Image Optimizer can make website can load faster. How to reduce image size?
To speedup website, you can reduce the size of the image. It will reduce page response time and bandwidth consumption. There are many web-based tools
1) Yahoo Smush It!!
Lossless web-based image optimizer. Can support all image format. It will allow automatically convert GIF to PNG.
2) Dynamic Drive Online Image Optimizer
Image Optimizer lets you easily optimize your gifs, animated gifs, jpgs, and pngs, so they load as fast as possible on your site. Furthermore, you can easily convert from one image type to another.