Downloads of v


Last Update:

13 Sep 2012

Package Maintainer(s):

Software Author(s):

  • Cosmin Truta


OptiPNG PNG GIF TIFF compression

OptiPNG : Advanced PNG Optimizer

This is not the latest version of OptiPNG : Advanced PNG Optimizer available.

  • 1
  • 2
  • 3 | Updated: 13 Sep 2012



Downloads of v


Software Author(s):

  • Cosmin Truta

  • 1
  • 2
  • 3
OptiPNG : Advanced PNG Optimizer

This is not the latest version of OptiPNG : Advanced PNG Optimizer available.

  • 1
  • 2
  • 3

Some Checks Have Failed or Are Not Yet Complete

Not All Tests Have Passed

Validation Testing Unknown

Verification Testing Unknown

Scan Testing Resulted in Flagged:

This package was submitted (and approved) prior to automated virus scanning integration into the package moderation processs.

We recommend clicking the "Details" link to make your own decision on installing this package.


To install OptiPNG : Advanced PNG Optimizer, run the following command from the command line or from PowerShell:


To upgrade OptiPNG : Advanced PNG Optimizer, run the following command from the command line or from PowerShell:


To uninstall OptiPNG : Advanced PNG Optimizer, run the following command from the command line or from PowerShell:


NOTE: This applies to both open source and commercial editions of Chocolatey.

1. Ensure you are set for organizational deployment

Please see the organizational deployment guide

  • Open Source or Commercial:
    • Proxy Repository - Create a proxy nuget repository on Nexus, Artifactory Pro, or a proxy Chocolatey repository on ProGet. Point your upstream to Packages cache on first access automatically. Make sure your choco clients are using your proxy repository as a source and NOT the default community repository. See source command for more information.
    • You can also just download the package and push it to a repository Download

3. Enter your internal repository url

(this should look similar to

4. Choose your deployment method:

choco upgrade optipng -y --source="'STEP 3 URL'" [other options]

See options you can pass to upgrade.

See best practices for scripting.

Add this to a PowerShell script or use a Batch script with tools and in places where you are calling directly to Chocolatey. If you are integrating, keep in mind enhanced exit codes.

If you do use a PowerShell script, use the following to ensure bad exit codes are shown as failures:

choco upgrade optipng -y --source="'STEP 3 URL'"

Write-Verbose "Exit code was $exitCode"
$validExitCodes = @(0, 1605, 1614, 1641, 3010)
if ($validExitCodes -contains $exitCode) {
  Exit 0

Exit $exitCode

- name: Ensure optipng installed
    name: optipng
    state: present
    source: STEP 3 URL

See docs at

chocolatey_package 'optipng' do
  action    :install
  version  ''
  source   'STEP 3 URL'

See docs at

    Name: optipng,
    Source: STEP 3 URL

Requires Otter Chocolatey Extension. See docs at

cChocoPackageInstaller optipng
   Name     = 'optipng'
   Ensure   = 'Present'
   Version  = ''
   Source   = 'STEP 3 URL'

Requires cChoco DSC Resource. See docs at

package { 'optipng':
  provider => 'chocolatey',
  ensure   => '',
  source   => 'STEP 3 URL',

Requires Puppet Chocolatey Provider module. See docs at

salt '*' chocolatey.install optipng version="" source="STEP 3 URL"

See docs at

5. If applicable - Chocolatey configuration/installation

See infrastructure management matrix for Chocolatey configuration elements and examples.

This package was submitted prior to moderation and has not been approved. While it is likely safe for you, there is more risk involved.


OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks and corrections.

Log in or click on link to see number of positives.

In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).

Chocolatey Pro provides runtime protection from possible malware.

Version Downloads Last Updated Status
OptiPNG: Advanced PNG Optimizer 0.7.6 1383 Tuesday, July 18, 2017 Approved
OptiPNG: Advanced PNG Optimizer 4524 Saturday, October 4, 2014 Approved
OptiPNG : Advanced PNG Optimizer 0.7.5 2256 Tuesday, March 25, 2014 Unknown
OptiPNG : Advanced PNG Optimizer 0.7.4 2263 Tuesday, September 10, 2013 Unknown
OptiPNG : Advanced PNG Optimizer 4458 Thursday, September 13, 2012 Unknown
OptiPNG : Advanced PNG Optimizer 0.7.1 836 Thursday, September 13, 2012 Unknown

Version 0.7.1 19-mar-2012
!! Fixed a regression in the reduction of palette-encoded grayscale
images. This regression was introduced in version 0.7.
(Thanks to Adam Ciarcinski for the fix.)

Version 0.7 29-feb-2012
* Upgraded libpng to version 1.4.9.
* Upgraded zlib to version 1.2.6-optipng.
!! Resolved a rarely-occurring out-of-bounds memory access error in
Z_RLE, by upgrading zlib. (Thanks to Christopher Wichura for the
report, and thanks to Mark Adler for fixing zlib.)
+ Added the popularly-requested option -strip.
The only suboption currently supported is "-strip all".
+ Added the option -clobber.
(Thanks in part to Maciej Pilichowski for the contribution.)
+ Added the option -backup, as an alias of -keep.
+ Added the option -silent, as an alias of -quiet.
- Deprecated the option -log.
* Changed the activity display output from STDOUT to STDERR.
+ Allowed the option -preserve to save high-resolution timestamps
on Unix, if the POSIX-1.2008 API is available. This feature was
previously available on Windows only.
! Fixed a minor precision error in the display of file size percents.
! Fixed a memory leak that occurred when reading broken GIF images.
! Fixed various build issues.
(Thanks to Sebastian Pipping and Ville Skytta for the fixes.)
* Resolved all remaining compatibility issues with libpng-1.5.
(Thanks in part to Adam Ciarcinski for the contribution.)
* Added build support for clang.
* Reorganized the source directory structure.

This package has no dependencies.

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