WOFF (Web Open Font Format) is a font format based on the sfnt file structure (used in TrueType and OpenType fonts) and specifically designed for web use with the @font-face declaration. It was developed by Jonathan Kew (Mozilla Corporation), Tal Leming (Type Supply) Erik van Blokland (LettError). A WOFF font is a repackaged version of a TrueType or OpenType font in a compressed form. The font format also allows metadata and private-use data to be included separately from the font data.
Creating WOFF fonts