Some time ago I installed Viewnior as a fast and light-weight image viewer. In this role it worked well but I missed the extra functionality that I was used to from using Irfanview on Windows.
gThumb is an image viewer and browser that includes an importer tool for transferring photos from cameras. Installation is very simple – open the Terminal and enter the following commands:
sudo apt-get update sudo apt-get install gthumb
As you can see gThumb can perform some basic image editing, including the ability to crop images:
gThumb also includes a thumbnail viewer and can even find duplicate images – the full list of features is here.
To get my .jpg images to open with gThumb I simply found a .jpg file and right clicked on it and selected Properties. Then I clicked on the Open With tab and selected gThumb Image Viewer from the list.
gThumb looks like a great Irfanview alternative!