Convert JIF to PGM

The JIF (Joint Photographic Experts Group Interchange Format) is a standard for compressing and encoding digital images. Initially introduced in 1992 by the Joint Photographic Experts Group, JIF became widely adopted due to its efficient lossy compression method, which significantly reduces file size without a substantial loss in image quality. Primarily used for web graphics and digital photography, JIF has influenced the development of other formats like JPEG and its various subtypes, ensuring high compatibility across different platforms and devices.

The Portable Graymap (PGM) file extension, originating in the late 1980s as part of the Netpbm project, stands for "Portable Gray Map". It serves as a simple, versatile format for grayscale images, enabling easy reading and writing by various programs. Due to its straightforward structure and plain text encoding, it's often used in academic and research settings where ease of parsing and accessibility are crucial. PGM files store grayscale images in a compact, efficient manner, making them an essential tool for image processing tasks.