# Wuffl <strong> 1. Introduction </strong> Wuffl is a simple image viewer which can move pictures either to a „Selected“ folder or to a „Deleted“ folder. "Selected" and "Deleted" folders are located in the same folder as the chosen picture. Wuffl is available for Linux Ubuntu >=14.04, Mac >= OS Ventura and Windows >=10. Imagine you review you vacation photographs and you need to select which pictures to show to your friends at the next party, or you work your way through a bunch of old pictures and you need to select a view of them for a anniversary celebration. Wuffl allows you to move the picture to an extra folder ("Selected") or to a "Deleted" folder while viewing it. <strong> 2. Installation </strong> To use the Wuffl image viewer you require: <ul> <li> <a href="https://www.ruby-lang.org/en/downloads/"><code>ruby</code></a> (v2.4) </ul> as well as the following Ruby gems: <ul> <li><code>fastimage</code> <li><code>fileutils</code> <li><code>gtk3</code> <li><code>stringio</code></li> </ul> Get the Wullf image viewer by typing ```gem install wuffl``` in your command line. This will install the wuffl gem as well as the gems mentined above. <strong>3. Usage</strong> Using your terminal or cmd start Wuffl by typing <code> wuffl</code> After starting Wuffl you'll see a start screen with a line of buttons at the bottom. To select an image go to the top left corner, klick on <code>File</code> → <code>Open file</code> and browse to the location of you images. Then select an image and click <code>open</code> or just doubleclick on the selected image. <strong>4. Remarks</strong> If you have any remarks, bugs, questions etc. please tell me, I'd be happy to help.