Convert BIE to FF

The BIE file extension, associated with the Joint Bi-level Image Experts Group, stands for "Binary Image Entity". This format was developed for efficient compression of binary images, primarily used in fax transmissions. Introduced in 1993, JBIG1 provided lossless compression, outperforming earlier standards like CCITT Group 3 and 4. It was later succeeded by JBIG2, which offered improved compression efficiency for bi-level images.

The Farbfeld (FF) file extension stands for "Farbfeld Lossless Image", a format designed for simplicity and efficiency in parsing and piping image data. Introduced by the Suckless community, Farbfeld stores images in a straightforward, uncompressed format, making it ideal for use with external compression algorithms. This format uses 32-bit RGBA values for each pixel, ensuring lossless quality. Its history traces back to the need for a minimalistic, easily manageable image format that avoids the complexity of integrated compression found in formats like PNG.