POSTNET and Planet Barcode Font Package POSTNET Barcode stands for POSTal Numeric Encoding Technique. It was developed by Postal Service for automatic mailpieces sorting.


POSTNET barcode always begins with a frame bar and ends with another frame bar. A correction character is required to be put in front of the right frame bar.


It is able to encode five-digit ZIP code, nine-digit ZIP and eleven-digit delivery point code.


Barcodesoft POSTNET barcode package contains 3 fonts: postnet, planet and envelope.


When printed at point size of 12, Barcodesoft POSTNET font character dimensions are indicated below:

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Full Bar Character Height:0.125 inch.

Full Bar Character Width :0.02 inch

Half Bar Character Height:0.05 inch.

Half Bar Width :0.02 inch