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This package was approved by moderator dtgm on 5/12/2016.

PNGOUT optimizes the size of .PNG files losslessly. It uses the same deflate compressor I wrote for KZIP.EXE (see below). With the right options, it can often beat other programs by 5-10%. That includes pngcrush -brute, optipng -o7, advpng -z4, etc.. PNGOUT is a great tool for optimizing the size of web pages or squeezing game content onto mobile devices. Almost all .PNG files on my website were optimized with PNGOUT.

To install PNGOUT, run the following command from the command line or from PowerShell:

C:\> choco install pngout

To upgrade PNGOUT, run the following command from the command line or from PowerShell:

C:\> choco upgrade pngout


  • tools\chocolateyInstall.ps1 Show
    $tools = Split-Path -parent $MyInvocation.MyCommand.Definition
    $content = Join-Path (Split-Path $tools) 'content'
    $target = Join-Path $content 'pngout.exe'
    Get-ChocolateyWebFile `
        -PackageName 'pngout' `
        -Url '' `
        -Checksum '843F0BE42E86680C1663C4EF58EB0677ACE15FC29AB23897C83F4B7E5AF3EF36' `
        -ChecksumType 'SHA256' `
        -FileFullPath $target

Virus Scan Results

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This package has no dependencies.

Package Maintainer(s)

Software Author(s)

  • Ken Silverman


Release Notes

Version History

Version Downloads Last updated Status
PNGOUT 0.0.20110702 661 Sunday, December 25, 2011  

Discussion for the PNGOUT Package

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  • This discussion is only about PNGOUT and the PNGOUT package. If you have feedback for Chocolatey, please contact the google group.
  • This discussion will carry over multiple versions. If you have a comment about a particular version, please note that in your comments.
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  • Tell us what you love about the package or PNGOUT, or tell us what needs improvement.
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