How to install gThumb on Ubuntu 20.04 – A Image Viewer for Linux

gThumb is a free and open-source image viewer, editor, browser and organizer. It is designed to be well integrated with the GNOME desktop environment. As an image viewer gThumb allows to view common image file formats such as BMP, JPEG, GIF (including the animations), PNG, TIFF, TGA and RAW images.

It is also possible to view various metadata types embedded inside an image such as EXIF, IPTC and XMP. As an image editor gThumb allows to scale, rotate and crop the images, change the saturation, lightness, contrast as well as other color transformations.

As an image browser gThumb shows the thumbnails of the images saved on your disk, allows to perform the common operations of a file manager such as copy, move and delete files and folders.

Furthermore there is a series of image specific tools such as JPEG lossless transformations, format conversion, image resize, slideshow, setting an image as desktop background and several others. gThumb allows to add comments and other metadata to images, organize images in catalogs and catalogs in libraries, search for images and save the result as a catalog.

gThumb also includes many basic features such as duplicating images, zooming, printing, format transcoding, and batch renaming.

Key Features of gThumb

  • Free and Open-Source
  • Copy, move, delete images and folders
  • View in fullscreen mode
  • Add comments to images
  • Automatically update the content of a folder
  • Crop images
  • Scale and rotate images
  • Save images in the various formats such as JPEG, PNG, TIFF, TGA

For the source, you can refer the GitHub page.

Installing gThumb from Ubuntu apt repository

gThumb is included in Ubuntu 20.04. Follow the step by step guide to install the application.

Step #1

Type the following command to update the apt sources.

$ sudo apt update

Step #2

Now execute this command to install the gThumb package.

$ sudo apt install gthumb

With the help of && you can write both the commands in a single line. Something like this:

$ sudo apt update && sudo apt install gthumb

At this step, you have successfully installed gThumb on Ubuntu 20.04 system.

If you are not comfortable with the command line, open Ubuntu Software, search for “gThumb” and install the application.

Starting gThumb

gThumb can be launched from the command line by typing gthumb or In the Activities search bar type “gThumb” and click on the icon.

gThumb User Interface:

How to Uninstall gThumb from Ubuntu 20.04

For some reason, If you want to uninstall gThumb, type the following command.

$ sudo apt remove gthumb


I hope that now you have a good understanding of How to install gThumb on Ubuntu 20.04 LTS Focal Fossa.

If anyone does have any questions about what we covered in this guide then feel free to ask in the comment section below and I will do my best to answer those.

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