Blue Crowbar has introduced its newest iPhoto plug-in, Impression, used to add watermarks to photographs. The watermarks can consist of a company logo, a signature, text, other images and copyright statements. The plug-in automatically imports watermarked photos as copies, preserving the original images quality, and allowing the edited pictures to be uploaded to the web using iPhoto's built-in features.

The software can watermark multiple images simultaneously and can use existing PSD and PNG pictures as watermarks. Watermarks can be repositioned both horizontally and vertically and feature controls for adjusting the transparency and margin.

Impression requires Mac OS X 10.5 and iPhoto '08. The plug-in can be purchased from the Blue Crowbar online store for $15.