A barcode is a machine-readable representation of data in the form of parallel lines of varying widths. It is used to identify products, track inventory, and automate data entry in retail, logistics, and manufacturing industries.

How do barcodes work?

Barcodes encode data in patterns of lines and spaces. When scanned by a barcode reader (laser scanner or camera), the pattern is decoded to retrieve the stored information, typically a product number or identifier that links to a database.

What are the different types of barcodes?

Common barcode types include: CODE128 (alphanumeric, widely used), EAN-13/EAN-8 (European Article Number for retail), UPC-A/UPC-E (Universal Product Code for retail), CODE39 (alphanumeric), ITF-14 (shipping containers), and DataMatrix (2D barcode).

How to create a barcode?

To create a barcode: Choose the barcode format (CODE128, EAN, UPC, etc.), enter the data to encode, select size and format options, generate the barcode, and download it as an image file (PNG, SVG) for printing or digital use.

Are barcodes free to use?

Barcode generation is free, but some barcode formats (like EAN/UPC for retail products) may require registration with GS1 for official product identification. For internal use, inventory tracking, or non-retail purposes, you can generate barcodes freely.

Can barcodes be tracked?

Barcodes themselves don't track, but the data they encode can be linked to tracking systems. When scanned, the barcode number is looked up in a database that can track inventory, sales, location, and other information associated with that identifier.

What is the difference between QR code and barcode?

Barcodes are one-dimensional (lines) and store limited data (typically numbers). QR codes are two-dimensional (squares) and can store much more data including text, URLs, and multimedia. QR codes can be scanned from any angle, while barcodes require proper alignment.

Barcode Generator

Generate barcodes instantly for products, inventory, and more. Support for multiple barcode formats.

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Bulk Barcode Generator

Generate multiple barcodes at once

Barcode Settings

Barcode Type

Barcode Value

Enter alphanumeric text

Display Text

Hide

Show

Toggle to show or hide text below barcode

Line Width (1-5)

Barcode Height: 100 px

Barcode Scale: 2

Barcode Color

Background Color

Barcode Preview

Your barcode will appear here

Barcode generator tool - Create EAN-13, UPC-A, ISBN, CODE128, CODE39 barcodes online for free. Professional barcode maker for products, inventory management, and retail businesses.

Free Online Barcode Generator

Use this free barcode generator to create professional barcodes instantly. Our tool supports multiple barcode types including EAN-13, UPC-A, ISBN, EAN-8, UPC-E, Interleaved 2 of 5 (I25), Standard 2 of 5 (S205), POSTNET, CODABAR, CODE128, CODE39, CODE93, and QR Code.

Common Barcode Format Rules:

EAN-13: Must be exactly 13 digits
UPC-A: Must be exactly 12 digits
ISBN: Must be 13 characters and start with 978
EAN-8: Must be exactly 8 digits
UPC-E: Must be exactly 12 digits (compressed format)
Interleaved 2 of 5 (I25): Even number of digits required
Standard 2 of 5 (S205): Even number of digits required
POSTNET: 5, 9, or 11 digits
CODABAR: Start and end with A, B, C, or D
CODE128: Alphanumeric, any length
CODE39: Alphanumeric, uppercase only
CODE93: Alphanumeric, any length
QR Code: Any text, URL, or data

How to Use

Select the barcode type (format) you need
Enter the barcode value (numbers or text depending on format)
Adjust display options and size if needed
Click "Generate Barcode" to create your barcode
Download or right-click to save the barcode image

Barcode Format Guidelines:

CODE128: Alphanumeric, any length
EAN-13: Exactly 13 digits
EAN-8: Exactly 8 digits
UPC-A: Exactly 12 digits
CODE39: Alphanumeric, uppercase only
ITF-14: Exactly 14 digits

What is a Barcode Generator?

A barcode generator is a tool that creates machine-readable barcodes containing product information, inventory codes, or identification numbers. Barcodes are essential for retail, inventory management, logistics, and product tracking. They enable quick scanning and data entry, reducing errors and improving efficiency in businesses of all sizes.

Our free barcode generator supports multiple barcode formats including CODE128, EAN-13, EAN-8, UPC-A, CODE39, and ITF-14. You can customize the size, line width, and display options to create barcodes suitable for printing on product labels, packaging, invoices, or any business document.

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Free Barcode Generator Online

Our barcode generator is completely free with no registration required. You can:

Generate unlimited barcodes for free
Support for 6+ barcode formats
Download high-quality barcode images
Use for commercial purposes
Customize size and appearance

Barcode Types and Formats

Different barcode formats serve different purposes:

CODE128: Alphanumeric, most versatile, used for shipping and logistics
EAN-13: 13-digit European Article Number, standard for retail products worldwide
EAN-8: 8-digit version for small products
UPC-A: 12-digit Universal Product Code, common in North America
CODE39: Alphanumeric, used in automotive and defense industries
ITF-14: 14-digit Interleaved 2 of 5, used for shipping containers

Barcode Generator for Products

Product barcodes are essential for:

Retail inventory management
Point-of-sale (POS) systems
Product identification and tracking
E-commerce product listings
Warehouse management
Supply chain tracking

Use EAN-13 or UPC-A format for retail products, as these are the most widely recognized standards for product barcodes.

How to Print Barcodes?

For best printing results:

Use high-resolution settings (300 DPI minimum)
Print on white or light-colored backgrounds
Ensure sufficient contrast (black bars on white)
Test scan before printing large quantities
Use appropriate size for your application
Consider barcode label printers for professional results

Barcode Scanner Compatibility

Our generated barcodes are compatible with:

All standard barcode scanners
Smartphone barcode scanner apps
POS systems and cash registers
Inventory management software
Mobile scanning devices

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