Free Barcode Generator

To create a barcode image for your product, choose the type of barcode, enter your barcode data, select the barcode size, and select generate barcode. Our tool instantly converts your data into a scannable barcode image you can download and use in your label design. If you're generating a UPC for the first time, you'll need to provide your unique product identifier from GS1.

Most retail-ready barcodes should be between 1.25" and 2" wide with a minimum height of 0.5" to ensure accurate scanning. The most important factor is maintaining the quiet zone, which allows scanners to read your barcode correctly. If you're unsure about the best size, consider where the label will be applied and how the product will be handled.

The barcode type you choose depends on how your product will be sold or used:

UPC-A: Required for most retail products in the United States.
UPC-E: A compressed version of UPC-A for smaller packaging.
Codabar: Used in medical, memberships, and library systems.
PostNet: Designed for U.S. postal routing (primarily legacy use).
Code 39: Common for asset tags, internal identifications, and non-retail applications.
EAN-13: Standard for retail products sold internationally.
EAN-8: A shorter EAN format designed for small packages.
Code 128: Commonly used for internal inventory, asset tracking, or logistic labels.
Interleaved 2 of 5 (ITF): Used on distribution cases, cartons, and warehouse logistics.

The most commonly used barcode types are UPC-A, EAN-13, and Code 128.

Yes. Each variation requires its own unique UPC. Retailers and fulfillment systems rely on separate identifiers to track inventory accurately and prevent errors during checkout or shipping.

Our UPC generator creates one barcode at a time. If you need multiple barcodes, you can generate and download each individually, or use our Maestro Label Designer Mail Merge Features to generate multiple codes.

A barcode contains only the numeric or alphanumeric code that identifies your product, such as UPC, EAN, SKU, lot number, or internal tracking code. Product names, pricing, and additional details are not within the barcode itself; these elements are typically printed elsewhere on the label.

Absolutely. After creating your barcode, you can download the image and place it directly into your label design before printing. OnlineLabels offers both printable barcode sheet labels and custom barcode label printing, allowing you to have your codes professionally printed and ready to apply.

Yes. Our barcode generator is free. You can create unlimited barcodes, download files, and add them to your label designs at no cost.

A barcode generator is an online tool that converts a number into a readable barcode image. When you enter your number and type, our tool formats the barcode according to industry standards and generates a downloadable image file that you can use to place on your labels or packaging.

Barcodes typically fail to scan when they're printed too small, stretched, low-contrast, or placed on a curved surface. Ensure the image prints at full resolution with a proper quiet zone and high contrast. Printing a small test label first can help confirm readability before printing large batches.