ImageOptim — better Save for Web
Faster web pages and apps
Reduces image file sizes — so they take up less disk space and download faster — by applying advanced compression that preserves quality.
Image files scrubbed clean
Removes invisible junk: private EXIF metadata from digital cameras, embedded thumbnails, comments, and unnecessary color profiles.
Best tools with drag'n'drop
Seamlessly combines all the best image optimization tools: MozJPEG, pngquant, Pngcrush, 7zip, SVGO and Google Zopfli. All Free and Open-Source.