So the default image for screen shots in MAC is png. And we can change it to jpg! Tom Merrit shows how to do it in Cnet’s “How to” podcast:
- Open Terminal
- type in:
defaults write com.apple.screencapture type jpg - Log in again
- Test it:
Shift + Cmd + 4 - the picture file created is in
jpg:P
Here’s another post on how to change the default format!