Online Barcode Generator > Generate Intelligent Mail
This is barcode generator is designed for users to easily generate USPS Intelligent Mail (Onecode) linear barcodes in Jpeg, Gif and Png image formats free online. You can freely adjust various barcode parameters such as barcode size, rotation, resolution, image formats, text font etc. For more settings or barcode integration information, please navigate to other KeepAutomation barcode solutions here:


We are providing free online barcode generation service through url. You can generate barcode image in your web server through the following url:

To get this free online service, please contact us

Watch a quick video: how to get a free keycode and apply it?

Barcode Image Setting
SymbologyIntelligent Mail
Code to EncodeValid Input: 20, 25, 29 or 31 numeric digits
ChecksumEnabledSet true to add a checksum digit
Unit of MeasurePixel, Cm and Inch to select
X (Bar Width)Minimum is 1 pixel
Orientation0, 90, 180, 270 degrees to select
Image FormatPng, Gif and Jpeg available
Left MarginA 10x margin is pre-added as specified
Right MarginA 10x margin is pre-added as specified
Show TextSet true to display data text under image
Text Font SizeFont size of the human readable text
Unlock Keycode

Right click the barcode and select "save as" to save the image to your computer.

Intelligent Mail Barcode SDK Library
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Intelligent Mail for ASP.NET Intelligent Mail for VB.NET Intelligent Mail for Word Intelligent Mail for Reporting Services
Intelligent Mail for .NET WinForms Intelligent Mail for Java Intelligent Mail Font Intelligent Mail for RDLC Reports

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KeepAutomation Free Online Barcode Generator