Content here is by Michael Still All opinions are my own.
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pngtools is a suite of commands that I needed to make PNG easier to use in my own development. I have been coding TIFF images with libtiff for some time, and the tiffinfo, tiffdump, and tiffcp commands are quite useful for that code. I have therefore implemented similar commands for libpng.

The source repository for pngtools has been moved to subversion. You can find it at

Wed, 26 Nov 2008

PNGtools 0.4

posted at: 15:16 | path: /pngtools | permanent link to this entry

Sat, 09 Apr 2005

Pngtools 0.3 released

posted at: 04:40 | path: /pngtools | permanent link to this entry

Mon, 06 Jan 2003

PNGtools 0.2

    Version 0.2 is now available. This implements the pngcp command, which can be used to edit the characteristics of PNG files. You can download the source from here.

posted at: 04:00 | path: /pngtools | permanent link to this entry

Sat, 16 Jun 2001


    The slides for my Australian Open Source Symposium talk are now available online. This talk covers Panda, PandaLex, PandaScript, PNGTools, and stuff like that.

posted at: 07:00 | path: /pngtools | permanent link to this entry

Wed, 11 Apr 2001

Initial public release

    In line with the maxim "release early, release often", here is the initial public viewing of my work on pngtools. At the moment, the only command that is implemented is pnginfo, which is pretty much there (apart from the command line options, which are rarely used).

    I would welcome comments on the code, which can be sent to The code is (c) Michael Still 2001, and is released under the GNU GPL version 2.

  • Source

posted at: 07:00 | path: /pngtools | permanent link to this entry