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This package was approved as a trusted package on 6/8/2019.

pngquant is a command-line conversion utility and library to quantize (lossy compression) and dither truecolor PNG images, especially those with a full alpha channel, down to 8-bit (or smaller) RGBA-palette PNGs. Such images are usually two to four times smaller than the full 32-bit versions, and partial transparency is preserved quite nicely. This makes pngquant especially useful both for Web sites and for PlayStation 2 development, where one of the texture formats is RGBA-palette-based (though not PNG-compressed). This is the same technique used for many of the images on the Miscellaneous Transparent PNGs page (, and the results are often indistinguishable from the original, truecolor PNG images.

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

C:\> choco install pngquant --version 2.12.2

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

C:\> choco upgrade pngquant --version 2.12.2


  • tools\chocolateyInstall.ps1 Show
    $packageName = 'pngquant'
    $url = ''
    $checksum = '7ee4f98c7c0dfd23807b624a90a2aa3108ed46bc01f1bbd322bb9e3f3f54e6a6'
    $checksumType = 'sha256'
    $toolsDir = Split-Path -Parent $MyInvocation.MyCommand.Definition
    Install-ChocolateyZipPackage -PackageName $packageName `
                                 -Url $url `
                                 -UnzipLocation $toolsDir `
                                 -Checksum $checksum `
                                 -ChecksumType $checksumType
    Write-Verbose "Creating .ignore sidecar files for .bat filetype to prevent shims"
    $files = Get-ChildItem $toolsDir -Include *.bat -Recurse
    foreach ($file in $files) {
      New-Item "$file.ignore" -ItemType file -Force | Out-Null

Virus Scan Results

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This package has no dependencies.

Package Maintainer(s)

Software Author(s)

  • Kornel Lesiński


© 2009-Current Kornel Lesiński, 1997-2002 Greg Roelofs, 1989,1991 Jef Poskanzer


Release Notes



  • Automatically built and uploaded by dtgm

Version History

Version Downloads Last updated Status
pngquant 2.12.2 230 Tuesday, February 5, 2019 approved
pngquant 2.11.7 556 Sunday, February 18, 2018 approved
pngquant 2.11.4 218 Tuesday, December 19, 2017 approved
pngquant 2.10.1 262 Thursday, July 27, 2017 approved
pngquant 2.8.0 673 Friday, December 2, 2016 approved
pngquant 2.7.2 261 Tuesday, July 5, 2016 approved
pngquant 2.2.0 489 Friday, July 18, 2014  

Discussion for the pngquant Package

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  • This discussion is only about pngquant and the pngquant 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 pngquant, or tell us what needs improvement.
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