Free Online UPC A Barcodes Generator

Generating & Printing UPC-A Barcode Images Online

Online UPC A Generator is developed based on OnBarcode .NET Barcode Generator Component.

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

Barcode Software & Libraries

OnBarcode provides professional barcode software and libraries for you.

QR Code Software & DLLs

OnBarcode provides QR Code software and libraries for you with outstanding quality.

UPC-A Software & Components

OnBarcode provides several UPC-A barcode generating component, library, and SDK for you.

  • ASP.NET UPC-A - examples to create, print barcodes in ASP.NET web applications / website & web form.
  • .NET UPC-A - sample codes to create ISSN bar codes in Visual Studio .NET projects.
  • C# UPC-A - simple Visual C# .NET sample code to print ISSN 1D barcodes in C#.NET applications.
  • VB.NET UPC-A - creating ISSN linear barcodes in Visual Basic. NET applications.


UPC-A Barcode Settings
Barcode Encoding Data
UPC-A supplement data (The value is 2 or 5 digits)
UPC-A supplement bar height
UPC-A supplement bar space with main bar

UPC-A Barcode Text Style
Show Text
Text margin  
Text Font Name
Text Font Size
Text Font Style
UPC-A Barcode Image Size Settings
Unit of Measure
X (bar module width)  
Y (bar module height)  
Left Margin  
Right Margin  
Top Margin  
Bottom Margin  
Resolution (in dots per inch)
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 is a market-leading provider of barcode imaging generator, reader controls and components for ASP.NET, Windows Forms, WPF, as well Java, Android, iOS (iPhone, iPad) across all major enterprise development platforms. OnBarcode barcode products are supported by RasterEdge high quality .NET Imaging SDK, Java Imaging Library, and their easy and simple documents, like imaging in C#, imaging in VB.NET.
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