Generate and Read Mailmark 4-State Barcodes in JavaScript

Overview

The Mailmark 4-state symbology was introduced by Royal Mail in the UK for encoding postal and shipping information. It is similar to the RM4SCC standard but uses a fixed data format without extra space for customer-specific data. The symbology supports numerical digits, uppercase English letters, and spaces. Additionally, Mailmark 4-state barcodes include a checksum and employ Reed-Solomon error correction.

Mailmark 4-state Barcode Types

• Type L: Encodes 26 characters, designed for machine-readable Low Sort and Unsorted Retail and Access 70 services.
• Type C: Encodes 22 characters, used for consolidated machine-readable Low Sort and Unsorted Retail and Access 70 services.

Aspose.BarCode for JavaScript via C++ provides the MailmarkCodetext class to work with Mailmark 4-state barcodes.

Generate Mailmark 4-State Barcode

To create a Mailmark 4-state barcode instantiate the MailmarkCodetext class and input the data to be encoded.

Below is an example demonstrating how to generate Mailmark 4-state barcodes.

How to get BarCodeInstance

//create Mailmark 4-State Barcode
var mailmarkCode = new BarCodeInstance.MailmarkCodetext();
mailmarkCode.Format = 4;
mailmarkCode.VersionID = 1;
mailmarkCode.Class = "0";
mailmarkCode.SupplychainID = 384224;
mailmarkCode.ItemID = 16563762;
mailmarkCode.DestinationPostCodePlusDPS = "EF61AH8T ";

// Encode Mailmark 4-State Barcode
var generator = mailmarkCode.GetGenerator();
generator.Parameters.Barcode.XDimension = "4px";
document.getElementById("img").src = generator.GenerateBarCodeImage(); // Display barcode image

mailmarkCode.delete();
generator.delete();

Read Mailmark 4-State Barcode

To read and parse Royal Mail Mailmark 4-state barcodes in Aspose.BarCode for JavaScript via C++, it is necessary to create an instance of class BarCodeReader and set it to the value DecodeType.Mailmark. After that, the fetched data must be parsed further using class ComplexCodetextReader by calling the TryDecodeMailmark method that returns an instance of MailmarkCodetext with the decoded barcode contents.

The following code snippet is given to demonstrate how to read Mailmark 4-state barcodes.

How to get BarCodeInstance

//create Mailmark 4-State Barcode
var mailmarkCode = new BarCodeInstance.MailmarkCodetext();
mailmarkCode.Format = 4;
mailmarkCode.VersionID = 1;
mailmarkCode.Class = "0";
mailmarkCode.SupplychainID = 384224;
mailmarkCode.ItemID = 16563762;
mailmarkCode.DestinationPostCodePlusDPS = "EF61AH8T ";

// Encode Mailmark 4-State Barcode
var generator = mailmarkCode.GetGenerator();
generator.Parameters.Barcode.XDimension = "4px";
document.getElementById("img").src = generator.GenerateBarCodeImage(); // Display barcode image

generator.delete();