Smush.It is an image optimization tool which will reduce the size of your images without compromising quality. We all know that large images take longer to load thus consuming more bandwidth. Optimizing images will greatly improve the overall performance of a website especially if it is very rich in images.
The service is very handy and using it will not require much of your time. All you need to do is upload your images to Smush.it and it will do the optimization for you. You can immediately download your optimized image(s) once the process is completed. Optimizing images using Smush.it can be done in three ways. You can use their Firefox Plugin, provide a list of image URLs or upload images from your computer to Smush.it.
If you want to put your images on a diet and save some bytes, Smush.it is a great place to start. It never hurts to save a few (milli)seconds of loading time for your blog or website viewers.