How to change default application?

Change the Default Application a File Opens With on Your Mac 1 Select a file with the format you want to change (ex: an MP3, a JPG picture, an HTML file) in the Finder. 2 Right click on the file and choose “Get Info.” 3 Change the application in the “Open with:” drop down. If you just want to change it for just this file, then stop here. 4 Click the Change All button and then choose “Continue. ” This will cause all files of that type to open in the new application.
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