Terms of use : SMUSH.IT Terms of Use
Support format: PNG, GIF, and PNG
Website: http://www.smushit.com/
Site feature: 2 options to optimize an images file, either upload from local computer or paste image URLs then submit for optimize.
Huge images size can decrease site performance. Some designer say that it is hard process to reduce images size, some even believe that no way to optimize an images without losing it's quality.
Smush.it is a handy images tool develop by Yahoo, the project run with algorithm to auto select the best images output, optimization technique including ImageMagick, pngcrush, pngout, optipng, pngrewrite, jpegtran and gifsicle.
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