Save your compressed PNG files directly from Photoshop. Install the TinyPNG plugin and you will be ready to go. A new menu option will appear in Photoshop from where you can preview, select a folder and save your compressed images.
What's new in version 1.0
ReleaseMay 3, 2014
Date AddedMay 3, 2014
Operating SystemsMacintosh, Mac OS X 10.7, Mac OS X 10.8, Mac OS X 10.9
Additional RequirementsAdobe Photoshop CS5 or later