Gwenview is a fast and easy to use image viewer for KDE.

Features:
 - Supports simple image manipulations: rotate, mirror, flip, and resize.
 - Supports basic file management actions such as copy, move, delete,
   and others.
 - Functions both as a standalone application and an embedded viewer
   in the Konqueror web browser.
 - Can be extended using KIPI plugins.

WWW: http://gwenview.sourceforge.net