LibreOffice Writer was always capable of exporting your document in a portable way in the form of the PDF filter. Today in the age of tablets, smart phones and e-readers, many users read reflowable content in EPUB, which is the new PDF to some extent. LibreOffice Writer 6.0 has now basic and 6.1 will have improved EPUB export support. This work is done by integrating the libepubgen Document Liberation library and by improving both the library and LibreOffice itself along the way. Come and see how it's implemented, where are the still rough edges and how you can help.