POSTNET for large-format mail pieces
Mail-merge and print shops producing oversized envelopes or mail pieces use this generator when a taller bar height is more legible on larger stock.
Same generator, no special configuration
This experience uses the same POSTNET capability as the primary generator, with a fixed 15mm bar height ("height": 15) applied -- a value the primary's own typed height control can set directly, not a separate workflow.
Example data
The generator is seeded with a bwip-js-verified valid delivery-point code, distinct from the primary's example, that you can replace with your own.
Workflow
Enter your ZIP/ZIP+4/delivery-point digits, confirm the computed check digit, then export SVG for the mail piece.
Job-specific settings
No job-specific options beyond the fixed bar height are applied here.
Scanning notes
Keep clear white space above and below the bar pattern; POSTNET's short bars carry meaningful data and must remain distinguishable from the tall bars.
Common mistakes
Supplying the wrong digit count for the default (non-check-digit) mode is the most common rejection.
Standard
POSTNET is a USPS mail-automation barcode.
Related
For the newer 4-state barcode that has largely replaced POSTNET, use the USPS Intelligent Mail generator.