Running Safari 10.01 and wondering if there is any way to make screen grabs (cmd-shift-4) default to JPG format instead of PNG? I do a lot of screen grabs that I want to send to others (text/mail). Trying to do a copy/paste with PNG doesn't seem to work for me. So I have load "Paintbrush", open the PNG snatch and then save it as a JPG. I don't see anything in Safari Preferences.