If you're on a Mac, ImageAlpha provides a good GUI that lets you preview differe... | Hacker News

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hyung on June 28, 2012 | parent | context | favorite | on: TinyPNG: Lossy compression for PNG that preserves ...

If you're on a Mac, ImageAlpha provides a good GUI that lets you preview different quality settings:

http://pngmini.com/

Also, ImageOptim provides a GUI that does lossless PNG compression:

http://imageoptim.com/

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