Comments on: Alpha Transparency vs Index Transparency For 8-bit PNGs http://team.bkwld.com/2007/11/28/alpha-transparency-vs-index-transparency-for-8-bit-pngs/ Team BKWLD Tue, 06 Jan 2009 06:05:10 +0000 http://wordpress.org/?v=2.0.7 by: Kevin Hansen http://team.bkwld.com/2007/11/28/alpha-transparency-vs-index-transparency-for-8-bit-pngs/#comment-583 Sun, 27 Jan 2008 20:52:16 +0000 http://team.bkwld.com/2007/11/28/alpha-transparency-vs-index-transparency-for-8-bit-pngs/#comment-583 That's interesting news. I just found this site looking for some info on the difference between 8bit PNG transparency ( which I'm very familiar with ). But, I'm working on converting, or trying to convert the 8bit (256 color) graphics I have, too a 32bit png image. I've not worked much at all with 32bit PNG images. I'm currently using Paint Shop Pro 7.04 and it allows me to save my PNG files with single color transparency, or Alpha channel transparency. I'm in 16 million color mode but there doesn't seem to be an option for 32bit, it only supports (I assume) 24 bit images at 65k colors. What's the difference between 24bit alpha transparency, and 32bit RGB transparency in PNG's? I only need the BG color as the transparent color and the rest of the colors in the image should stay opaque. I would appreciate any feedback. Thanks! That’s interesting news. I just found this site looking for some info on the difference between 8bit PNG transparency ( which I’m very familiar with ). But, I’m working on converting, or trying to convert the 8bit (256 color) graphics I have, too a 32bit png image. I’ve not worked much at all with 32bit PNG images.

I’m currently using Paint Shop Pro 7.04 and it allows me to save my PNG files with single color transparency, or Alpha channel transparency. I’m in 16 million color mode but there doesn’t seem to be an option for 32bit, it only supports (I assume) 24 bit images at 65k colors.

What’s the difference between 24bit alpha transparency, and 32bit RGB transparency in PNG’s? I only need the BG color as the transparent color and the rest of the colors in the image should stay opaque.

I would appreciate any feedback. Thanks!

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