Firefox for Linux file extensions

Firefox for Linux works with the following file extensions:

Note: You can click on any file extension link from the list below, to view its detailed information. The list of extensions used or otherwise associated with the application may not be complete, because many common file extensions on our website, such as jpg (pictures) or txt (text files), can be opened by a large number of applications, or are too general file format. However most, if not all directly associated file extensions should be listed with its appropriate program. Although its likely, that some file extensions may be missing from the list of associated file extensions with the application, yet they can be opened, be part of, or otherwise be associated with the program.

Firefox for Linux default file extension associations

The most common file formats used with the specific file extensions

.download file extension is used for Mozilla partial download

.html file extension is used for HyperText Markup Language web page

.json file extension is used for Mozilla Firefox bookmark backup

Other file extensions or file formats developed for use with Firefox for Linux

.bak.extra.jsm.jsonlz4.little.maff.mods.mon.moz-delete.moz-upgrade.org.sat.src.sun.tue.xpt

Common file extensions used by Firefox for Linux

.ashx.asp.aspx.avif.cache.chm.css.dmp.download.htm.html.jar.json.json.jsp.mht.part.sqlite.tmp.webm.woff.woff2.xhtml.xpi

Other file extensions associated with Firefox for Linux

.3dmlw.abe.abm.aff.alx.ap.apng.asmx.bml.bok.bpg.ca.cer.chtml.cms.cpc.crt.cshtml.cspl.dbm.defaultsite.der.dhtml.dll.do.dump.fbu.fri.gne.ht.htc.html5.htmls.htm~.ihtml.inc.ja.jhtml.js.jsc.jsf.jspa.jspx.lasso.loaded_0.loaded_1.loaded_2.loaded_3.lock.map.mar.mfl.mhtm.mhtml.mime.moz.moz-backup.mozconfig.mozlz4.mspx.mvc.nclk.odo.pac.pem.pht.phtm.phtml.properties.qrm.rc.rdf.rsa.sbstore.sdl.sht.shtml.slt.sqlite-journal.stm.stml.url.url_.vbd.vml.vtt.wed.wml.writer.xbap.xht.xhtm.xul.zul