Online Barcode Generator > Generate POSTNET
This is barcode generator is designed for users to easily generate POSTNET 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
Code to EncodeValid Input: 5, 9 or 11 numeric digits
Unit of MeasurePixel, Cm and Inch to select
X (Bar Width)Minimum is 1 pixel
ShortTallRatioShort bar height / Tall bar height
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

Checksum digit is automatically calculated and added!

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

POSTNET Barcode SDK Library
POSTNET for .NET POSTNET for C# POSTNET for Excel POSTNET for Crystal Reports
POSTNET for ASP.NET POSTNET for VB.NET POSTNET for Word POSTNET for Reporting Services
POSTNET for .NET WinForms POSTNET for Java POSTNET Font POSTNET for RDLC Reports

If you find KA.Online POSTNET Barcode Generator useful,
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KeepAutomation Free Online Barcode Generator