Convert MNG to PGM

The MNG (Multiple-image Network Graphics) file extension is a specialized format for animated images, originating from the creators of the PNG format. Developed in 1999, MNG supports features like image sequences, transparency, and JPEG data embedding, making it useful for complex animations and graphics interchange. Primarily utilized in web applications and multimedia presentations, it offers efficient compression and high-quality visual representation, catering to the needs of graphics-intensive environments.

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.