The current version of Xft provides a client-side font API for X applications. It uses Fontconfig to select fonts and the X protocol for rendering them. When available, Xft uses the Render extension to accelerate text drawing. When Render is not available, Xft uses the core protocol to draw client-side glyphs. This provides completely compatible support of client-side fonts for all X servers. WWW: https://www.freedesktop.org/wiki/Software/Xft/