this script adds an "anitools" submenu to the "script-fu" menu with entries useful for creating (optimized) animated GIFs:
create scanlines: paint every other horizontal line in each layer with the current foreground layer. this can decrease the size of the resulting GIF and some people like the look :-)
set image framerate: set the frame rate for all layers in the current image.
set layer framerate: set the frame rate for just the current layer.
I wrote this script using GIMP bug #88361 as inspiration.
This script provides three functions that expand GIMP's ability to deal with indexed colors. I designed them with pixel artists in mind, who frequently store their target palette as a set of swatches in one region of the image they're working on.
(Image) > Colors > Map > Colormap to palette
Creates a GIMP palette based on an indexed image's colormap, which can then be used just like any normal GIMP palette.
Performs a value-inversion on the current layer, based on its representation in the YCC colorspace. The result is similar to the existing "Value Invert" command (but without that command's color-distortion introduced from low RGB values) and can be quite striking on certain source images.
Accessible via (Image) > Colors > Components > Luma invert.
This script simulates the cut-off of the first picture of a film roll of cheap cameras like Lomo. Role model was this picture from flickr. Copy it into the scripts folder from GIMP, you will find it then under Filters -> Generic -> Photo Border.
Unfortunately without FFTW3 so far (because I do not have it on my system yet), and thus slow.
The attachment is meant to be extracted into the GIMP program directory, if you want to place it elsewhere, just drop the executable to the right place. Translations for Italian, Japanese and Russian are included.
Creates a Lightsaber effect.
To successfully create the effect, you need a black layer with a white line (roughly 2-10 pixels wide)
The layer must be selected.
(Method taken from http://www.alienryderflex.com/rotoscope)
This script automates many of the steps in MarvinX's fantastic "Make a Planet" tutorial, with a couple of added features. There is an atmospheric haze around the planet, and there are stars on the background layer. This script does not do the IWarp step. I leave that to the individual user to make wherever they want.. Everything else is in here.