RasterFox

RasterFox is a native Mac app for compressing JPEG, PNG, WebP, and AVIF images, with AI upscaling and background removal built in. Smart presets, batch processing, and a synchronized before-and-after preview help you reduce file sizes while checking image quality. Everything is processed locally on your Mac. Requires an Apple Silicon Mac running macOS 14.6 or later. Includes a 14-day full-feature trial, then a free tier with unlimited Balanced compression; a one-time $9.99 Pro license unlocks the rest and covers three Macs.

Key features

• Image compression — Optimize JPEG, PNG, WebP, and AVIF images with format-specific compression.
• Smart presets — Choose High Quality, Balanced, or Small Size to suit your images.
• Visual comparison — Compare originals and optimized images with synchronized zoom, pan, and side-by-side views.
• Batch processing — Optimize multiple images at once, with up to eight processed in parallel with Pro.
• AI upscaling — Enlarge images locally at 2×, with 3× and 4× available with Pro.
• Background removal — Remove backgrounds with local AI or adjustable color matching, including enclosed gaps.
• Format conversion — Convert images to PNG, WebP, or AVIF, with support for transparency.
• Image resizing — Resize images alongside compression and background removal.
• Flexible saving — Save alongside originals, replace with a backup, or use custom filename templates with Pro.
• Local processing — Compress, upscale, and remove backgrounds entirely on your Mac.

Requirements and download

macOS 14.6 or later; Apple silicon.

Download for Mac.