ImageOptim
Smaller images, same pixels.
About ImageOptim
Drop images in and ImageOptim strips metadata and recompresses with the best tools available, losslessly by default.
Install ImageOptim
Download it from the links above, or install it from the Terminal:
brew install --cask imageoptim Questions about ImageOptim
Is ImageOptim free?
Yes. ImageOptim is free and open source under the GPL-2.0 license. The source code is on GitHub at ImageOptim/ImageOptim.
Where can I download ImageOptim for Mac?
Download ImageOptim from the developer's website (imageoptim.com) and GitHub. MacWorthy links only to official sources.
Can I install ImageOptim from the Terminal?
Yes. With Homebrew, run brew install --cask imageoptim.
What are good alternatives to ImageOptim?
Other design & photo apps for Mac worth a look are Pika (open source), Squash (one-time purchase), ImageFlow (open source) and Equinox (open source).
Other design & photo apps like ImageOptim
Pika
A colour picker with contrast built in.
Squash
Batch image compression and conversion.
ImageFlow
Non-destructive image editing with nodes.
Equinox
Make your own dynamic wallpapers.
RasterFox
Shrink images and check the result side by side.
Pixelmator Pro
A pro image editor, built entirely for the Mac.
Affinity
Pro vector, pixel and layout tools in one app.
Sketch
The native interface design tool.