pngnq - tool for optimizing PNG (Portable Network Graphics) images

Property Value
Distribution Ubuntu 19.04 (Disco Dingo)
Repository Ubuntu Universe amd64
Package filename pngnq_1.0-2.3_amd64.deb
Package name pngnq
Package version 1.0
Package release 2.3
Package architecture amd64
Package type deb
Category universe/graphics
License -
Maintainer Ubuntu Developers <>
Download size 24.17 KB
Installed size 76.00 KB
Pngnq is a tool for quantizing 32-bit RGBA PNG images to 8-bit RGBA pallete
PNG. It's is an adaptation by Stuart Coyle of Greg Roelf's pnqquant. While
pngquant uses a median cut algorithm, Pngnq uses Anthony Dekker's neuquant
algorithm (, generally
resulting in better looking results than pngquant.
Optimizers (like pngcrush and optipng) optimize the compression, usually
losslessly. pngnq quantizes colors down to 256 (or fewer) distinct RGBA
combinations, which is quite lossy. Optimized PNGs are usually two to four
times smaller than the 32-bit versions.


Package Version Architecture Repository
pngnq_1.0-2.3_i386.deb 1.0 i386 Ubuntu Universe
pngnq - - -


Name Value
libc6 >= 2.11
libpng16-16 >= 1.6.2-1
zlib1g >= 1:1.1.4


Type URL
Binary Package pngnq_1.0-2.3_amd64.deb
Source Package pngnq

Install Howto

  1. Update the package index:
    # sudo apt-get update
  2. Install pngnq deb package:
    # sudo apt-get install pngnq




2016-08-06 - Pino Toscano <>
pngnq (1.0-2.3) unstable; urgency=medium
* Non-maintainer upload.
* Replace patch libpng16.patch with pngnq-1.1.patch, taken from the upstream
bug, to fix the support for
libpng >= 1.5. (Closes: #826797)
2016-01-28 - Gianfranco Costamagna <>
pngnq (1.0-2.2) unstable; urgency=medium
* Non-maintainer upload.
[ Andreas Moog ]
* Update fix-linker-libs.patch to allow building with --as-needed 
(LP: #770821, Closes: #634220)
[ Jay R. Wren ]
* Update homepage
* Update std-version to 3.9.6, no changes required.
2016-01-24 - Tobias Frost <>
pngnq (1.0-2.1) unstable; urgency=medium
* Non-maintainer upload.
* Fix "FTBFS with libpng 1.5", adding missing include to zlib.h
(Closes: #641889)
* Change B-D to libpng-dev (Closes: #662473)
2009-11-13 - Nelson A. de Oliveira <>
pngnq (1.0-2) unstable; urgency=low
* Fix FTBFS with binutils-gold (Closes: #556065):
- New patch debian/patches/fix-linker-libs.patch
2009-10-11 - Nelson A. de Oliveira <>
pngnq (1.0-1) unstable; urgency=low
* New upstream release;
* Updated watch file;
* Updated Standards-Version to 3.8.3 (no changes needed).
2008-07-25 - Nelson A. de Oliveira <>
pngnq (0.5-3) unstable; urgency=low
* Fix segmentation fault when printing the version number (Closes: #491860).
Thanks Johan Thelmén!
* Bumped Standards-Version to 3.8.0 (no changes needed);
* Using debhelper compat level 7.
2008-03-11 - Nelson A. de Oliveira <>
pngnq (0.5-2) unstable; urgency=low
* Fix manpages typos (Closes: #470425). Thank you, A. Costa!
* Updated Standards-Version to 3.7.3 (no changes needed);
* Bumped debhelper compat level to 6.
2007-11-28 - Nelson A. de Oliveira <>
pngnq (0.5-1) unstable; urgency=low
* New upstream release;
* Updated maintainer e-mail;
* Updated debian/control to use the new Homepage field;
* Updated copyright file.
2006-07-15 - Nelson A. de Oliveira <>
pngnq (0.4.1-1) unstable; urgency=low
* New upstream release (Closes: #378148).
2006-06-18 - Nelson A. de Oliveira <>
pngnq (0.3-2) unstable; urgency=low
* Fix FTBFS (Closes: #374363);
* Updated debian/copyright file;
* Bumped Standards-Version to 3.7.2 (no changes needed);
* Using debhelper compatibility level 5;
* Added a space before Homepage: on the package long description.

See Also

Package Description
pngphoon_1.2-1build1_amd64.deb Creates a png file with the current phase of the moon
pngquant_2.12.2-1_amd64.deb PNG (Portable Network Graphics) image optimising utility
pngtools_0.4-1.3_amd64.deb series of tools for PNG (Portable Network Graphics) images
pnmixer_0.7.2-1_amd64.deb Simple mixer application for system tray
pnopaste-cli_1.6-2_all.deb Pastebin with syntax highlighting (cli tool)
pnopaste_1.6-2_all.deb Pastebin with syntax highlighting
pnscan_1.12+git20180612-1_amd64.deb Multi threaded port scanner
po4a_0.55-1_all.deb tools to ease the translation of documentation
poa_2.0+20060928-7_amd64.deb Partial Order Alignment for multiple sequence alignment
poc-streamer_0.4.2-4build1_amd64.deb MP3/Ogg multicast/HTTP streamer and MP3 cutting tool
pocillo-icon-theme_0.10.5_all.deb Tango-esque folder icon set called Pocillo
pocketsphinx-doc_0.8.0+real5prealpha-1ubuntu2_all.deb Speech recognition tool (documentation)
pocketsphinx-en-us_0.8.0+real5prealpha-1ubuntu2_all.deb Speech recognition tool - US English language model
pocketsphinx_0.8.0+real5prealpha-1ubuntu2_amd64.deb Speech recognition tool
pocl-doc_1.2-5_all.deb documentation for the pocl library