ImgZilla compresses images directly on your Mac — nothing ever leaves your machine. Drop in files or whole folders; it compresses in place, same filename, path, and format, so nothing breaks in your CMS, code, or archive. PNG and SVG are true lossless; JPEG, WebP, AVIF, HEIC, and GIF are visually lossless, tuned per format. No quality sliders — just a built-in compare window to verify results yourself. Originals move to the Trash by default and are fully recoverable.
