Not compatible with Firefox QuantumNot compatible with Firefox Quantum
Viewer for OpenDocument Format office files. It can display documents saved from LibreOffice, OpenOffice, Calligra, Abiword, Microsoft Word, Excel, PowerPoint. The documents should be saved in the OpenDocument Format.
Changes between 0.5.2 and 0.5.3 WebODF Improvements
Add support for double line-through in Firefox (Chrome/Safari + IE don't support this feature) (#758) Add support for subscript & superscript (#755) In odf.OdfContainer allow creation of document template types as well as querying and setting the template state of the document Add support for flat ODF files and ODF templates.
Fixed occasional crash when splitting a paragraph (#723) Keep IME composition menu & avatar in the correct position when entering characters Allow screen-readers to read the document content correctly in OSX 10.8+ versions of Safari Scroll newly created annotations completely into view (#486)
See also section about WebODF Firefox Add-on ODF Viewer Improvements
Add support for the flat-xml and template variants of ODT, ODP, ODS (i.e. FODT, FODP, FODS and OTT, OTP, OTS)