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
online man page.
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)
iTXt" international text disabled for library compatibility.
You can build against a version with it enabled if you want
and know what you're doing (perhaps static linked).
Text parts of PNG can also be written with
Image::ExifToolfrom Perl code. It can act on many file formats. Some setups are needed to write non-standard keywords.
Text parts can be displayed with
identifyfrom ImageMagick. It can act on many image formats and also shows technical details about the image content.
pngtoolsshows text parts and basic technical information.
pngmetashows text parts, including in XML or SOIF form.
imagetext.el(mine) in Emacs to display text with images.
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.
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