Free USPS POSTNET barcode generator
Create a scannable USPS POSTNET symbol right here in your browser. Legacy US mail routing by ZIP code; new US mail uses Intelligent Mail instead. Download it as PNG, SVG or PDF — no signup, no watermark, and nothing you type leaves your computer.
USPS POSTNET settings
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USPS POSTNET specification
| Type | 1D linear barcode |
|---|---|
| Character set | numeric |
| Length | 5, 9 or 11 digits |
| Check digit | modulo-10 correction digit, added for you |
| Standard | USPS-B-3200 (retired for new mail) |
| GS1 symbology | No |
Where USPS POSTNET is used
Legacy US mail routing by ZIP code; new US mail uses Intelligent Mail instead.
Printing USPS POSTNET on a thermal printer
A generated image is fine for a one-off. For a production run you want the barcode rendered by the printer at its own resolution, sized in whole dots so the narrow bar lands on an exact dot boundary. LabelInn does that on Zebra, TSC, Toshiba and Epson hardware, and it can drive one label per row straight from your data.
Frequently asked questions
Is this USPS POSTNET generator really free?
Yes. The generator runs entirely in your browser, there is no signup, and the downloads carry no watermark.
Does my data get uploaded anywhere?
No. The symbol is encoded locally in your browser. Nothing you type is sent to a server.
What can USPS POSTNET encode?
numeric. Length: 5, 9 or 11 digits. Check digit: modulo-10 correction digit, added for you.
Can I print USPS POSTNET labels in bulk from a spreadsheet?
Not from this page — this tool makes one symbol at a time. LabelInn binds a spreadsheet column to the barcode field and prints one label per row on a thermal printer.
Printing USPS POSTNET labels in production?
This generator makes one symbol. When you need a batch — one label per row from a spreadsheet, a database or your API — LabelInn renders USPS POSTNET natively on the printer at its own resolution.
Download free Print labels from an Excel file