.EFM File

The efm file extension is associated with the Electronic Fiction Manuscript (EFM), a file format used to store rich formatted document created as a better alternative to popular Rich Text Format.

The efm file stores document.

How to open:

Use EFM to work with *.efm files to work with *.efm files.

How to convert:

Use compatible tools to export *.efm files to other formats.