Best PNG Compression Software? [closed]

Best PNG Compression Software? [closed] I've just been trying to compress an image with the PNG image format and have had varying results from different applications. For reference, the image I am trying to compress is a screenshot of this site. Here's a download of the original image.
Asked by: Guest \| Views: 276

Total answers/comments: 5

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Guest [Entry]

"PngOptimizer 165KB in about 2 seconds.

Image quality is untouched."

Guest [Entry]

"Just for a quick benchmark, I downloaded 170 random PNGs from different websites on the internet, totaling about 8MB. Here are the results:

Original: 8,403,619 bytes total
PNGCrush: 7,398,194 bytes total
Optipng: 7,340,167 bytes total
PNGOUT: 6,938,205 bytes total

So it seems PNGOUT (or any GUI based on it) is the best choice if size is your primary goal. These are all lossless transformations."

Guest [Entry]

PNGGauntlet is a GUI wrapper for PNGOUT and if you look at that page there is a PNGOUT.DLL plugin for Irfanview if you prefer that as an interface, or you could use PNGOUT on the command line or in scripts if you want to automate your compression as part of the build/deployment process.

Guest [Entry]

I like OptiPNG. In addition to the source and command line utility there are optipng plugins for Windows Explorer, Paint.NET, a couple front ends for Mac users, and some other projects (Apache Ant, Eclipse; see Related Projects section on home page).

Guest [Entry]

In my tests the best online tool is http://compresspng.com