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GThumb Logo.svg
A screenshot of gThumb 3.4.0.
A screenshot of gThumb 3.4.0.
Original author(s) Paolo Bacchilega
Developer(s) The GNOME Project
Initial release 2001; 16 years ago (2001)
Stable release 3.5.1 (February 27, 2017; 4 months ago (2017-02-27)) [±]
Preview release 3.3.2 (May 18, 2014; 3 years ago (2014-05-18)) [±][1]
Written in C (GTK+)
Operating system BSDs, Linux, Solaris, other Unix-like
License GNU General Public License

gThumb is an image viewer and organizer with a couple of limited options to also edit images.[2] It was originally based on GQView, and is designed to have a clean, simple interface. It integrates well with the GNOME desktop environment.

gThumb is free and open-source, written in C and subject to the terms of the GNU General Public License (GPL).


gThumb allows the filesystem to be browsed for images. They can be organized into catalogs, or viewed as a slideshow. Folders and catalogs can be bookmarked, and comments may be added to images.

Via gPhoto it can also acquire data directly from digital cameras.

gThumb offers a certain range of image editing operations suited for digital photographs, such as the change of image hue, saturation, lightness, contrast or the adjustment of colors. It can also crop, scale and rotate images by 90° or custom angles, and it features a red-eye removal function. Manipulated images can be saved in the formats JPEG, PNG, TIFF and TGA.

gThumb can export web-based albums with various theme templates. These albums can be uploaded to a website, providing a very simple mechanism for publishing collections of photos on the web.

gThumb also includes many basic features such as copying, moving, deleting or duplicating images, printing, zooming, format conversion, and batch renaming.


The first public version was 0.2 in 2001. Starting from version 2.12.0 gThumb allows you to export photos to various websites. Version 3.0.0 is based on GTK+ version 3, and supports high quality SVG zoom.[clarification needed][3]

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