Convert pt3 to ttc

What is the difference between .pt3 and .ttc?

Description: PostScript Type 3 consists of glyphs defined using the full PostScript language, rather than just a subset. Because of this, a Type 3 font can do some things that Type 1 fonts cannot do, such as specify shading, color, and fill patterns.; 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.