How to change MIME-type association?

in macOS edited January 2014
Hello all,

I'd like to change some MIME-type associations, i.e. which program opens which file type. So far I have only found out how to change this setting for a single file (e.g. opening a wmv file with VLC instead of Quicktime via "Open with" ) but I've yet to find the place where I can change this setting globally.

Any help in this matter would be greatly appreciated.

With best regards,



  • Reply 1 of 2
    yamayama Posts: 427member
    Hold down the ALT key while choosing File > Open With... and it will change to "Always Open With..."

    Or, you can choose File > Get Info... change the Open With: app and then click on "Change All..."

    The final option is to install RCDefualtApp which gives you a nice System Preference where you can manage all the file extensions, default apps, MIME types, etc.
  • Reply 2 of 2
    erunnoerunno Posts: 225member
    That did the trick. Thanks for the quick response!
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