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ImageOptim optimizes images — so they take up less disk space and load faster — by finding best compression parameters and by removing unnecessary comments and color profiles. It handles PNG, JPEG and GIF animations.

ImageOptim seamlessly integrates various optimisation tools: PNGOUT, AdvPNG, Pngcrush, extended OptiPNG, JpegOptim, jpegrescan, jpegtran, and Gifsicle.

It's excellent for publishing images on the web (easily shrinks images “Saved for Web” in Photoshop) and also useful for making Mac and iPhone/iPad applications smaller (see Xcode warning).

How to use it

Simply drag'n'drop images or folders into the window! You can also drop files on ImageOptim's Dock icon or launch it from shell scripts with: open -a ImageOptim.app *.png.

If you install this system service you can run ImageOptim from Finder's context menu.

More about PNG

My article “PNG that works” explains why ImageOptim removes gamma information and how to get even smaller PNG files with transparency that works in ancient versions of IE.

Open Source

ImageOptim is free, open-source software under terms of the GPL v2. Your contributions are welcome! Please grab the source code and improve it! Feel free to contact me for assistance.

PNGOUT is bundled with permission of Ardfry Imaging, LLC and is not covered by the GPL.

Frequent answers

Photoshop munges optimized PNGs!

ImageOptim converts images to PNG8 alpha format when that is possible without loss of quality. That's the most efficient way to store alpha channel.

Photoshop CS5 and older have a bug which causes such images to be loaded incorrectly. The bug is fixed in Photoshop CS6.

To undo optimisations and get the big fat, old-Photoshop-compatible PNG back, open PNG in Preview.app and save it again (“Export” in Lion).

Alternatively, switch to Fireworks or only optimize copies/final versions of images.

Will ImageOptim be in the AppStore?

Unfortunately not, because Apple has explicitly forbidden publication of Free (as in freedom) Software in the AppStore. You can get ImageOptim here, without DRM.

Using The Unarchiver 3.1?

Due to bugs in Mac OS X Quarantine/Sandbox features the archive will not extract properly with The Unarchiver 3.1. Please get fixed version from author's website (not the AppStore).

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"We're Out Here," an Oregon Lacrosse Duckumentaryby bhsvideodad41,764 views

Beastie Boys Co-Founder Adam Yauch Dead at 47

Influential rapper was diagonosed with cancer in 2009

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By Rolling Stone

May 4, 2012 12:55 PM ET

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Adam Yauch aka 'MCA' performs with The Beastie Boys in Irvine, California in 2004.

Chris Polk/FilmMagic

Adam Yauch, one-third of the pioneering hip-hop group the Beastie Boys, has died at the age of 47, Rolling Stone has learned. Yauch, also known as MCA, had been in treatment for cancer since 2009. The rapper was diagnosed in 2009 after discovering a tumor in his salivary gland.

Yauch sat out the Beastie Boys' induction to the Rock and Roll Hall of Fame in April, and his treatments delayed the release of the group's most recent album, Hot Sauce Committee, Pt. 2. The Beastie Boys had not performed live since the summer of 2009, and Yauch's illness prevented the group from appearing in music videos for Hot Sauce Committee, Pt. 2.

Yauch co-founded the Beastie Boys with Mike "Mike D" Diamond and Adam "Ad-Rock" Horowitz in 1979. The band started off as a hardcore punk group, but soon began experimenting with hip-hop. The band broke big with their first proper album, Licensed to Ill, in 1986, and further albums Paul's Boutique, Check Your Head and Ill Communication cemented the band as a true superstar act.

In addition to his career with the Beastie Boys, Yauch was heavily involved in the movement to free Tibet and co-organized the Tibetan Freedom Concerts of the late Nineties. In 2002, he launched the film production company Oscilloscope Laboratories.

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