Dreamscape Software’s JPEGCompress is the perfect tool for almost anyone who needs to compress graphic files for web site posting.
I personally use it to convert MSPaint’s .BMP files to smaller size JPEG files, which I then upload or post to various sites. It also scales images down which is something that comes in handy with digital camera files.
Best of all JPEGCompress is free for personal use. If you use Windows, I doubt you could find a better utility than JPEGCompress for free.