Dynamic Copyright It! is a tool that allows you to add copyright notices on-the-fly directly onto your images without any fussing around in image editors. It's easy to integrate with other scripts that will allow you to edit the copyright text of images throughout an entire Web site without manually editing each one. The copyright text, font size, and color of the notice can be customized.
Easy PHP Thumbnail Class can be used to manipulate images and generate thumbnails. It can load images from files and generate thumbnails that can be saved to files or be generated as the current script output. The class can also perform other image manipulation functions such as adding shadows, clipping rounded corners, filters, bilineair image deformations, and more. Over 45 image manipulation functions are available.