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Barcode generator
QR codes & barcodes //en/tools/barcode-generator
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About this tool
Choose a symbology and enter its data; numeric formats calculate or verify the check digit and produce a barcode with human-readable text.
Common uses
- Create labels for inventory, samples, or internal workflows.
- Test data and check digits for several barcode symbologies.
How to use it
- 1.Choose Code 128, Code 39, EAN, UPC, or ITF-14.
- 2.Enter text or digits that match the format hint.
- 3.Generate the barcode, then copy its data or download PNG / SVG.
Limits and notes
- Code 128 accepts printable ASCII text; EAN, UPC, and ITF-14 require defined lengths, and production labels should be tested with the target scanner.
Frequently asked questions
How are check digits handled?
Enter the body length and the tool calculates the check digit; enter a complete code and it verifies the final digit before generating.
What happens to lowercase Code 39 input?
Lowercase letters are converted to uppercase, and only characters allowed by Code 39 are retained.