Convert pfa to pgm

What is the difference between .pfa and .pgm?

Description: A Printer Font ASCII (PFA) file is a type of font file used in the context of desktop publishing and digital typesetting. It contains font data in an ASCII text format, which includes descriptions of the font's characters, glyphs, and other typographic details. PFA files are part of the PostScript font format, designed for use in the Adobe PostScript printing language. These files allow for the scalable rendering of text, meaning they enable fonts to be resized without losing quality.; A PGM file is a grayscale image file saved in the portable gray map (PGM) format and encoded with one or two bytes (8 or 16 bits) per pixel. It contains header information and a grid of numbers that represent different shades of gray from black (0) to white (up to 65,536). PGM files are typically stored in ASCII text format, but also have a binary representation.