TinyPNG - Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!
TinyJPG - Compress JPEG images with perfect quality and file size
ImageOptim - Faster web pages and apps.
Short.io - Short.io makes short links (vanity urls) on your own domain. Free signup, analytics and API. Chrome, slack, zapier and segment integrations.
Gumlet - Gumlet is an end-to-end video streaming and image delivery platform
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.