Generating EAN-13 & UPC-A Product Labels
Turn your registered GS1 GTIN-12 (UPC) or GTIN-13 (EAN) product numbers into scannable barcode graphics for packaging artwork and Amazon FBA labels.
Barcode Generator
Generate crisp, print-ready 1D linear barcodes for retail packaging, warehouse inventory, library books, and asset tracking. Choose from eight industry-standard symbologies — including Code 128, EAN-13, UPC-A, Code 39, and ITF-14 — with real-time check-digit validation and customizable dimensions.
Preview
How to Use the Barcode Generator
- 1
Enter the numeric or alphanumeric code that your barcode should carry.
- 2
Select the barcode symbology expected by your POS or warehouse scanner (e.g. Code 128 for general SKU labels, EAN-13 or UPC-A for retail).
- 3
Adjust the bar width multiplier and bar height in pixels to fit your label template.
- 4
Verify the live barcode preview and download the crisp PNG image for printing.
Practical Use Cases
Code 128 Internal SKU & Bin Location Labels
Create high-density alphanumeric Code 128 barcodes for warehouse shelf bins, internal part numbers, and packing slips.
Asset Tagging for Laptops & Books
Print sequential Code 39 or Code 128 asset tags to track loaned laptops, cameras, laboratory gear, and library inventory with a USB laser scanner.
Barcode Generator Features
Eight Industry Symbologies
Supports Code 128, Code 39, EAN-13, EAN-8, UPC-A, ITF-14, MSI, and Pharmacode.
Built-In Checksum Validation
Automatically validates character sets and Modulo-10 check digits before you print.
Customizable Bar Geometry
Fine-tune individual bar thickness and vertical height for thermal or laser labels.
Runs 100% in your browser
Nothing is uploaded to a remote server, so your data and files stay strictly on your device.
Free and unlimited
No account registration, no watermarks, and no daily usage caps.
Mobile and desktop ready
Responsive layouts and comfortable touch controls that fit phones, tablets, and desktops.
Technical Specifications & Best Practices
- ✓Code 128 is the most versatile format for internal inventory because it supports any ASCII character (letters, numbers, hyphens) of variable length.
- ✓Retail formats have strict digit rules: EAN-13 requires 12 data digits (+1 Modulo-10 check digit = 13), UPC-A requires 11 (+1 check digit = 12), and EAN-8 requires 7 (+1 = 8).
- ✓Always leave at least 3–5 mm of blank white space (quiet zone) to the left and right of the vertical bars so laser scanners can detect the start/stop patterns.
- ✓This tool renders the graphical barcode from your number; to sell products in major supermarkets, the underlying EAN/UPC number must be licensed from GS1.