You can install the eog-plugins package to get extra plugins for the image viewer. Plugins add additional features, like the ones listed below.
You can install the eog-plugins package using your Linux distribution's package manager.
The following features are included in eog-plugins:
: Displays camera settings and histograms for digital photos.
: Enables changing background in fullscreen mode.
: Activate fullscreen mode with double-click.
: Display the geolocation of a digital photo on a map.
: Upload your pictures to PicasaWeb.
: A Python scripting console for the image viewer.
: Send a picture to a friend by attaching it to a new email.
: Shuffles images in slideshow mode.
: Adjusts the zoom to have the pictures's full width fit into the window.
You can manage plugins by using the thein the Preferences window.