Free Online Barcode Generator

Yes, completely free. No account required, no watermarks, no limits on the number of barcodes you can generate. Everything runs in your browser. It is one of the free browser-based tools at jasperbernaers.com.

For international retail (Europe, Asia, rest of world) use EAN-13 (13 digits). For North American retail use UPC-A (12 digits). Small packages that can't fit a full-size symbol can use EAN-8 or UPC-E.

Code 128 encodes the full 128-character ASCII set at high density. It is the most versatile linear barcode and is ideal for shipping labels, serial numbers, inventory tracking, and anywhere you need variable-length alphanumeric data.

Yes. The SVG download is a vector file that can be scaled to any size without loss of quality — perfect for print-ready label files, packaging artwork, or large-format printing. The PNG download is rasterized at screen resolution.

EAN-13 has 13 digits and is the international standard used in most countries. UPC-A has 12 digits and is the standard in North America. UPC-A barcodes are technically a subset of EAN-13 (with a leading zero). Most modern scanners read both interchangeably.

Your data never leaves your browser. The barcode is generated entirely client-side using the open-source JsBarcode library. No data is transmitted to any server.

ITF-14 (Interleaved 2-of-5, 14 digits) is used on outer packaging and shipping cartons to encode GTIN-14 product identifiers. It is designed to be readable even on lower-quality corrugated cardboard surfaces.

Pharmacode (Pharmaceutical Binary Code) is a barcode used exclusively in the pharmaceutical industry. It encodes a number from 3 to 131070 and is used on drug packaging to verify products on high-speed packaging lines.

A linear (1D) barcode like Code 128 or EAN-13 stores a short string read in one direction — ideal for retail checkout and logistics. A QR code is a 2D matrix that stores far more data (URLs, Wi-Fi credentials, contact cards) and is read by smartphone cameras. Need a QR code instead? Use the free QR code generator on this site.

Only for products sold through retail channels. Retailers require a GS1-issued company prefix so your EAN/UPC numbers are globally unique — you cannot invent retail numbers. For internal use (inventory, assets, tickets, membership cards, shipping references) you can generate any barcode freely with this tool at no cost.

The most common causes: too little quiet zone (empty margin) around the bars, printing too small or with low contrast, stretching the image (which distorts bar widths), an invalid check digit, or a scanner that doesn't support the symbology. Download the SVG, print at 100% scale in pure black on white, and leave a margin of at least 10× the narrowest bar width.

For retail EAN/UPC the nominal size is 37.29 × 25.93 mm, and GS1 allows 80–200% scaling. Never scale below 80% or truncate the height more than necessary — both reduce scan reliability. For Code 128 shipping labels, keep the narrowest bar at least 0.25 mm (10 mil) and the height at least 13 mm.

Camera-based (2D imager) scanners read barcodes from screens without problems — that's how digital boarding passes and loyalty cards work. Older laser scanners often fail on screens because of reflection and backlight. Increase brightness and barcode size if a screen scan fails.

Code 128 in almost all new projects: it is denser, encodes full ASCII and includes a mandatory check character. Code 39 survives in legacy automotive, defence (LOGMARS) and older inventory systems; choose it only when an existing system requires it.

An ISBN barcode is simply an EAN-13: select EAN-13 and enter your 13-digit ISBN (it already starts with 978 or 979) without hyphens. Optionally add an EAN-5 supplement for the price. Download the SVG for your cover designer.

Yes — the page accepts URL parameters, so you can script or bookmark barcodes: append ?data=YOURDATA&format=EAN13 (or CODE128, UPC, ITF14, …) to the page URL. Generate each barcode from a spreadsheet formula that builds the URL, open it, and download the file.