Convert G4 to DCX

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 DCX file extension, standing for ZSoft Multi-page Paintbrush Image, is a raster image format developed by ZSoft Corporation. It is primarily used for creating multi-page digital fax files, containing a sequence of PCX images. Each DCX file begins with a small header identifying the file, followed by multiple embedded PCX files. This format was widely adopted in early digital faxing and document imaging applications due to its ability to handle multiple pages within a single file.