Free Online EAN 13 Barcodes Generator

Generating & Printing EAN-13 Barcode Images Online

Online EAN 13 Generator is developed based on OnBarcode .NET Barcode Generator Component.

NOTE

We are providing free online streaming barcode generation service. Now you can generate barcode image through the following url:

http://generator.onbarcode.com/linear.aspx?TYPE=4&DATA=123456789

To get this free online service, please contact us support@onbarcode.com

Watch a quick video tutorial and get started

NOTE

The barcode generator is locked, and you cannot change barcode settings. To unlock it, please go to our YouTube online barcode generator video description section to get the free keycode.

Free barcode generator online video tutorial:
https://youtu.be/hs_ZME55p2Q

EAN-13 Barcode Settings
Type:
Barcode Encoding Data
EAN-13 supplement data (The value is 2 or 5 digits)
EAN-13 supplement bar height
EAN-13 supplement bar space with main bar

EAN-13 Barcode Text Style
Show Text
Text margin
Text Font Name
Text Font Size
Text Font Style
Text Color

Barcode Colors
Back Color
Fore Color

Unlock Keycode
Code

EAN-13 Barcode Image Size Settings
Enable Auto Resize
Bar Alignment
Unit of Measure
X (bar module width)
Y (bar module height)
Left Margin
Right Margin
Top Margin
Bottom Margin
Resolution (in dots per inch)
Rotate
Barcode Image Width (if image width is smaller than the barcode minimum width, the setting will be ignored)
Barcode Image Height (if image height is smaller than the barcode minimum height, the setting will be ignored)
Image Format

Online Barcode Generator Supporting Bar Code Types

OnBarcode barcode products

OnBarcode also provides the following libraries and components for generating, printing, scanning, and reading EAN 13 barcodes.

Barcode Software & Libraries

OnBarcode provides professional barcode software and libraries for you.

.NET Barcode Generator - download free generator trial to create linear, 2D barcodes in various .NET applications.
.NET Barcode Generator Guide - generate 1D, matrix barcode images in .NET, ASP.NET Web site, WinForms, Class Library with source code available.
ASP.NET Barcode Generator - create, stream high-quality barcode images in ASP.NET web projects (web site, web form).
ASP.NET Barcode Generator Guide - how to stream 1D, matrix barcodes in ASP.NET web projects aspx / html pages.
.NET WinForms Barcode Generator - create Interleaved 2 of 5 and other linear, 2D barcodes in .NET Windows applications.
C# Barcode Generator - how to create linear, 2D barcodes in .NET C# applications with C# sample codes.
VB.NET Barcode Generator - how to generate barcode images in .NET applications using Visual Basic .NET sample codes.
.NET Barcode Reader - read, scan barcode images in .NET applications using Visual C# or VB.NET sample codes.
.NET Barcode Reader Guide - how to read, scan barcode images in .NET projects with Visual C#, VB.NET, ASP.NET.

QR Code Software & DLLs

OnBarcode provides reliable & mature QR Code software and dlls for you.

QR Code Reader in Java - how to scan, read QR Code barcode in Java class, iReport, Jasper Report with samples.
QR Code Reader in .NET - how to read, decode QR Code barcode in ASP.NET, C#, VB.NET with examples.
QR Code in C# - how to create, generate QR Code 2D barcode in Visual C# projects with samples.
QR Code in VB.NET - how to create, generate QR Code barcode in VB.NET applications with samples.
QR Code in ASP.NET - how to generate, stream Quick Response barcode in ASP.NET web applications with samples.
QR Code in .NET WinForms - how to create, generate QR Code barcode in .NET Windows Forms with examples.

EAN-13 Software & Components

OnBarcode provides other EAN-13 barcode generator library, component and SDK for you.

EAN-13 .NET - detailed tutorial to generate, create Code 11 linear barcode imags in .NET applications.
EAN-13 Java - detailed tutorial to show how to create, generate Code 11 1D barcdoes in Java class, iReport, Jasper Report.
EAN-13 ASP.NET - detailed ASP.NET tutorial to generate, print EAN-13 barcode images in Visual C# applications.
EAN-13 VB.NET - detailed VB.NET tutorial to print, generate EAN-13 barcodes in Visual Basic .NET projects.

How to Generate free EAN-13 Barcode online?

This comprehensive guide provides a step-by-step, web-optimized approach to generating, customizing, and validating EAN-13 (a 13-digit linear barcode symbology developed by GS1, used globally for product identification) in online web browser and web application. It covers core EAN-13 requirements, quick generation workflows, add-on symbols, human-readable text customization, advanced web-specific settings, and check digit verification.

EAN-13 Barcode Add-on Symbols

EAN-13 barcodes can include a 2-digit or 5-digit add-on symbol, which is positioned after the right quiet zone of the main symbol. This feature is useful for web-based applications like e-commerce (weight, price) and inventory management (batch numbers).

Set the Type property to match the add-on length:

EAN13 Supplement 2 for 2-digit add-on symbols
EAN13 Supplement 5 for 5-digit add-on symbols

Note: The add-on data must match the selected Type (2 digits for EAN13 Supplement 2, 5 digits for EAN13 Supplement 5). Mismatched lengths will cause errors in web-based generation.

EAN-13 Human-Readable Text for Web UI

The GS1 System recommends using the OCR-B font (a monospaced font designed for optical character recognition) for the human-readable text (digits below the EAN-13 barcode). This ensures compatibility with web-based scanning systems and meets industry standards.

Advanced EAN-13 Customization for Online Web Applications

The OnBarcode online free barcode generator offers advanced settings to customize EAN-13 barcodes for optimal web display and scanning. These settings are tailored to enhance compatibility with web UIs and online scanning systems.

ShowQuietZoneIndicator: Controls whether to display or hide the quiet zone indicator (marks at the ends of the barcode). Default value is true; disable it for a cleaner web UI.
UPCEANLeadDigitSpace: Adjusts the space between the first digit and the start character bar. Default value is 0; increase it for better web readability.
UPCEANTrailDigitSpace: Adjusts the space between the stop character bar and the quiet zone indicator. Default value is 0; increase it for better web readability.

Customizing Quiet Zone Indicator

The quiet zone indicator is displayed by default, but you can hide it for a more streamlined web UI.

Customizing Digit Spacing

Adjust the spacing between the first digit and start bar, and between the stop bar and quiet zone indicator, for improved web display.

Note: Avoid excessive spacing, as it may distort the barcode's proportions and affect scanning reliability in online web environments.

EAN-13 Check Digit Verification

The EAN-13 check digit is a critical component for ensuring data accuracy in web-based applications. It is calculated using a module 10 algorithm, which validates that the 13-digit EAN-13 code is correct.

The check digit is the 13th digit of the EAN-13 code (calculated from the first 12 digits).
It uses a module 10 calculation to detect errors in web-based data entry (e.g., typos in product IDs).
Example: For the 12-digit data "123456789012", the correct check digit is "8", resulting in the 13-digit EAN-13 code "1234567890128".