Convert PCDS to G3

The PCDS file extension stands for Photo CD Multi-resolution Bitmap Graphics, a format developed by Kodak in 1991 for digitizing and storing high-quality images on CDs. PCDS files were used to store scanned prints and slides, leveraging proprietary encoding to maintain image quality. This format was part of Kodak's Photo CD system, which aimed to provide a reliable method for archiving and accessing digital photographs.

The G3 file extension refers to the CCITT Group 3 Fax Image, a standardized format developed by the Consultative Committee for International Telegraphy and Telephony (CCITT), now known as ITU-T. This format was created to efficiently compress black-and-white fax documents for transmission over telephone lines. It employs a method called Modified Huffman Coding for data compression, enabling reduced transmission time and bandwidth usage. G3 was widely adopted in the 1980s and 1990s as the primary standard for fax transmissions, ensuring compatibility across different fax machines and systems.