Fragment is an image viewer with cool features like: Upload and Share, HUD User Interface, Peeking and Skimming, Animated GIFs, History, Thumbnails, Fill View and it is fast! Features:

Lightweight; Fast startup, image loading and on-screen navigation, using OpenGL; Unique HUD interface; Unique Fill view mode (maximum usage of application window); Unique Unconstrained Pan (image can freely be moved around); Unique Smart Window Resize (resize the window around center of attention); Unique Peek and Skim browsing options; Pan and Zoom are preserved while browsing ("lock zoom"); "BACK" button, to navigate a history of viewed images and directories; Fast, resizable Thumbnails for all images in the current directory; High Dynamic Range Image (HDR) support (HDR, EXR, PFM, TIFF); Upload And Share module; Upload to Facebook is fully implemented, with comments and album selection; Support of Drag&Drop and Copy&Paste of images for upload;