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Ditto. I'd like to see some side-by-side comparisons with PNGOUT, PNGCrush, OptiPNG, and AdvPNG. I use ImageOptim on my Mac to automate my PNG optimization—and
by trebor 14y ago
Ditto. I'd like to see some side-by-side comparisons with PNGOUT, PNGCrush, OptiPNG, and AdvPNG. I use ImageOptim on my Mac to automate my PNG optimization—and it can get some impressive gains.
- eli 14y agoI think ImageOptim uses the pngcrush library. This website looks neat, but it seems like a CLI that can become part of my automated workflow would generally be more useful.
- molf 14y agoThe tools you mention use lossless compression. For 24-bit PNG files that means they probably won't come close the kind of lossy compression used by TinyPNG.
- trebor 14y agoThe comparison will be subjective. One will retain full detail (24-bit color) and the other will not. The "better" will be subjective, as I said. I wish Photoshop gave the option to save an 8-bit PNG with a FULL alpha channel—that's what this seems to do.
- kizza 14y agoOn the Mac I use ImageAlpha to reduce the colours to 256 (it has a preview window so you can see if it's OK), then when saving the file I choose the option to send it to ImageOptim. On Linux you can get the same by using pngquant, then using trimage. AFAIK there's no GUI frontend for pngquant so I guess how many colours would be ok and check before running trimage. The reason why I use 2 tools is that ImageAlpha/pngquant is lossy and ImageOptim/trimage is lossless.