ImgZilla

ImgZilla is a privacy-first, native macOS application designed for lossless image compression. The tool runs entirely locally to ensure data privacy, processing files via a drag-and-drop interface that supports batch operations. It handles a wide variety of formats including JPG, PNG, GIF, SVG, HEIC, WebP, and AVIF. For safety, ImgZilla overwrites files in place while automatically backing up the original versions to the Trash.