The Computer Modern fonts are available in Type 1 format, but these renditions are somewhat thin and spindly, and produce much lighter results than the originals. These fonts are conversions to Type 3 fonts, done entirely in MetaPost; they are vector fonts which are a direct conversion from the original Metafont files, so they are the design most authentic to the originals. However, these fonts, because they are PostScript Type 3 fonts, are not suitable for on-screen reading, and should probably only be used for printing.