Radical Image Optimization Tool (RIOT for short) is a free image optimizer that will let you visually adjust compression parameters while keeping minimum file size. It uses a side by side (dual view) or single view interface to compare the original with the optimized image in real time. You will be able to control compression, number of colors, metadata settings and much more, and select image format (JPEG, GIF or PNG) for your output file. RIOT can be integrated as plugin in well-known programs like the GIMP, IrfanView and XnView.

Changes in 2024.11.0:

• fixed display of batch settings
• increased UI font size

Homepage

Changelog

Download | 64-Bit Installation

Download | 64-Bit Portable

Plugins

Please Note: This application includes optional additional software.