Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.
Optimage - Advanced image optimization tool
XnConvert - XnConvert is an easy image converter for graphic files, photos and images available on Windows...
Crunch - Crunch is a No Judgment Gym that believes in making serious exercise fun by fusing fitness and entertainment. Join Crunch for all your fitness needs!
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
ImageKit.io - Instant multi-platform image optimization