Convert ttc to pgm

What is the difference between .ttc and .pgm?

Description: The TrueType Font Collection (TTC) file type is a container format that can hold multiple TrueType fonts (TTF) within a single file. This format is designed to optimize storage and sharing of font families or closely related fonts by combining them into a single file, reducing the overall file size compared to storing each TrueType font individually. TTC files are supported by various operating systems and software applications for desktop publishing and graphic design, allowing users to efficiently manage and use multiple fonts.; 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.