The packing of this information lets User Agents to avoid unpacking, decompressing or installing the font if it is already present on the machine. The EOT consists of a single EMBEDDEDFONT structure that provides enough basic information about hte font name and supported characters. EOT File FormatĮOT file format details can be found on W3 submission page and elaborates the structure used by this font format. It was resubmitted in March 2008, but W3C ultimately chose Web Font Format (WOFF) which was standardized then. The EOT font was submitted to W3C in 2007 as part of CSS3 but due to its requirements to be permanently installed on remote system became the reason of its rejection. EOT uses a Microsoft tool to create a font from existing TTF/OTF fonts. EOT files are smaller in size for the reason that they are compressed using LZ compression. Similar to OTF fonts, EOT supports both Postscript and TrueType outlines for the glyphs. The file isn’t of primary use and is sort of accompanying document with the main document or web page.

It was created by Microsoft and is supported by Microsoft Products including PowerPoint presentation. These are mostly used in web files such as a Web page. eot extension is an OpenType font that is embedded in a document.

.eot file format