Source Nomacs homepage.
nomacs features semi-transparent widgets that display additional information such as thumbnails, metadata or histogram. It is able to browse images in zip or MS Office files which can be extracted to a directory. Metadata stored with the image can be displayed and you can add notes to images. A thumbnail preview of the current folder is included as well as a file explorer panel which allows switching between folders. Within a directory you can apply a file filter, so that only images are displayed whose filenames have a certain string or match a regular expression. Activating the cacher allows for instantly switching between images.
To install nomacs just run the following commands via your systems Terminal.
sudo add-apt-repository ppa:nomacs/stable
sudo apt-get update
sudo apt-get install nomacs
That's it EnJoY!