Top Alternatives to RIOT - Radical Image Optimization Tool

ImageOptim is a powerful macOS utility designed to significantly reduce the file size of images without compromising visual quality. It achieves this by intelligently removing unnecessary metadata and employing various compression techniques, resulting in faster website loading times and reduced storage requirements.

PNGGauntlet is a free Windows application designed to optimize PNG images, making their file sizes significantly smaller without any loss in quality. It achieves this by combining prominent compression tools like PNGOUT, OptiPNG, and AdvPNG into a user-friendly interface.

FastStone Photo Resizer is a free batch image converter and renaming tool designed for efficiency. It handles various image formats and offers essential editing functions like resizing, cropping, watermarking, and color adjustments in a batch process.

FileOptimizer is a robust utility for lossless file size reduction, supporting a vast array of formats including popular image, document, and archive types. It leverages various optimization techniques to shrink files without compromising quality, and supports batch processing for efficient workflow.

JPEGmini is an intelligent photo optimization software that drastically reduces the size of JPEG images without compromising quality. Utilizing a unique patented technology, it helps photographers and web developers save disk space, speed up websites, and improve image sharing efficiency.

Light Image Resizer is a comprehensive yet easy-to-use application for resizing, converting, protecting, and organizing your digital photos and images. It supports batch processing, allowing you to optimize large collections quickly.

Caesium is a powerful and user-friendly image compression software designed to reduce the file size of your images without significantly impacting visual quality. It supports various image formats and offers batch processing capabilities for efficient workflows.

Optimus.io is a powerful image optimization service designed to reduce image file sizes without compromising visual quality, significantly improving website performance and loading speeds.