1.3.1 alpha

• Placeholder for drag'n'drop area
• Running tools are immediately stopped when corresponding files are removed from the list
• ⌥-click “Optimize again” to optimize only files that have previously been optimized successfully
• ⌥-click “Delete” menu option to remove completed files
• ⌘⌫ as well as ⌫ and ⌦ remove files from the list

1.3

Major improvements in this release have been done by Reinhard Möller. Big thanks!

• QuickLook integration
• Added ability to copy, paste and drag files out of ImageOptim's window
• Button to reveal files in Finder
• UI improvements for OS X Lion
• Fixed updating of file paths in preferences
• Danish localization (thanks to Rasmus Kjær)
• Spanish localization (thanks to Ben Pollard and Wayne Hartman)

1.2.6

• Cosmetic UI fixes for OS X Lion
• Dropped support for PowerPC
• Dropped support for Mac OS X 10.5 Leopard. Snow Leopard or Lion is required

1.2.5

This is the last version that supports Mac OS X Leopard or PowerPC.

• Portugese localization (thanks to Sérgio Miranda)
• Russian localization (thanks to Nicom)
• Updated to Gifsicle 1.60
• Updated to OptiPNG to 0.6.4
• Updated to Pngcrush to 1.7.12

1.2.4

• Italian localization (thanks to Fabio Sanna)
• German localization (thanks to Alexander Mayer)
• Updated versions of Gifsicle and OptiPNG
• Fixed saving of AdvPNG-optimized images

1.2.3

• Changed UI to match Leopard aesthetics (based on design by Martin Andersson from Auforia and Chris Messina)
• Added Dutch localization by Mathias Bynens
• Status column is sortable
• Write errors are now properly reported
• 64-bit and Snow Leopard compatibility improved

Current version of ImageOptim requires Mac OS X 10.5.8 or newer. If you have older system you should either update it or use older version of ImageOptim.

1.2.2

• Added French localization by Mathias Richter
• Added modified version of optipng that clears dirty alpha transparency (RGB components of fully transparent pixels)
• Added Gifsicle for optimisation of animated GIF files (use PNG instead of static GIFs!)
• Added tools menu for quick disabling/enabling of tools used

1.2.1

• Fixed progress indicator
• Updated Polish translation

1.2.0

• Leaner and more stable thanks to new Leopard APIs
• Can handle order of magnitude more files at once
• Avoids writing many files to disk at the same time
• Checks actual file type rather than rely on filename extension
• PNGOUT may be gracefully stopped if takes too much time to optimize
• Temporary files are cleaned up on exit
• Errors during optimisations don't slow down or lock up ImageOptim

1.0.10

This is the last version that supports Mac OS X Tiger.

1.0.8

This is the last version that supports Mac OS X Panther.