TrueType fonts can be adjusted to any size, and remain clear no matter what size of them.

OpenType fonts are related to TrueType, but including larger basic character strings, including small capital letters, old fashion numbers and more complicated shapes, such as "glyph" and "ligature". OpenType fonts can be adjusted to any size, and remain clear no matter what size of them.

PostScript fonts are smooth, well-detailed as a kind of high-quality fonts.