Batch image editor for Mac OS X
PhotoBulk is a simple image editor for Mac that lets you perform various types of batch editing: add watermarks, optimize and resize images . This app makes a great image converter and renamer for Mac.
Watermark images on Mac
Choose font, size, typeface, color, opacity, and angle.
Add image watermark of choice and customize it.
Fill your photo with text tags.
Stamp a date when your photo was taken.