Compressor.io is a free online tool to compress images with a high level of compression without loosing the original quality.
The technologies used to perform such optimisations are free and open-source softwares such as : pngquant, OptiPNG, JpegOptim, Gifsicle and Scour.
You can upload an unlimited number of images (bulk upload is coming soon). They are stored on our servers for a limited time of 6 hours, then permanently deleted. You keep the full ownership of your images.
I'd like to keep improving Compressor.io but due to the increasing traffic of visitors and the server resources needed to compress a lot of files simultaneously, I need to upgrade the servers. If you enjoy using Compressor.io, please consider leaving a small tip to help me support the server costs :