We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

How do I map a .csv MIME type to the "Microsoft Excel Comma Separated Values File" application?

  • 3 replies
  • 3 have this problem
  • 1 view
  • Last reply by cor-el

more options

How do I map a .csv MIME type to the "Microsoft Excel Comma Separated Values File" application using Firefox?

How do I map a .csv MIME type to the "Microsoft Excel Comma Separated Values File" application using Firefox?

All Replies (3)

more options

When I open Tools > Options > Applications and enter csv in the search box, I see two entries for Microsoft Excel Comma Separated Values File. These correspond to "application/csv" and "text/csv". I assume Firefox found these in the registry, but that's just a guess.

Are you missing both of those?

Usually you can add a new type and an application to handle it by accessing a file with the content type (MIME type) and responding to the dialog asking what to do with the file.

Does that help?

more options

Yes, I am missing both of entries. I'll have to experiment a bit. I'll let you know how I make out. thanks

more options

If the server sends the .csv file with a registered MIME type then Firefox should allow to set an automatic action for that file.

You can also look at this extension from White Alice0775: