Smushit.com is a free web service offering image optimization service. You can select images stored on your computer or an URL and optimize it(smush it).
WordPress Smush.it is a free plugin which uses the Smush.it API and help reduce file size of images you upload on your blog. Smush.it seamlessly integrates with WordPress and optimize images by JPG compression, convert GIFs into PNGs, stripping unused colors and meta data.
Installation and Uses
It’s a silent plugin, meaning you install it and forget about it. It keeps optimizing all your images in the background, every time you upload one. If you want, you can re-smush the images from your wordpress backend. Just go to “Media > Library”, select the image and click “Re-smush” link against it.
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