Radical Image Optimization Tool (RIOT) is a free program for optimizing images for specific sizes. With it, you can visually choose the optimal balance between file size and image quality. This is often necessary, for example, when uploading photos to websites. Since quality photos weigh a lot, it is necessary to sacrifice the resolution in order to quickly upload the photos to the Internet.
The program has a two-panel interface, where you can see the photo before and after conversion. By changing the quality, you can immediately see the size of the future file. RIOT does not require a lot of RAM for its work, but it is nevertheless a powerful tool that will satisfy even professionals. You can control the compression level, the metadata settings. There are three available file formats for saving files - JPG, GIF and PNG. It supports batch processing of files and standard functions of image correction - contrast, brightness, gamma, inversion.