Convert PCT to G3

The PCT (Personalized Image Capture Technology) file extension, developed by Apple in 1984, is a graphics file format used primarily for exchanging images between Macintosh applications. It supports both vector and bitmap graphics and was the native format for the QuickDraw graphics library. Over time, PCT has been largely replaced by PDF, but it remains supported by some applications for legacy purposes.

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.