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PngOptimizer

March 28th, 2009 by Reinder

While doing some internet research for a future post on webcomic image optimization, I came across a blog post that claims a GPL-licensed Windows program called PngOptimizer outperforms PNGout by about 8% of the original uncompressed file size. I was a bit skeptical as the quoted compression percentage for PNGout in the post seems a bit low to me (typically for me, PNGout takes out 8 to 10% of the original file size) but I downloaded and tried it anyway. I tested it on the web files for Feral and while I don't see PngOptimizer outperforming PNGout on those, it does perform very well and is easy to use. Windows-only, though. I'll investigate more when I get home and have a better set of testing files at my disposal.

Also, here's how to enable using PNGout directly from your Windows Explorer window. Neat, if you like registry hacking.

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This entry was posted on Saturday, March 28th, 2009 at 4:06 am and is filed under Tech-geekery. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

2 Responses to “PngOptimizer”

  1. _ck_ Says:
    March 28th, 2009 at 5:34 am

    I think I better go back and clarify my blog post. PngOptimizer is 8-10% better than PngOut on SMALL files (like icons).

    Once you start getting into images that are dozens or hundreds of K, their output is about the same size.

  2. Reinder Says:
    March 29th, 2009 at 1:52 pm

    Thanks for the clarification, ck! I do think there are other reasons to investigate PNGOptimizer further as many people who are not familiar with command lines will find it easier to use than PNGOut (I betatested the GUI-based PNGoutWin and was unimpressed with its usability).