Barcode Generator

About the Barcode Generator

This creates standard 1D (linear) barcodes — the striped codes on retail products, shelf labels, packaging, inventory tags and asset stickers. Enter a value, pick a format, and download a clean barcode as a PNG or SVG. It's useful for small businesses labelling stock, warehouses tagging assets, event organisers making tickets, or anyone who needs a scannable code without buying label software.

How it works — the formats

The barcode is drawn in your browser with the JsBarcode library. You can choose:

• Code128 — compact, encodes any ASCII text and numbers; the best general-purpose choice for internal labels.
• EAN-13 / EAN-8 — the retail product codes used worldwide (13 and 8 digits).
• UPC-A — the retail product code used mainly in North America (12 digits).
• Code39 — an older format for letters and numbers, common in industry and ID cards.

You can show or hide the human-readable value under the bars, and export as a PNG (for quick use) or SVG (vector, scales cleanly for print).

Assumptions and behaviour

• Each format has strict input rules, and the tool validates as you type — an invalid value shows an error rather than a broken barcode.
• EAN-13 expects 12–13 digits (it can compute the check digit), EAN-8 7–8 digits, UPC-A 11–12 digits; Code128 and Code39 are more flexible about content.
• The value is drawn as a proper barcode with a quiet-zone margin so scanners can read it.
• Show/hide of the printed value is your choice.

Limitations

• These are 1D barcodes, not QR codes. For a QR code (URLs, WiFi, contacts) use the QR Code Generator instead.
• Retail formats have fixed lengths and check digits. EAN/UPC codes must be the right number of digits, and a real retail barcode also needs an officially assigned GS1 company prefix — this tool draws a valid-looking code, but it can't register a genuine retail product number for you.
• Code39 is low-density and produces long barcodes for longer values; Code128 is more compact for general use.
• It generates the barcode image; it doesn't manage a catalogue, print label sheets, or assign numbers.

Privacy

Barcodes are generated entirely in your browser. Your values are never uploaded or stored.