Tutoriale
RIOT Plugin v.0.4.4
Radical Image Optimization Tool (RIOT for short) is a free image optimizer that will let you to visually adjust compression parameters while keeping minimum filesize.
RIOT v.0.4.4
Saving images for web/email/other media with the best compression ratio and quality is a difficult task if you don't have the right tools. Choosing the right format then choosing the right parameters are the key factors of smaller files.