Sucuri - Website Protection, Malware Removal, and Blacklist Prevention
FILEminimizer Pictures - FILEminimizer Pictures compresses JPEG photos, TIFF, BMP and PNG images and pictures by up to 98%.
Amazon CloudFront - Amazon CloudFront is a content delivery web service.
TinyPNG - Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!
CloudFlare - Cloudflare is a global network designed to make everything you connect to the Internet secure, private, fast, and reliable.
Compressor.io - Optimize and compress your images online. Compressor is a lossy and lossless photo compression tool.