Font embedding has been possible with Portable Document Format (PDF), Microsoft Word for Windows and some other applications for many years. LibreOffice supports font embedding since version 4.1 in its Writer, Calc and Impress applications.
In word processors
LibreOffice supports font embedding since version 4.1. This feature is available for the word processor LibreOffice Writer, the spreadsheet application LibreOffice Calc, and the presentation application LibreOffice Impress.
Font embedding in word processors is not widely supported nor interoperable. For example, if an RTF file with embedded fonts is opened in other word processor than MS Word, it will usually remove embedded fonts.
On the Web
Font embedding is a controversial practice because it allows copyrighted fonts to be freely distributed. The controversy can be mitigated by only embedding the characters required to view the document (subsetting). This reduces file size but prohibits adding previously unused characters to the document.
Because of the potential for copyright infringement, Microsoft Internet Explorer only permits embedded fonts that include digital rights management (DRM) protections. The Acid3 test requires font embedding with minimal DRM protections.
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