Firefox download action

change pop-up menu when you download something

on some downloads, you cant choose which behavior firefox shoul remember, for example on RAR files
To change the default behavior on firefox regards to
‘rar, zip, mkv, avi, and so on
you can edit the ‘handlers.json’ file in your firefox profile folder

the quote font sign is displayed mostly wrong, so dont copy-and-paste

the default handlers.json
{"defaultHandlersVersion":{"en-US":4},"mimeTypes":{},"schemes":{"irc":{"stubEntry":true,"handlers":[null,{"name":"Mibbit","uriTemplate":"https://www.mibbit.com/?url=%s"}]},"ircs":{"stubEntry":true,"handlers":[null,{"name":"Mibbit","uriTemplate":"https://www.mibbit.com/?url=%s"}]},"mailto":{"stubEntry":true,"handlers":[null,{"name":"Yahoo! Mail","uriTemplate":"https://compose.mail.yahoo.com/?To=%s"},{"name":"Gmail","uriTemplate":"https://mail.google.com/mail/?extsrc=mailto&url=%s"}]}}}

edit the part "mimeTypes":{} add in the brakets "application/pdf":{"action":0,"extensions":["pdf"]},"application/octet-stream":{"action":0,"extensions":["mkv"]},"application/octet-stream":{"action":0,"extensions":["mp4"]},"application/octet-stream":{"action":0,"extensions":["avi"]},"application/octet-stream":{"action":0,"extensions":["rar"]},"application/octet-stream":{"action":0,"extensions":["zip"]},"application/octet-stream":{"action":0,"extensions":["7zip"]},"application/octet-stream":{"action":0,"extensions":["mp3"]}

so it looks like "defaultHandlersVersion":{"en-US":4},"mimeTypes":{"application/pdf":{"action":0,"extensions":["pdf"]},"application/octet-stream":{"action":0,"extensions":["mkv"]},"application/octet-stream":{"action":0,"extensions":["mp4"]},"application/octet-stream":{"action":0,"extensions":["avi"]},"application/octet-stream":{"action":0,"extensions":["rar"]},"application/octet-stream":{"action":0,"extensions":["zip"]},"application/octet-stream":{"action":0,"extensions":["7zip"]},"application/octet-stream":{"action":0,"extensions":["mp3"]}},"schemes":{"irc":{"stubEntry":true,"handlers":[null,{"name":"Mibbit","uriTemplate":"https://www.mibbit.com/?url=%s"}]},"ircs":{"stubEntry":true,"handlers":[null,{"name":"Mibbit","uriTemplate":"https://www.mibbit.com/?url=%s"}]},"mailto":{"stubEntry":true,"handlers":[null,{"name":"Yahoo!Mail","uriTemplate":"https://compose.mail.yahoo.com/?To=%s"},{"name":"Gmail","uriTemplate":"https://mail.google.com/mail/?extsrc=mailto&url=%s"}]}}}