gThumb - image viewer and manager

gThumb is a free and open source program for viewing and organizing images in Linux

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gThumb is a program for viewing, editing and organizing images;
It has good integration with the GNOME 3 desktop;
Supported image formats: BMP, JPEG, GIF, PNG, TIFF, TGA, ICO, XPM, JXL, AVIF, RAW and HDR (with high dynamic range);
It is possible to sort images by: aspect ratio, date of capture, size, file modification date, file name, file path, file size, without sorting and the option “in reverse order”;
There is an export and import: Flickr, removable device and folder;
It is possible to search for duplicates;
It is possible to view the properties of images.

Changing/Editing images:

Saving in formats: JPEG, PNG, TGA, TIFF and WebP;
Automatic contrast adjustment;
Changing brightness, contrast, saturation and gamma level;
Focus Gain;
Shades of Grey;
Changing colors;
Special effects: desert, cherry, soil, arctic, fresh blue, mango, warmer, colder, vintage, ridge, vignette, blurred edges, negative;
Choosing a color from an image;
Removing the “red eye” effect;
Rotation: 90 degrees clockwise/counterclockwise, horizontal/vertical image display, rotation;
Resizing and cropping.

The software gThumb is available for installation on Linux.

Installation method	OS
PPA	Ubuntu* 16.04/18.04/19.04/20.04, Linux Mint 18/19, Debian
Deb	Ubuntu* 16.04/18.04/19.04/20.04, Linux Mint 18/19, Debian
RPM	openSUSE, Rosa Linux, Mageia, ALT Linux, Fedora, CentOS, Red Hat Enterprise Linux and others
Flatpak	Ubuntu, Linux Mint, Debian, Arch Linux, Fedora, CentOS, KDE Neon, openSUSE, elementary OS, Manjaro, Red Hat Enterprise Linux

*Ubuntu (GNOME), Kubuntu (KDE), Xubuntu (XFCE), Lubuntu (LXDE)

Install Software via PPA repository

sudo add-apt-repository ppa:ubuntuhandbook1/apps
sudo apt-get update
sudo apt-get install gthumb

Install Software via Deb package

Install Software via RPM package

Install Software via Flatpak package

flatpak install flathub org.gnome.gThumb

Language Interface:	English, Russian, Deutsch, Spanish, French and others
Description version:	3.12.0
Developer:	Free Software Foundation, Inc.
Programming language:	Python
License:	GPL v2
Software website:	wiki.gnome.org/Apps/Gthumb