BIMP. Batch Image Manipulation Plugin for GIMP.
With BIMP you can apply a set of GIMP manipulations on groups of images. Documentation @ http://www.alessandrofrancesconi.it/projects/bimp
BIMP can be easily installed on your Windows 32/64bit machine with the official installer: https://github.com/alessandrofrancesconi/gimp-plugin-bimp/releases/latest/ then download
Note for GIMP Portable users: If you experience strange things like missing buttons or totally white windows, first ensure you have installed the latest version of the GTK+ runtime (download it from here).
You must have gimptool installed in order to have the full set of libraries and dependences needed to compile BIMP (names can differ depending on the distro).
For Debian-based (Ubuntu, Linux Mint, ...)
sudo apt-get install libgimp2.0-dev libgegl-dev
sudo dnf install gimp-devel-tools
Extract the archive containing the BIMP's sources and get into the extracted folder with
make && make install
make && sudo make install-admin
to make and install for every user in the system (needs root privileges).
There's no need to install or compile BIMP on Mac, because the default native build of GIMP for Mac OSX 10.8 made by Simone from http://gimp.lisanet.de/Website/Download.html already includes BIMP! (however, it's not guaranteed to be the very latest version of either BIMP or GIMP)
For those interested in remaining on the cutting edge, the instructions are as follows:
sudo port install coreutils
PATHto make them the GNU tools the default:
PATH=/opt/local/libexec/gnubin:$PATH(You can also add this to your login profile if you want the change to be permanent).
sudo port install gimp +quartz(You can leave off the
+quartzif you prefer GIMP to run in the X11 environment instead of natively.)
Application Supportfolder), then there will be a copy command which failed listed. You will need to perform that copy command manually with the destination directory properly wrapped in quotes. I.e. if you see
cp ./bin/bimp /Users/NAME/Library/Application Support/GIMP/2.8/plug-ins cp: target 'Support/GIMP/2.8/plug-ins' is not a directorythen you need to do
cp ./bin/bimp "/Users/NAME/Library/Application Support/GIMP/2.8/plug-ins".
Note: Even though you have to install GIMP from MacPorts in order to build the binaries for BIMP, they should work just fine with the self-contained GIMP build from gimp.org. In fact, you could probably uninstall the MacPorts version once the binaries are built, but you'll need to reinstall it each time you want to update BIMP.
Visit http://github.com/alessandrofrancesconi/gimp-plugin-bimp/issues and post alerts for bugs or enhancements. Make it better!