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gThumb

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GThumb
Original authorPaolo Bacchilega
DeveloperThe GNOME Project
Release2001; 25 years ago (2001)
Stable release
4.0[1] Edit this on Wikidata / 28 September 2026; 1 day ago (28 September 2026)
Written inC (GTK)
Operating systemUnix-like
Type
LicenseGPL-2.0-or-later
Websitewiki.gnome.org/Apps/Gthumb
Repository

gThumb is a free and open-source image viewer and image organizer with options to edit images.[2] It is designed to have a clean and simple user interface and follows the GNOME Human Interface Guidelines and integrates well with the GNOME desktop environment.

Features

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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 can 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 photography, such as the change of image hue, saturation, lightness, contrast or the adjustment of colors and sharpness. It can also crop, scale and rotate images by 90° or custom angles, and it features a red-eye effect removal function. Manipulated images can be saved in the formats JPEG, PNG, TIFF, .tga, avif, heif and WebP.[3]

gThumb can export web-based photograph 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 transcoding, and batch renaming.

Can read and write Exif, XMP, IPTC metadata.[4]

Provides a system of extensions (or plug-ins), to allow users to extend the functionality of gThumb,[5] ability to call external scripts created in any language.[4][6]

Dependencies

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gThumb 4.0 requires glib, gtk, libpng, zlib, libjpeg, exiv2, lcms2, gstreamer, gstreamer-plugins-base, gstreamer-video, gsettings-desktop-schemas.[7] Libraries that are not mandatory but possible include , LibTIFF, LibRaw, librsvg, libwebp, JPEG XL's libjxl, libheif, libgif, and colord.[7]

History

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The first public version was 0.2 in 2001.

It was originally based on GQView. Starting from version 2.12.0 gThumb allows users to export images to various websites. Version 3.0.0 is based on GTK version 3, and supports high quality SVG zoom.[8]

In September 2026 version 4.0 released. In this version the application is ported to GTK 4/Libadwaita.[9]

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See also

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Further reading

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  • Bärwaldt, Erik (2015). "Jack of all trades: using gThumb to view, process, and present images". Ubuntu User (27/2015). Linux New Media USA. Retrieved 2023-06-27.

References

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  1. ↑ Paolo Bacchilega (28 September 2026). "4.0". Retrieved 29 September 2026.
  2. ↑ "gThumb Brings Better Photo Browsing and Importing to Linux Archived 2018-11-06 at the Wayback Machine". Lifehacker, 14 June 2010. Accessed 21 March 2017
  3. ↑ "[gthumb-list] gThumb 3.1.1 released". Archived from the original on 19 April 2023. Retrieved 2 May 2020.
  4. 1 2 "About gThumb". help.gnome.org. Retrieved 2025-05-21.
  5. ↑ "Extending gThumb". help.gnome.org. Archived from the original on 2025-05-22. Retrieved 2025-05-21. Some standard features are implemented as extensions and are supplied with the standard distribution. Users may write (and share) additional extensions
  6. ↑ "Vitaly Zdanevich / upload_to_commons_with_categories_from_iptc · GitLab". GitLab. Archived from the original on 2025-05-22. Retrieved 2025-05-21.
  7. 1 2 "gthumb". gitlab.gnome.org. Dependencies. Retrieved September 29, 2026.
  8. ↑ "GTHUMB". Archived from the original on 2025-04-03. Retrieved 2025-08-09.
  9. ↑ Sneddon, Joey (September 29, 2026). "gThumb 4.0 has been released, and it looks like a brand new app". OMG! Ubuntu. Retrieved 2026-09-29.
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