Fotosizer is a free batch photo/image resizer tool. It lets you resize hundreds of photos in a matter of minutes in a quick and easy way.
Increasingly, sharing photos on the internet is becoming more and more popular. Photos, represented as JPEG files from digital cameras, taken at high resolutions are far too large to send over the Internet, with some photos ending up at 5 mega bytes. Uploading one photo to a photo sharing website is fine, but 10, 20, or even more, this can take forever, especially on a dial-up connection.