Barcode Generator
Generate high-quality custom barcodes in seconds. Select from multiple barcode symbologies, customize sizes and colors, and download as PNG or SVG.
What are the Different Barcode Symbologies?
Barcodes translate characters and numeric digits into black-and-white patterns of varying widths. There are dozens of barcode standards, called symbologies, developed for specific industrial applications:
- CODE128: A high-density, versatile, and compact barcode format. It encodes all 128 ASCII characters, making it perfect for shipping labels, logistics, and inventory management. It automatically compresses numeric digits in pairs to save horizontal space.
- CODE39: An older, simpler symbology used heavily by the US Department of Defense and automotive industries. It encodes uppercase letters, digits, and a few special symbols. Unlike CODE128, it has no built-in checksum constraint by default and takes up more space.
- EAN-13 & UPC-A: These are the standard barcodes found on retail products worldwide. UPC-A is standard in North America (12 digits), while EAN-13 is standard globally (13 digits). They only encode numbers.
- ITF-14: Stands for Interleaved 2 of 5. It encodes exactly 14 digits and is commonly printed on outer shipping cartons, designed to handle rougher printing conditions.
100% Offline Generation & Customization
Unlike other generator websites, our tool performs barcode rendering completely client-side in your browser. This means your private inventory data, product codes, or identification credentials are never uploaded to our servers. You can easily adjust the line weight, quiet margins, height, colors, and font rendering, then export clean vectors (SVG) for professional printing or compressed images (PNG) for office applications.
Frequently Asked Questions
We support CODE128 (auto-configured), CODE39, EAN-13, EAN-8, EAN-5, EAN-2, UPC-A, UPC-E, ITF-14, MSI, Pharmacode, and Codabar symbologies.
No. The barcode generation is computed entirely in your browser using client-side JavaScript (JsBarcode). Your input data remains strictly confidential and offline.
Different barcode formats have strict rules. For example, EAN-13 requires exactly 12 or 13 numeric digits, UPC-A requires exactly 11 or 12 numeric digits, and CODE39 accepts only specific alphanumeric characters. If your input does not match the specifications of the chosen format, the generator will show an error.