I'm still a little surprised Inkscape does not use GdkPixbuf and gain all
the formats it supports. As a vector graphics program I would expect
raster support to come largely from GdkPixbuf and other infrastructure
Inkscape could use without significant additional maintaince costs
(inkscape already hauls around most of the rest of GTK so using this
feature shouldn't be a big deal). It makes most sense to implement these
things once so many GTK applications can benefit. Since there is no GIF
support in GdkPixbuf it seems extremely unlikely to be added to Inkscape
but I do hope GdkPixbuf support will be added soon.