RIOT Overview
RIOT (Radical Image Optimization Tool) is a free image optimizer for Windows from the RIOT team, designed to shrink the file size of images while keeping them looking as good as possible. It is built for the common task of preparing photos and graphics for the web or email, where smaller files load faster and use less bandwidth, without obvious loss of quality. RIOT gives you a clear side-by-side view of the original and the optimized image so you can see the trade-off between quality and file size in real time as you adjust settings. It supports the main web image formats, including JPEG, PNG, and GIF, and provides fine control over compression, color reduction, and metadata, letting you strip unnecessary data, reduce the number of colors, and choose exactly how much compression to apply. It can process images one at a time or in batches, integrates as a plug-in with popular image editors so you can optimize directly from your existing workflow, and includes tools such as transparency handling and basic adjustments. RIOT also shows the resulting file size live as you change settings, so you can hit a specific target size precisely, and it offers dual-view and single-view modes to compare the result against the original or focus on the optimized image. Advanced users can control options like chroma subsampling and choose whether to keep or discard color profiles and comments, while newcomers can rely on simple quality sliders. Because it is lightweight, fast, and free, RIOT is a longtime favorite of web developers, designers, and anyone who needs to reduce image sizes efficiently. This page links to the official RIOT download.
