WOFF, short for Web Open Font Format, is a special font format that is compressed and optimized for use on the web.
The WOFFer is a tool to convert TTF or OTF to WOFF and back to TTF or OTF. In this exmple I'm using WOFFer by Andrew Sun at
There are a number of online converters you can use. *Firefox: Disabled by default, but can be enabled (need to set a flag to 'true' to use WOFF2). *Edge and IE: The font format only works when set to be 'installable'.
