How to make Mac Screen Capture in JPEG!
2016-06-20
How to make Mac Screen Capture...

As default Macintosh screen capture (Command + Shift + 3) captures screen in PNG file format. But for me JPEG is more useful. I found the way to change the file format.

http://www.idownloadblog.com/2014/07/31/how-to-change-mac-screenshot-file-format/