GPLv3

pngtextadd

pngtextadd adds text comments to a PNG image file using libpng. It's pretty minimal, but it's surprising how many image manipulation programs lack support for setting text parts of PNG so with pngtextadd you can at least ensure a description or author's name. Read more in the .

pngtextadd is free software (free as in freedom), published under the terms of the GNU General Public License (v3 or up).

To build pngtextadd you'll need,

Download version 3 source here, or a Debian package here or from my repo.

pngtextadd-3.tar.gz (19k, and sig)
pngtextadd_3-1_i386.deb (7k, and sig)

The sig files are a Gnu PG ascii armoured signatures generated from my key.

Debian libpng12 has "iTXt" international text disabled for library compatibility. You can build against a version with it enabled if you want iTXt and know what you're doing (perhaps static linked).


Text parts of PNG can also be written with

Text parts can be displayed with


This page Copyright 2009, 2010, 2011, 2013, 2014, 2015, 2016 Kevin Ryde, except for the GPLv3 logo which is Copyright Free Software Foundation and used here in accordance with its terms.
(Back to the sitemap.)