Compress your images to the limit with smush.it
Smush.it is a dead simple tool that allows you to compress your image to the lowest size possible through non-lossy image optimization technology. You simply upload your file, and after a few seconds you download the optimized version and get a report saying how many bytes you saved. That's it.
Some features from their website:
- You can upload a bunch of pictures in your browser
- You can provide us with a list of image urls or
- You can get a Firefox Extension or a cross-browser bookmarklet to optimize the images found on any web page
Try smush.it here.