Review: Gwenview 2.3 - The Powerful KDE4 Image Viewer

What is Gwenview?
I'm sure most of (if not all) KDE users are familiar with Gwenview, especially since it became the default image viewer in KDE4. Gwenview is not only a powerful viewer for images, but also a basic image manipulation application, and with version 2.3 it allows even video previews. Although video support was available in 1.4 (which was for KDE3), it was missing in the KDE4 port of Gwenview, but with this new release shipping with the upcoming KDE 4.3, video support is back.