USPS and 4-State Barcode SDK Technology

LEADTOOLS provides fast, highly accurate, and reliable USPS and 4-State Barcode detection, reading, and writing support for .NET (C# & VB, Core, Xamarin, UWP), C/C++, iOS, macOS, Linux, Java, and web developers. The award-winning LEADTOOLS libraries help programmers add fully featured USPS and 4-State Barcode technology to their applications in record time.

LEADTOOLS supports several 2-state and 4-state barcode symbologies employed throughout the world by various post mail office systems. These barcodes are comprised of bars of different heights, as opposed to different widths that most linear 1D barcodes employ. 2-state barcodes are able to encode the digits 0-9 and are effectively used for zip codes, routing numbers, and tracking numbers, while 4-state barcodes can encode alphanumeric characters to encode the entire address.

LEADTOOLS USPS and 4-State Barcode SDK Symbols

Postal Numeric Encoding Technique (POSTNET)

POSTNET Barcode

POSTNET was developed by the United States Postal Service (USPS) to represent the 5 or 9 digit ZIP code or an 11 digit "Delivery Point Code" of US destination addresses. A POSTNET symbol can be printed upon an envelope and be used to facilitate faster mail sorting. These symbols are printed upon flat pieces of mail such as magazines and envelopes.

Post Alpha Numeric Encoding Technique (PLANET)

PLANET Barcode

PLANET is similar to POSTNET in that it uses half and full height bars to encode data, always begins and ends with a full bar, and digits are represented using a two of five code. The major difference between POSTNET and PLANET is that in POSTNET full bars represent "on" bits while in PLANET full bars represent "off" bits. PLANET is used by the United States Postal Service to identify and track mail during delivery.

USPS 4-State Customer Barcode (USPS4CB)/Intelligent Mail Barcode

USPS 4-State Barcode

Intelligent Mail Barcode, more commonly known as 4-State Customer Barcode or USPS4CB, is a 65-bar code used by the United States Postal Service for domestic delivery. It is designed to provide improved functionality and information than its predecessors POSTNET and PLANET. It effectively combines the routing ZIP code and tracking information into a single barcode.

Royal Mail (RM4SCC)/CBC (Customer Bar Code)

Royal Mail 4-State Barcode

The RM4SCC symbol is used by the Royal Mail Cleanmail service. The Royal Mail Service has specific requirements placed upon this symbol to ensure maximum readability and efficiency during the mail routing process.

Australia Post 4-State

Australian 4-State Barcode

Australia Post 4-State is used by Australia Post for postal code and automatic mail sorting. Australia Post has chosen the 4-State barcode, a derivation that is already used successfully by other postal administrations. It comprises four types of bars (the four states), each of which has a distinct name, value, and barcode symbol.

Other Types of Linear 1D Barcodes

Technology Related to USPS and 4-State Barcode

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Supported Development Platforms for USPS and 4-State Barcode

Documentation Links for USPS and 4-State Barcode

White Papers Written About USPS and 4-State Barcode

  • Choosing the Right Barcode for Your Application

    For many of us, a day hardly goes by without seeing a barcode. For software developers, this creates immense opportunities to create software that handles both the encoding and decoding of barcodes. How does a developer or project manager get started on their path to success? When you boil it down, there are two primary questions you should ask: Which barcodes should I use? How will I use them? This white paper will help clear the muddied waters surrounding both of these questions by detailing several of the most popular barcodes and how programmers can use the award winning imaging SDK technology in LEADTOOLS to quickly and easily develop their application.

Demo Applications that Include USPS and 4-State Barcode

HTML5/JavaScript Barcode Reader

Uses HTML5 and JavaScript to demonstrate our barcode technology reading 34 different barcode symbologies in various test and real-world images.

Screenshots of USPS and 4-State Barcode

USPS 4-State Barcodes

USPS 4-State Barcodes

LEADTOOLS SDK Products that Include USPS and 4-State Barcode

LEADTOOLS Barcode Pro v20

LEADTOOLS Barcode Pro includes everything developers need to detect, read, and write over 100 different 1D and 2D barcode types and sub-types such as UPC, EAN, Code 128, QR Code, Data Matrix, and PDF417. By building upon the award-winning LEADTOOLS Imaging Pro features, including 150+ image formats, image compression, image processing, image viewers, imaging common dialogs, 200+ display effects, TWAIN and WIA scanning, screen capture, and printing, LEADTOOLS Barcode Pro is one of the best values on the market for barcode imaging technology.

LEADTOOLS Pro Suite v20

LEADTOOLS Pro Suite is a an extensive bundle in the LEADTOOLS Pro line of SDKs and includes HTML5 Zero-footprint image viewers, barcode detect/read/write, advanced PDF read/write/view/edit, 150+ image formats, image compression, image processing, image viewers, imaging common dialogs, 200+ display effects, TWAIN and WIA scanning, screen capture, and printing. Developers using LEADTOOLS Pro Suite can develop robust imaging applications and solutions at a fraction of the cost of similar feature sets found elsewhere on the market.

LEADTOOLS Document Imaging v20

Develop powerful document imaging applications with LEADTOOLS Document Imaging. Features include PDF viewing and editing, comprehensive image annotating, specialized bitonal image displaying, and image processing. Other features include performance and memory optimizations for bitonal images, document image cleanup, including inverted text, border, hole-punch, and line removal, and scanning with LEADTOOLS Fast TWAIN and WIA.

LEADTOOLS Recognition v20

The LEADTOOLS Recognition Imaging SDK is a handpicked collection of LEADTOOLS SDK features designed to build end-to-end document imaging applications within enterprise-level document automation solutions that require OCR, MICR, OMR, barcode, forms recognition and processing, PDF, print capture, archival, annotation, and image viewing functionality. This powerful set of tools utilizes LEAD's award-winning image processing technology to intelligently identify document features that can be used to recognize and extract data from any type of scanned or faxed form image.

LEADTOOLS Document Imaging Suite v20

The LEADTOOLS Document Imaging Suite SDK is a comprehensive collection of LEADTOOLS SDK features designed to build end-to-end document imaging solutions that require OCR, MICR, OMR, ICR, barcode, forms recognition and processing, PDF, HTML5 Zero-footprint viewing, conversion, print, capture, archival, annotation, and image viewing functionality. This powerful set of tools utilizes LEAD's award-winning image processing technology to intelligently identify document features that can be used to recognize and extract data from any type of scanned or faxed form image.

LEADTOOLS Medical Imaging v20

Develop powerful Medical Imaging applications with the LEADTOOLS Medical Imaging SDK. Features include comprehensive DICOM data set support, 8-16 bit extended grayscale image support, image annotation, specialized extended grayscale image display such as window level and LUT processing, and medical-specific image processing. Other features include lossless JPEG compression, and signed and unsigned image data processing.

LEADTOOLS PACS Imaging v20

Develop robust DICOM PACS applications with LEADTOOLS PACS Imaging. Features include Medical Web Viewer Framework, high and low-level PACS SCP and SCU functions and controls, secure PACS communication, comprehensive DICOM data set support, image annotation, extended grayscale image display such as window level and LUT processing, and specialized medical image processing. Other features include lossless JPEG compression, JPIP, MRTI, and signed and unsigned image data processing.

LEADTOOLS Medical Imaging Suite v20

Develop powerful PACS and Medical imaging applications with LEADTOOLS Medical Imaging Suite. Features include LEAD's Zero-footprint HTML5 DICOM Viewer, Medical Web Viewer Framework, Medical 3D, DICOM Multimedia codecs, high and low-level PACS SCP and SCU functions and controls, secure PACS communication, Print to PACS, comprehensive DICOM data set support, image annotation, extended grayscale image display such as window level and LUT processing, DICOM Hanging Protocol, and specialized medical image processing. Other features include lossless JPEG compression, JPIP, and signed and unsigned image data processing.