Occasionally I want to change the extension for a given file in Windows Explorer, e.g. rename audio_only.mp4 to audio_only.m4a.

These valid possibilities are somehow unappealing:

  • Show extensions in Explorer, this makes them editable.
  • Use the shell command rename.

Is there a way to perform the renaming more quickly.

I assume this will need to add an entry in the contextual menu (right-click)?

  • it would take a whole 10 seconds to show all extensions. Make your changes, hide them again. – Tetsujin Feb 22 '15 at 10:46
  • You could create a batch file that prompts you for the new extension and then renames a file you drag and dropped onto it. – TheUser1024 Feb 22 '15 at 10:58
  • @Tetsujin, I know, but how many times did I loose these 10s... and it is guaranteed to continue for years. At some point in time I wanted to solve this annoyance once for good. – mins Feb 22 '15 at 13:58

Answering my own question...

I found an open source shell extension working for multiple files at once.

Change File Extension Shell Menu, by T800

enter image description here

  • Nice software find, thanks, adding it to my collection. – Moab Feb 22 '15 at 22:16

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