OB Barcode generator

Create scan-ready codes in your browser, export as PNG or SVG, and keep your content private.

Generate Free Barcodes Online

Create linear barcodes and 2D codes instantly with no software installation. OB Barcode generator currently supports QR Code, Code 128, Code 39, EAN-13, and UPC-A with real-time preview, PNG/SVG export, and print-ready output.

The tool is designed for developers, small businesses, and operations teams who need fast code generation for websites, labels, inventory tags, and product workflows. You can also batch-generate printable label sheets from CSV in one click.

Data stays in your browser for generation. Review our Terms of Use and Privacy Policy for details.

Generate

Pro Workflow

Recent Codes

Shortcuts: Ctrl/Cmd + Enter to generate, Ctrl/Cmd + D to download PNG, Ctrl/Cmd + Shift + D to download SVG.

Live Preview

Print tip: prefer SVG for labels and posters to preserve sharp edges at any size.

Batch CSV and Label Sheet

CSV format: format,data per row. Example: EAN13,5901234123457

Deployment Readiness

Run a quick preflight before publishing to verify essential production checks.

    Advertisements

    Multiplex ad unit (autorelaxed) for bottom horizontal placement.

    Scan and Print Tips

    FAQs

    What is a Code 128 barcode?

    Code 128 is a high-density linear barcode format widely used for logistics, inventory, and internal tracking labels.

    How much data can a Code 128 barcode hold?

    Capacity varies by scanner and print quality, but Code 128 can hold full ASCII data and is efficient for alphanumeric identifiers.

    How to generate multiple Code 128 barcodes?

    Use the Batch CSV and Label Sheet section. Add one row per code then click Generate Label Sheet.

    Can I generate barcodes programmatically?

    This web app is browser-based. For automation workflows, you can use the same formats via scripts and barcode libraries in your own applications.

    Need help generating barcodes?

    Visit our Support page for troubleshooting and common setup guidance.