Links
Some stuff related to this project.gpp
Used to build these web pages.
Geany
Used to write the source.
cairo
Used in conjunktion with abydos to manipulate and render images.
DjVu
Used by the djvu plugin.
ImageMagick
Used by the magick plugin to load a variety of image formats.
GD Library
Used by the gd plugin to load a couple of image formats.
libheif
Used by the heif plugin.
libicns
Used by the icns plugin.
libnsbmp
Used by the nsbmp plugin to load Windows bitmaps and Windows icons (also needed to the ani plugin for Windows animated cursors).
libnsgif
A library for easy GIF decoding, used by the nsgif plugin.
libpng
Used by the apng plugin.
librsvg
Used by the svg plugin.
libtiff
Used by the tiff plugin.
libwebp
Used by the webp plugin.
libwmf
Used by the wmf plugin.
netpbm
Used by the netpbm plugin for the Portable Any Map set of image formats and the Portable Arbitrary Map image format.
Poppler
Used by the pdf plugin.
RECOIL
Used by the recoil plugin for a variety of image formats (mainly older ones).
Xcftool
Used by the xcf plugin.
Related projects
Deark
An application that convert many old image formats to modern ones. And also extract information information and embedded files. While abydos is mostly focused on viewing, Deark often a better alternative for migration.
Sources of information
Archive Team graphics file format wiki
A great source of information about many file formats.
Multimedia Wiki
Information about all sorts of multimedia formats, not just graphics.
C64 Graphics File Format Specs
Specification for many C64 graphic formats.
C64 graphic modes
Nice overview of the different C64 graphic modes.