TinyPNG - Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!
Shrink Me - Compress images with one drag / click
TinyJPG - Compress JPEG images with perfect quality and file size
Imagify.co - Resize, Crop and Manipulate your images on the fly!
TinyVid by Kamua - Trim and compress video files to fit any size limitation
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.