From Thin File:
Thin Image Upload is a drag and drop photo uploader for embedding in Web pages. It features the ability to resize images on the client side. Files that are not images can be filtered out to save bandwidth. The applet is equipped with a progress monitor that can display a thumbnail of each photo while it is in transit. Thin Image Upload is compatible with all popular server side scripting or programming languages such as PHP, Perl, and ASP.NET.