Free simple to use image resizer
Here is a link to a simple windows application that allows one to batch resize jpg image files. Usually digital cameras store images as large jpg files which are too large for emails and sharing on the web. This tool will allow you to resize those pics to a size more suitable for emails and websites.
Just right click and select save link as or save target as and save the file to your desktop or anywhere on your computer that is easily accessible. Drag your image files over onto the icon and voila!
There are some clear instructions on the website.