USPS OneCode (IMb)
Enter data, then download.
Format: 20 digits / 31 chars
USPS OneCode (IMb)
Enter data, then download.
Format: 20 digits / 31 chars
The USPS Intelligent Mail barcode belongs to the Postal Codes family. USPS OneCode (IMb). On this page you can generate USPS Intelligent Mail barcodes directly in your browser: enter your data, watch the preview update in real time, then download the finished symbol as PNG or SVG. Rendering happens locally on your device — nothing you type is ever uploaded to a server.
This symbology was designed for a specific industry workflow, and readers check its structure strictly — follow the input rules below so the generated symbol scans correctly the first time.
USPS Intelligent Mail codes are used for product labeling, internal tracking, and document management workflows. Because the data is fixed inside the symbol at generation time, a printed USPS Intelligent Mail barcode keeps working indefinitely — there is no service behind it, no expiry date, and no per-scan fee.
12345678901234567890Yes. You can generate and download USPS Intelligent Mail barcodes for free, with no sign-up and no watermark. Generation runs entirely in your browser — your data is never uploaded.
20 digits / 31 chars. For example: 12345678901234567890. If your data does not match the expected format, the encoder will show an error instead of producing a symbol that cannot scan.
PNG for screens and documents, and SVG for unlimited-quality print and design work. Both formats are rendered locally in your browser.
No. The barcode is a fixed image of the data you entered — it keeps scanning for as long as the print or display lasts. If your data changes, simply generate a new barcode.
Need a different symbology? Every type below has its own generator page with the same browser-based, no-signup workflow. Looking for the long-form reference instead? Read the USPS Intelligent Mail guide, or generate many codes at once with the bulk barcode generator.