tif files opening in windows instead of mac

Hello stephenfromväxjö,

Thanks for choosing the Apple Support Communities. We see you want to change what opens .tiff images on your Mac. We have a few steps that will help you get this done.

Choose an app to open a file on Mac - Apple Support

"Open a file once with a specific app

On your Mac, do one of the following:

• Drag the file onto the app icon in the Finder or the Dock.
• Select the file in the Finder, choose File > Open With, then choose an app.
• Control-click the file, choose Open With, then choose an app.
• Open the app, then choose File > Open.

Permanently change the app used to open a file

1. On your Mac, click the Finder icon  in the Dock to open a Finder window.
2. Select the file, then choose File > Get Info.
3. You can also Control-click the file, then choose Get Info.
4. In the Info window, click the arrow  next to “Open with.”
5. Click the pop-up menu, then choose the app.
6. To open all files of this type with this app, click Change All."

We hope this helps.

Cheers!