Editors' Note: Beta or prerelease software is not intended for inexperienced users, as the software may contain bugs or potentially damage your system. We strongly recommend that users exercise caution and save all mission-critical data before installing and/or using this software.
Images are made smaller (in terms of disk size) by recompressing them using best combination of compression settings, bettter algorithms, and by removing optional, invisible information like comments. ImageOptim takes advantage of multi-core and 64-bit CPUs.
What's new in this version:
Switched from jpegrescan to MozJPEG
Add ability to temporarily enable lossy pngquant and MozJPEG re-encoding. The setting will switch itself off every time ImageOptim restarts
Added an App Extension that adds ImageOptimze option to images inside Apple Mail compose window (OS X 10.10+ only)
Fix for erroneous claim that files have already been optimized
Faster default settings for Macbook Air and older Macs
Fixed QuickLook animation on Yosemite
... See all new features »