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About This Tool
Generate standard 1D linear barcodes directly in your browser. Barcodes encode numeric or alphanumeric characters into parallel black lines and white spaces with defined quiet zones for optical barcode scanners.
The tool renders standard barcode symbologies using the open-source JsBarcode library: - EAN-13: 13-digit format used for retail goods and book ISBNs outside North America. - UPC-A: 12-digit standard used for retail products in the United States and Canada. - Code 128: Alphanumeric format commonly used on shipping cartons, logistics tracking, and warehouse shelf labels. - Code 39: Alphanumeric format used in manufacturing, automotive, and defense inventory.
For example, selecting EAN-13 and entering 9780132350884 renders a 13-digit book barcode with human-readable digits underneath. Clicking "Download SVG" saves a resolution-independent vector graphic suitable for packaging layouts, while "Download PNG" exports a raster image for label printing.
All barcode rendering executes client-side in your web browser. No product numbers, SKUs, or inventory data are transmitted to any server.
How to Use
- 1
Type or paste your barcode number or alphanumeric text into the input field.
- 2
Select your desired symbology format (EAN-13, UPC-A, Code 128, or Code 39) from the dropdown.
- 3
Inspect the live barcode preview and check that the digits displayed beneath match your input.
- 4
Click "Download SVG" for scalable vector graphic export or "Download PNG" for label printing.
Frequently Asked Questions
What format should I choose for retail merchandise?
Retail products sold in North America use 12-digit UPC-A, while products sold internationally use 13-digit EAN-13. Both require numbers from an official GS1 company prefix for global uniqueness.
Can Code 128 encode letters as well as numbers?
Yes. Code 128 supports full ASCII characters, including uppercase and lowercase letters, numbers, and symbols.
Does this generator transmit product data to a server?
No. Barcodes are rendered on-device with client-side JavaScript. Nothing is sent over the network.