moop

moop

A free and open-source image optimizer for macOS.

Allowing you to moo-ve faster with lighter images.

Download for macOS (Apple Silcon) View on Github

After copying the app to your Applications folder, run the following in Terminal to remove the app from Apple's Quarantine:

xattr -cr /Applications/moop.app

Features

Batch Jobs

Optimize many images in one run.

Drag & Drop

Drop files in and start instantly.

Format Choice

Output as WebP, PNG, or JPEG.

Quality Tuning

Balance file size and visual fidelity.

Smart Resize

Scale down while keeping proportions.

Animation Ready

Preserve animation for GIF and WebP.

Many Languages

Use moop in your preferred language.

Local Only

Processing stays on your device.

FAQ

You can import JPEG/JPG, PNG, WebP, TIFF/TIF, GIF, SVG/SVGZ, and AVIF.

moop currently exports to WebP, PNG, and JPEG.

Yes. moop is built for batch processing, so you can optimize many files in one run.

Yes. Drag files into the app to queue them instantly.

Yes. You can set max width and height while keeping proportions intact.

Yes. Animated GIF and animated WebP are supported.

No. moop is local-only, so your images stay on your machine.

Files are saved in app-managed input and output folders. You can click the reveal in file manager button to view these files at their location.

Adjust quality and effort to balance visual fidelity against file size in settings to set defaults for new images or on the sliders to adjust on a per-image basis.

Yes. Formats like PNG and WebP can preserve alpha transparency.

Yes. moop includes multilingual UI support.

moop is a desktop app currently supported on macOS. Support for Windows & Linux coming soon.

moop is a portmanteau of the lowing of a cow and "optimize".

moop is built for fast, repeatable batch workflows. You can set output rules once, process large sets in one pass, and keep results consistent across runs. If you optimize images regularly and want fewer manual steps, moop is the more workflow-focused option.