Free Barcode Generator for Retail, Inventory & Shipping

A barcode is a machine-readable pattern of parallel lines (or, in newer formats, a grid of squares) that encodes a number or short string of characters so it can be scanned instantly by a barcode reader, point-of-sale system, or even a smartphone camera. For small retailers, warehouses, and product sellers, barcodes remain the backbone of inventory tracking and checkout speed — every item that moves through a shop shelf, a stockroom, or a shipping dock is far easier to track when it carries a scannable code instead of relying on someone typing in an SKU by hand.

Choosing the Right Barcode Format

Different industries and use cases call for different barcode standards, and picking the wrong one is a common reason a printed barcode gets rejected by a retailer or scanner. CODE 128 is the most flexible general-purpose format — it can encode letters, numbers, and symbols, making it a safe default for internal inventory labels, asset tags, or logistics tracking where you're not selling through a retail chain. EAN-13 and UPC-A are the two standards used at retail checkout counters worldwide — EAN-13 is the international standard (common across Europe, India, and most of the world), while UPC-A is used primarily in the US and Canada; if you're planning to sell a product through a retail store, you'll typically need to purchase an official EAN/UPC number from a barcode registrar such as GS1 rather than inventing one, since these numbers must be globally unique. CODE 39 is a older, simpler alphanumeric format still common in logistics, ID badges, and some inventory systems. ITF-14 is built specifically for shipping cartons and outer packaging, encoding a case-level identifier that's distinct from the individual product's barcode.

How to Use This Generator

Select the barcode format that matches your use case, type in the number or text to encode, and adjust the bar width, height, and whether the human-readable text appears below the bars. Thicker bars and taller heights scan more reliably from a distance or with older handheld scanners, while thinner bars fit more compactly on small product labels. Once generated, download the barcode as a PNG image to place directly into a label template, packaging design, or price tag.

Printing Tips for Reliable Scans

Print barcodes at 100% scale — resizing a barcode image in a document editor can distort the bar widths just enough to make it unreadable by some scanners. Use a high-contrast black-on-white color scheme; scanners are calibrated for this and colored bars or backgrounds often fail. Leave a clear quiet zone (blank margin) on both sides of the barcode, since scanners use that empty space to detect where the code starts and ends. For EAN-13 or UPC-A codes destined for retail shelves, always test a printed sample at an actual point-of-sale scanner before ordering a full batch of labels, since retailers will reject stock with barcodes that fail to scan reliably.

Common Use Cases

Retail product labeling for point-of-sale systems, internal inventory and stock-keeping labels for warehouses, asset tags for tracking equipment or tools, shipping carton labels for logistics and courier handoff, membership or loyalty card numbers, and event or ticket check-in codes.

Data Privacy and Cost

The barcode is rendered entirely in your browser — the number or text you enter is never uploaded to a server or stored. There's no cost, no sign-up, and no limit on how many barcodes you can generate.

Frequently Asked Questions

Can I use a randomly typed number as my product's EAN-13 or UPC-A barcode?

You can generate a valid-looking barcode with any number, but if you plan to sell through a retail chain or online marketplace, the number itself typically needs to be an officially registered code purchased from a barcode registrar like GS1, since these standards are designed to guarantee global uniqueness. For internal inventory tracking that never leaves your own business, an arbitrary CODE 128 or CODE 39 code works fine.

Why does my barcode fail to scan even though it looks correct?

The most common causes are printing the barcode at a scaled (non-100%) size, insufficient contrast between the bars and background, or too small a quiet zone around the edges. Try increasing the bar width and height settings and reprint a test sample before a full production run.

What's the difference between a barcode and a QR code?

A traditional barcode is one-dimensional (a series of parallel lines) and typically stores a shorter numeric or alphanumeric identifier, mainly used for retail and inventory lookups against a database. A QR code is two-dimensional and can store much more data directly in the pattern itself, including full URLs, text, or contact details, and is scanned by smartphone cameras rather than dedicated laser scanners. If you need to encode a website link or larger block of text, a QR code is the better fit — for retail SKU lookups, a barcode remains the industry standard.

Which format should I pick for shipping cartons?

ITF-14 is the standard built specifically for case-level shipping identifiers on cartons and outer packaging, and is what most logistics and courier partners expect for bulk shipments.