Seeing as we are all using Ubuntu/Gnome’s powerful Nautilus file manager, a particularly quick and easy way to resize or rotate images by simply right-clicking on them comes courtesy of the extremely handy little Nautilus-image-converter extension.
Installing this extension and then restarting nautilus (or simply logging out and then back in again), reveals two new right-context menu options available when clicking on an image file’s icon, namely “Rotate Images…” and “Resize Images…”. Selecting either one of these options brings up a dialog which then allows you to simply either rotate the selected images or resize them to the dimensions of your choice – without having to fire up an external application like GIMP for example!
To grab the helpful little extension, simply run the following from your terminal:
sudo aptitude install nautilus-image-converter
Simple as that! :)
