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Old 2008-09-20, 02:04   Link #1060
Join Date: Dec 2005
Location: event horizon
In photoshop, you can only optimize the 8-bit tranparency channel version. The 24-bit one is unoptimizable. But a 24-bit png is usually more efficient then other formats, as long as your intrested in keeping quality. Typically I find it optimizes far better then a jpeg to give the same quality, especially with large images, but of course jpeg will always win with its optimize till it looks like shit settings.

To optimize a png...
  • File > Save for web...
  • Choose PNG-8
  • (tweek settings)
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