gThumb is an image viewer with basic image editing tools, like cropping, image resizing, image enhancement and more. The latest version gThumb 3.3.3 recently released with new features and improvements. It can also import photos from digital cameras and support exporting photos to online services such as Facebook, PicasaWeb and more.
The two most notable changes include in gThumb 3.3.3 are Special effects that include Dessert, Soil, Fresh Blue, Mangos, Vintage, Blurred Edges, Negative and more such effects and the second is color curve adjusting.
There are many other changes in gThumb 3.3.3 -
Other than these features, there are many bug fixes in this release.
Important note: gThumb 3.3.x uses header bars so only install it on desktop environments that support header bars (also known as client side decorations), like GNOME (Shell) or Cinnamon! In Unity for instance, you can use a hack to disable the header bars, but you'll also have to remove the overlay-scrollbar package or else some parts of the app will be transparent (here's a gThumb screenshot taken in Unity without applying these tweaks).
Install gThumb 3.3.3 in Ubuntu/Linux Mint
Install gThumb 3.3.3 on Ubuntu GNOME 14.10, Ubuntu GNOME 14.04, Linux Mint 17.1 Cinnamon and Linux Mint 17 Cinnamon. Add the following webupd8 repository to your system and update local repository index, then install gThumb.
$ sudo add-apt-repository ppa:webupd8team/gthumb
$ sudo apt-get update
$ sudo apt-get install gthumb
You can also download gThumb 3.3.3 source code from here for other Linux distributions.
If you want to remove gThumb 3.3.3 then do the following -
$ sudo apt-get remove gthumb
you can also remove the PPA, remove gthumb and downgrade all the packages that got updated via this PPA to their original versions, from the official repository-
$ sudo ppa-purge ppa:webupd8team/gthumb
Partly Source -webupd8.org