Barcode Generator

Postnet barcode generator

Legacy USPS (United States) postal code. ZIP code of 5, 9 or 11 digits.

Terms of use: this site only turns the data you type into a barcode; it does not create, verify, register or store that data, and nothing is sent to any server. The content you enter and the use of the generated barcodes are solely the user's responsibility, including the right to use GTIN/EAN numbers (licensed by GS1), the accuracy of the information and compliance with applicable law. Links with dangerous schemes and typical attack patterns (scripts, SQL injection) are blocked, but this does not replace your own checks. By using the generator you accept these terms.

One barcode per line, up to 50 at once.

Size
Appearance

Preview

PDF and AI are vector files in CMYK, with black as C0 M0 Y0 K100. PNG, JPG and SVG are RGB.

Test every barcode before use. The user is solely responsible for the accuracy of the barcode.

Postnet specification

POSTNET (Postal Numeric Encoding Technique) was used by the US Postal Service (USPS) to encode the ZIP Code. Instead of widths, it uses tall and short bars.

  • Content: 5, 9 or 11 digits (ZIP, ZIP+4 or delivery point).
  • Each digit has 5 bars, 2 of them tall. A check digit (modulo 10) is added automatically.
  • Bar height is fixed by the standard. Since 2013 USPS uses the Intelligent Mail Barcode (IMb) instead of POSTNET.

How to use

  1. Type the content. To create several barcodes, put one per line.
  2. Adjust size, height, margin and colors. The preview follows every change.
  3. Download each barcode in the format you need, or all of them as a ZIP.

This symbology has dimensions fixed by its standard: PDF, SVG and AI are produced at real size. PNG and JPG use the chosen pixel resolution. If your printer warns about ink spread, increase the bar width reduction.

Frequently asked questions

What is a Postnet barcode?

POSTNET (Postal Numeric Encoding Technique) was used by the US Postal Service (USPS) to encode the ZIP Code. Instead of widths, it uses tall and short bars.

What can a Postnet barcode contain?

Content: 5, 9 or 11 digits (ZIP, ZIP+4 or delivery point).

How do I create a Postnet barcode for free?

Type the data in the generator on this page, adjust size and colors, and download the barcode as PNG, JPG, SVG, PDF or Adobe Illustrator (AI). PDF and AI are vector files in CMYK with 100% K black, ready for print. Everything runs in your browser: nothing is uploaded and no sign-up is needed.

What size should a printed Postnet barcode be?

Postnet has dimensions fixed by its standard, so PDF, SVG and AI files are produced at real size.

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