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Free Online Barcode Generator (CODE128, EAN-13, UPC-A)

Create high-precision 1D and 2D barcodes online with OmegaTools Free Barcode Generator. Generating industry-standard barcodes for retail products, shipping packages, library catalogs, and warehouse inventory usually requires proprietary software. Our browser-based generator outputs compliant Code 128, EAN-13, UPC-A, Code 39, and ITF barcodes with customizable dimensions, quiet zones, and text labels directly on your device.

Standard alphanumeric text supported for CODE128.

How to Use This Tool – Barcode Generator

01

Choose Barcode Symbology

Select your required barcode standard: Code 128 (general inventory), EAN-13 (global retail), UPC-A (North America), or Code 39.

02

Enter Barcode Value

Type your numerical or alphanumeric product data, verify checksum integrity, and configure bar width and display text.

03

Download Print-Ready Barcode

Download your crisp, high-resolution barcode image in PNG or SVG format, ready for thermal label printing and product packaging.

Why Use Our Barcode Generator

Multiple Industry Standards

Complete support for Code 128, EAN-13, UPC-A, Code 39, ITF-14, and MSI Plessey barcode specifications.

Accurate Optical Scanning

Adheres to strict quiet-zone spacing and optical contrast standards to ensure reliable scanning on laser and CCD scanners.

100% In-Browser Privacy

Barcode rendering executes locally on your machine; your proprietary inventory SKU codes are never sent to external servers.

Scalable Vector SVG Export

Export crisp vector graphics that scale cleanly to any packaging size without pixelation or scanning distortions.

Common Use Cases – Barcode Generator

Indispensable for small manufacturers printing product barcodes for retail distribution, warehouse teams labeling inventory bins and pallets, e-commerce sellers generating shipping labels, and librarians cataloging books and media items.

Frequently Asked Questions

Which barcode format should I choose for retail products?
For retail products sold globally, use EAN-13 (13 digits). For retail items sold primarily in the United States and Canada, use UPC-A (12 digits).
Can Code 128 barcodes encode letters as well as numbers?
Yes. Code 128 is a high-density alphanumeric symbology capable of encoding all 128 ASCII characters, making it ideal for shipping, inventory, and asset tracking.
Will barcodes generated with this tool scan reliably on physical scanners?
Yes. Our generator produces clean, standardized bar-and-space dimensions with compliant quiet zones, ensuring reliable reads across handheld laser and camera scanners.
Can I print these barcodes using a thermal label printer?
Yes. You can export high-resolution PNG or SVG graphics that print with sharp contrast on Zebra, Dymo, Brother, and standard desktop printers.
Is there any fee or account required to generate barcodes?
No. OmegaTools Barcode Generator is 100% free with unlimited barcode creation and zero subscription paywalls.

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