Here is a picture resizer that you can download to your machine. (NO spyware or trojans attached to it. The software is clean)
PIXresizer is a tool for quickly generating screen-friendly versions of your images with dramatically reduced file sizes. It is a photo resizing program that enables you to quickly resize one file or a selection of image files for use on the web and in e-mail. A great companion for webmasters and digital photographers.
DOWNLOAD [ 2.2 Mb .zip ]
It is from bluefive and the exact location is here. scroll down the page a little