PhotoBulk is a simple Mac photo editor that lets you perform various types of batch editing: add watermark to photos, resize images and optimize pictures. This app makes a great image converter and renamer for Mac.

Watermark for Mac
Customize your photos with text, image, script and date stamp watermark on Mac. Just drag your image onto the app, choose the watermark type, customize additional settings if needed, and you are good to go. You can place watermark anywhere, choose any size for it and rotate it. No effort is needed in this watermarking app for Mac.

Image Resizer for Mac
Resizing images on Mac is very easy with PhotoBulk. Change the width and height of all the added images proportionally, resize photo by percentage, max size or enter your own desired dimensions. PhotoBulk maintains the aspect ratio for your images according to new dimensions you select.

Image Optimizer for Mac
Every byte counts when you're short on space or sharing images with someone over the Internet. Photobulk allows you to compress JPEG or PNG images in bulk in one click. Reduce image size while keeping its original resolution, quality, and format.

Bulk Photo Renamer for Mac
Forget about those weird camera names - rename photos by giving them a new filename and number sequences. You can also vary starting digit and number of zeros. To rename your numerous photos drag-and-drop them onto the PhotoBulk application, click the Start button, and the app will generate new files in the specified location, keeping the original files.

Requirements:
OS X 10.9
64-bit Intel