Convert G4 to ISOBRL6

The G4 file extension, standing for CCITT Group 4 Fax Image, is a specialized format used primarily for storing black-and-white facsimile (fax) images. Its origins trace back to the Consultative Committee for International Telegraphy and Telephony (CCITT), now known as the ITU-T, which developed the Group 4 standard in the 1980s to improve fax transmission efficiency over digital networks. This format employs a high compression ratio to reduce file size while maintaining image quality, making it ideal for archiving documents and transmitting faxes in professional and business environments.

The ISOBRL6 file extension, short for ISO/TR 11548-1 Braille 6 dots, is a digital format used to store and represent Braille characters and documents. It is an enhanced version of the original ISOBRL format, offering improved features for displaying textual and symbolic information in Braille. This format supports a wide range of Braille codes, character sets, and languages, making it suitable for Braille printing, displays, and electronic readers for visually impaired individuals. The ISOBRL6 format adheres to the international standard ISO/IEC 14496-28, ensuring compact and portable representation of Braille text for electronic systems.