The following instructions may help you to know that how to search Mac App Store for apps to open a specific file extension. Check also: How to Install Cracked Apps from Mac App Store How to Download and Install an Application from Mac App Store How to Search Mac App Store for Apps to Open a Specific File Extension Step 1 Go to Mac App Store, and in right upper corner you will find Search field, so type there extension:file extension type, for example Extension:jpg Step 2 It will sort out and provide all available apps list which may open the files with the extension jpg.

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