Common Font File Formats

Format Explanation

Installation

For .ttf, .otf fonts, on a computer, double-click the font file to open the installation window and follow the system prompts to install.

For .woff, .woff2 fonts, used in web development, they are introduced through CSS's @font-face.

Font Compatibility

Two fonts being "compatible" means: 1) Visually, the fonts are similar in appearance. 2) On a functional level, the fonts have the same character width. This allows a document formatted in one font to be changed to another font without the need for reformatting.