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 4 source here, or a Debian package here or from my repo.

pngtextadd-4.tar.gz (19k, and sig)
pngtextadd_4-0.1_i386.deb (8k, and sig)

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

The deb is built against libpng16 which includes "iTXt" international text. It should build against libpng back to at least 1.2 if something else is desired.

Text parts of PNG can also be written with

Text parts can be displayed with

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