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How To Change File Associations in OS X

If you’re new to Macs and OS X, one of the things is it selects Mac software to open files. This is annoying – especially for AVI files, which QuickTime doesn’t support. Here’s how to change the default programs for specific file types.

First, navigate to the file you want to change the file association for. Right click on it and select Get Info.

Get Info

From the Info screen expand Open With and select the program you want the file to open with. In this example I’m changing the AVI files to open with VLC Media Player.

Open With

Next click on the Change All button.

Change All

When the message comes up that asks if you’re sure, click Continue.

Confirm and Continue

Now all of your files will open with the program you selected.

Changed AVI Files

You can change the default file type for any files on your system. Here’s an example of making all JPEG images open in iPhoto instead of Preview.

open with iPhoto

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