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PNG color reducer for more then 256 colors?

     
10:23 pm on Oct 4, 2009 (gmt 0)

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I love index colored GIF's along with Photoshop's save for web option, so I'm wondering if there is a program that like Photoshop's save for web option would allow me to selectively reduce the colors used by a PNG image to reduce it's file size?

- John

12:47 pm on Oct 5, 2009 (gmt 0)

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Hi John

Do you need to preserve alpha transparency?

4:41 pm on Oct 5, 2009 (gmt 0)

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Are you using Photoshop? I'm not sure about other programs, but when you convert to indexed color in PS, you can select the number of colors. The minimum is 3 (I think) even in a 2-color .gif/png.

I start with 8, if it suffers, 16, then 32, etc. You can see what you're losing, and undo until you get the perfect balance of quality vs. file size.

I stay away from automated processes like "save for web" because the automated decision is not always the best one.

7:25 pm on Oct 5, 2009 (gmt 0)

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Transparency is usually something for GIF's as far as what I work with. The save for web option is not automatic if you change options around and I only use it for non-animated GIF images.

Under Photoshop's Image menu --> Mode --> Indexed Colors I can only have up to 256 colors. If the image has 12,000 colors I want to be able to reduce it to say 9,000 instead.

- John

4:56 pm on Oct 9, 2009 (gmt 0)

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IrfanView will permit you to set the color depth from 1 to 256.
 

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