The tool to Watermark photos

I searched around for a program that will create a watermark for photos and found picture-shark.

Here are some of picture-shark's features:

• With its wizard like interface it is super easy to use
• Create real watermarks
• Choose transparent color, opacity, position and much more
• Use the "feather"-feature to make the edges between the stamp and the picture smarter
• as with any other tool, just by one mouse-click
• Very fast (processing hundreds of pictures each minute)
• Support for different output formats and quality settings
• WYSIWYG preview-mode for all settings
• Support for preserving jpeg-headers
• copy & paste between other applications and picture-shark

>> Step by step guide