Online Barcode Generator

About This Free Online Barcode Generator

Generate high-quality barcodes instantly with our free online barcode generator. Perfect for retail, inventory management, shipping, logistics, and custom projects. All processing is 100% client-side — your data stays private and secure.

What Are Barcodes and Why Are They Used?

Barcodes are machine-readable representations of data, usually in the form of parallel lines or patterns. They allow fast and accurate identification of products, packages, assets, and documents using scanners.

Barcodes are used worldwide to improve efficiency, reduce errors, and automate processes in almost every industry.

Where and When Are Barcodes Used?

• Retail & Point of Sale (POS): Scanning products at checkout (EAN-13 and UPC are standard here).
• Inventory & Warehouse Management: Tracking stock levels, locations, and movements (CODE128 and CODE39 common).
• Shipping & Logistics: Labeling packages, pallets, and containers for carriers like UPS, FedEx, DHL (CODE128 widely used).
• Manufacturing & Supply Chain: Tracking parts, assemblies, and work-in-progress items.
• Healthcare: Patient wristbands, medication labeling, specimen tracking (CODE128 and CODE39).
• Libraries & Education: Book and asset identification.
• Event Ticketing & Access Control: QR codes are popular, but linear barcodes still used for tickets.
• Document Management: Labeling files, forms, and records.
• E-commerce: Generating barcodes for custom products or print-on-demand items.

Supported Barcode Formats & Their Best Uses

• CODE128: Most versatile. Encodes letters, numbers, and symbols. Best for shipping labels, inventory, healthcare, and any complex data.
• CODE39: Supports uppercase letters, numbers, and basic symbols. Widely used in industrial, automotive, defense, and logistics.
• EAN-13: 13-digit standard for retail products worldwide (outside North America). Use for books, groceries, electronics sold in stores.
• UPC-A: 12-digit standard primarily in the US and Canada. Standard for most retail products at checkout counters.

Key Features

• ✔ Instant generation with live preview
• ✔ Customizable size, colors, and text display
• ✔ Download as PNG, SVG, or PDF
• ✔ Recent history for quick reuse
• ✔ Input validation per format
• ✔ Light/dark theme
• ✔ 100% client-side – completely private
• ✔ Free forever – no signup needed

Whether you're labeling retail products with EAN-13/UPC, managing inventory with CODE39, or creating shipping labels with CODE128 — our tool helps you generate professional barcodes quickly and securely.