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Image optimization tools (losless)

I want your lossless image optimization tool knowlegde:

Note: I´am looking for cmd tools (preferred running on mac/linux/win - but it´s not a must) Online services are welcome as well. If you have a good article, stackoverflow post or smth. else on image optimization (with statistics & stuff), i would appriciate if you could share that, too.

Already suggested:




PNG Quantizer

Online services

Articles on image optimization


Your suggestions will help to improve this little piece of software here:


kgrz commented Jul 4, 2012

Not sure if this is a lossless compression format : JPEG Mini


Thx kgrz!
If added it to the list.

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