Eltima Software (http://mac.eltima.com) has introduced PhotoBulk 1.0, a bulk image editor for Mac OS X (10.7 and higher).

PhotoBulk lets you add text/image watermark, resize, and optimize hundreds and thousands of images or photos in just one click. You can check how your files will look like before they’re processed. PhotoBulk remembers the settings you used last time, so you won’t have to set all the same options again to redo customizations for another pack of images.

What’s more, you can optimize file size of your JPEG or PNG images while keeping their original resolution, quality, and format. (Note that PNG optimization is time-consuming and works slower than JPEG compression.). Supported formats include JPEG, PNG, GIF, BMP, and TIFF

PhotoBulk 1.0 is available on the Mac App Store at https://itunes.apple.com/us/app/photobulk-watermark-resize/id537211143?ls=1&mt=12 . The cost is US$4.99 for a limited time.