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  1. #1
    John 8:24 JREAM's Avatar
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    Red face PNG Compression, Does it work?

    In Photoshop I can't choose smaller PNG settings with the 24-bit like I can with a gif or jpg, so ..

    I'm wanting to compress some 24-bit PNG files, as they are multi-level transparency it looks great except they are rather large if you add them all up. I don't know any other way besides PNG-24 to do multi-level transparency on the web. *I know IE6 has PNG problems but nothing a JS fix won't change.

    I've seen a CMD line png reducer, I haven't tried it yet. I was wondering if anyone used any PNG Compression and has it made a difference?

  2. #2
    Night Elf silver trophybronze trophy Varelse's Avatar
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    PNG compressor programs can do a great job on reducing the image size, but even a perfectly compressed 24-bit PNG with full transparency channel will be much bigger than the 8-bit one.
    I am using a free version of PNGOut and I am happy with the results. They have also published a great PNG Photoshop plugin (http://www.ardfry.com/png-plugin/) with PNG compression, chunk (including color profile) removal and PNG8/8 (8-bit image + full 8-bit transparency) output.
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  3. #3
    John 8:24 JREAM's Avatar
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    That is cool i might consider it if i really go crazy, i relaized i could cut down on a lot of PNG's if I just act clever about it too

  4. #4
    SitePoint Addict GeertDD's Avatar
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    Quote Originally Posted by Varelse View Post
    I am using a free version of PNGOut and I am happy with the results. They have also published a great PNG Photoshop plugin (http://www.ardfry.com/png-plugin/) with PNG compression, chunk (including color profile) removal and PNG8/8 (8-bit image + full 8-bit transparency) output.
    Do you know of a similar plugin compatible with mac?

    Why couldn't Photoshop support PNG8 alpha transparency out of the box? They did not add that in CS4, did they?

  5. #5
    Night Elf silver trophybronze trophy Varelse's Avatar
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    Unfortunately not
    I've only seen someone's advice to install ImageMagick and run a command:
    convert +gamma 0 badcolor.png goodcolor.png
    to fix image display across the browsers.
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