gthumb is an image viewer and browser for the gnome desktop.
features
image viewer
* view single images (including gif animations). supported image types are: bmp, jpeg, gif, png, tiff, ico, xpm. * view exif data attached to jpeg images. * view in fullscreen mode. * view images rotated, flipped, in black and white.
image browser
* browse your hard disk showing you thumbnails of image files. * thumbnails are saved in the same database used by nautilus so you don't waste disk space. * automatically update the content of a folder. * copy, move, delete images and folders. * bookmarks of folders and catalogs.
image organizer
* add comments to images. * organize images in catalogs, catalogs in libraries. * print images and comments. * search for images on you hard disk and save the result as a catalog. search criteria remain attached to the catalog so you can update it when you want.
image editor
* change image hue, saturation, lightness, contrast and adjust colors. * scale and rotate images. * save images in the following formats: jpeg, png, tiff, tga.
advanced tool
* import images from a digital camera. * slide shows. * set an image as desktop background. * create index image. * create web albums. * rename images in series. * convert image format. * change images date and time. * jpeg lossless transformations. * find duplicated images. * write images to cd/dvd. * fully documented.
gthumb has also a plugin system for extensions. some standard features are implemented as extensions and are supplied with the standard distribution. users may write (and share) additional extensions.