 digits, UPC-A 12, while Code 128 accepts general text.
Worked example
Code 128. Encode any product code or reference as a scannable barcode.
Tips
- Runs entirely in your browser. Your input is not uploaded or stored.
Frequently asked questions
Why won't EAN-13 generate?
EAN/UPC need an exact number of digits and a valid check digit — use Code 128 for free-form values.
Privacy?
Runs entirely in your browser. Your input is not uploaded or stored.
Related tools
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Cite this tool
Zerdly. (2026). Barcode Generator. Retrieved from https://www.zerdly.com/tools/barcode-generator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.