Kraken Web Optimizer is described as 'With Image Optimizer you can losslessly optimize your PNG, JPEG and GIF files and thus save your bandwidth and your users' time! Kraken recompresses images with blazing speed and strips metadata with image quality intact' and is a Image Optimizer in the photos & graphics category. There are more than 50 alternatives to Kraken Web Optimizer for a variety of platforms, including Web-based, Mac, Windows, Linux and Wordpress apps. The best Kraken Web Optimizer alternative is TinyFast, which is free. Other great apps like Kraken Web Optimizer are ImageOptim, OptiImage, RasterFox and Dinky.
ImgBoost is a free online image compression tool for JPG/PNG files. Images can be compressed to as much as 60% of the original size. ImgBoost also supports WebP conversion. Convert JPEG and PNG images to WebP format to lower file sizes by additional 25%.
