Screenie is a simple to use screenshot composition tool, with the ability to add perspective and reflections to screenshots. To use screenie, the user simply imports a screenshot, then tweaks a few variables that control the angle of the perspective effect, the amount of reflection, and the background colour. Screenie is an awesome example of a simple app that doesn’t try to do too much, it pretty much just lets you apply the perspective / reflective effect over your existing screenshots (with great results)

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To install screenie on Fedora, find it in the Software application, or install from the command line with sudo yum install screenie-composer