Convert PNM to MIFF

The PNM (Portable Anymap) file extension, developed by Jef Poskanzer in the 1980s, stands for Portable Any Map. It is an uncompressed raster graphics format designed for portable image storage and exchange, encompassing three sub-formats: PBM (Portable Bitmap), PGM (Portable Graymap), and PPM (Portable Pixmap). PNM files store image data in plain text or binary format, ensuring easy usage across different platforms and applications. This format is widely supported by various image editing software and is valued for its simplicity and lossless compression.

The Magick Image File Format (MIFF) is a platform-independent format developed by John Cristy for ImageMagick, designed to store bitmap images. MIFF supports extensive metadata, including image color profiles, comments, and copyright information, making it versatile for various applications. It is particularly useful in image processing and conversion tasks due to its ability to handle multiple image formats like JPEG, TIFF, and PNG. MIFF's history dates back to its inception as part of the ImageMagick toolkit, which is widely used for image manipulation across different platforms.