ImageOptim
GUI image optimizer for macOS that runs several lossless image compression tools on dropped files.
imageoptim.com/macrepositorydocspricing
ImageOptim is a macOS application that optimizes images. The README describes it as a GUI for lossless image optimization tools. It is downloaded from the project’s own page as a binary; the homepage states that it is not in the App Store.
The project also runs the ImageOptim API, a hosted HTTP web service for resizing and compressing images on a server. It has its own sign-up and pricing page, separate from the desktop app.
Worth knowing
The homepage says that PNGOUT is bundled under terms that are not the GPL, so the app’s license does not cover that part. The macOS version it needs is stated differently on the download page and in the changelog.
Identity
Rendering and deploy
Releases
Adoption
Sources
- 2026-10-28: links, GitHub stars
api.github.com/repos/ImageOptim/ImageOptim - 2026-10-28: links, Maintainer, Install with, Runs as, Multilingual, License, License model, Current major version
imageoptim.com/mac - 2026-10-28: Categories
github.com/ImageOptim/ImageOptim/blob/main/README.md - 2026-10-28: Headquarters
imageoptim.com/terms - 2026-10-28: links
imageoptim.com/api - 2026-10-28: First release
api.github.com/repos/ImageOptim/ImageOptim/commits/8acad18cf7b5c0b1c1df269d4abefa4b4d62e1f0 - 2026-10-28: Last release
imageoptim.com/appcast.xml - 2026-10-28: Contributors
api.github.com/repos/ImageOptim/ImageOptim/contributors