Professional Barcode & Label Generator
Generate, design, and validate professional barcodes. 100% secure, private, and runs entirely in your browser.
The Professional Barcode Generator is a comprehensive tool designed for businesses and developers who need high-quality barcodes without compromising privacy. Unlike other online generators, all processing, including image generation and complex label rendering, happens entirely in your browser.
Versatile Symbologies
Support for all major industry standards: Code 128, Code 39, EAN-13, UPC-A, ITF, PDF417, and QR Codes. Each format includes automatic check digit calculation and strict validation to ensure your barcodes are scannable by professional hardware.
Premium Features for Professionals
- Batch Generator: Generate hundreds of barcodes at once from a list or numeric range and download them as a structured ZIP file.
- Label Designer: Create "print-ready" adhesive labels with custom titles, prices, and SKUs using our integrated visual compositor.
- Barcode Decoder: Reverse-engineer any barcode by uploading an image. Our client-side AI decodes the data without ever uploading the file.
- Industry Presets: Quickly jump-start your project with pre-configured settings for Retail, Logistics, or Warehousing.
FAQ — Professional Barcode & Label Generator
How to Use the Barcode Generator
-
Select your barcode type
Choose from 20+ symbologies in the Symbology dropdown: EAN-13 and UPC-A for retail, Code128 for logistics, QR for marketing, ITF-14 for shipping, and more. -
Enter your data
Type the value to encode in the data field. For numeric-only formats (EAN, UPC), enter the digits; for Code128, any alphanumeric string is valid. The barcode preview updates live. -
Customise and download
Adjust width, height, colors, and whether human-readable text is shown below the bars. Download as PNG, JPG, or SVG for print and digital use. -
Use batch mode for multiple codes
Switch to Batch Mode, paste one value per line, and click Generate. All barcodes are packaged into a downloadable ZIP file in seconds.
Example Output
Common barcode types and their typical applications:
| Symbology | Data Type | Typical Use | Example Value |
|---|---|---|---|
| EAN-13 | 13 digits | Retail product | 5901234123457 |
| Code128 | Alphanumeric | Logistics, inventory | ITEM-ABC-001 |
| UPC-A | 12 digits | North American retail | 012345678905 |
| ITF-14 | 14 digits | Shipping cartons | 10012345678902 |
| QR Code | Any text/URL | Mobile scanning | https://example.com |
Common Use Cases
Retail & E-Commerce
Generate EAN-13 or UPC-A barcodes for product packaging, shelf labels, and point-of-sale systems.
Logistics & Warehousing
Create Code128 or ITF-14 codes for shipping cartons, pallets, and warehouse inventory management systems.
Libraries & Archives
Label books, documents, and archival boxes with Code39 or Code128 barcodes for cataloguing and checkout tracking.
Events & Ticketing
Issue unique Code128 or QR barcodes for event tickets, access passes, and attendee registration systems.
Asset Management
Track computers, tools, furniture, and equipment with printed barcode labels for inventory audits.
How It Works
All barcode generation runs entirely in your browser — no data is ever uploaded to a server.
The tool uses bwip-js, a JavaScript port of the industry-standard BWIPP (Barcode Writer in Pure PostScript) engine, supporting 20+ symbologies with pixel-perfect accuracy.
Barcodes are drawn on an HTML5 canvas element and exported as PNG, JPG, or SVG. SVG output is vector-based and scales to any print size without quality loss.
For EAN-13, EAN-8, UPC-A, and ITF-14, the tool automatically calculates and appends the mandatory check digit, preventing scanning errors.
Who This Tool Is For
Retailers & Sellers
Generate EAN/UPC barcodes for product listings on Amazon, eBay, or your own online store.
Warehouse Managers
Create Code128 or ITF-14 labels for pallets, shelves, and inventory tracking.
Developers
Generate barcode assets for apps, printouts, or automated workflows via batch mode.
Event Organisers
Produce unique ticket barcodes that can be scanned at venue entry points.
Small Businesses
Label products, equipment, or files without purchasing expensive barcode software.
Tips for Better Barcodes
- For print, export as SVG — it scales to any DPI without pixelation, ensuring the scanner can read it reliably at any size.
- Always use high contrast: dark bars on a white or light background. Avoid colored backgrounds that reduce scanner reliability.
- Maintain the recommended quiet zone (blank margin) around the barcode — at least 10 times the narrowest bar width on each side.
- Test your barcode with a free scanner app before printing at scale to catch encoding errors early.
- Use batch mode when you need more than 10 barcodes — it generates all of them in one ZIP without repetitive manual work.
Why Standardised Barcodes Matter
- A single misread barcode can cause a mis-shipment, a pricing error, or a failed stock audit — costing time and money.
- International standards (GS1, ISO/IEC) require specific symbologies for retail and logistics; using the wrong type can prevent scanning.
- Professionally printed barcodes with correct quiet zones and check digits pass retailer compliance checks first time.
- Batch generation and label design in one tool eliminates the need for expensive dedicated barcode software.
Performance & Privacy
Every barcode is generated locally in your browser using the bwip-js library. No data you encode — product IDs, inventory codes, personal names — is ever sent to any server. The tool renders within milliseconds, works offline after the first visit, and requires no account or registration.
Educational Note: Barcode Symbologies
1D vs 2D Barcodes
1D barcodes (EAN, Code128) encode data as parallel bars and are read by laser scanners. 2D barcodes (QR, DataMatrix) encode data in a matrix and require camera-based readers.
GS1 Standards
The GS1 organisation manages global barcode standards. EAN-13 and UPC-A are required for all consumer products sold in regulated retail channels worldwide.
Check Digits Explained
Check digits are mathematically derived from the other digits in the code. Scanners verify the check digit to detect transmission errors and prevent mis-reads.
Quiet Zones
The blank space before and after a barcode (the "quiet zone") is as important as the bars themselves — without it, scanners cannot reliably detect the start and end of the code.
Troubleshooting
Did You Know?
The first product ever scanned with a barcode was a 10-pack of Wrigley's Juicy Fruit gum at a Marsh supermarket in Troy, Ohio on June 26, 1974. The barcode was a UPC-A symbol, and that same pack of gum is now on display at the Smithsonian National Museum of American History.
Professional Barcodes Without the Cost
Whether you need a single EAN-13 for a product listing or a thousand Code128 labels for a warehouse rollout, this free tool covers every scenario. With 20+ symbologies, batch generation, label design, and a built-in decoder — all running locally in your browser — it replaces expensive barcode software for most use cases. Generate your barcode now and get it right the first time.