Ubuntu Resize An Image. If you want to remove the software you can do so through the ubuntu software manager or by using the following command in the terminal. All through the ubuntu command line.
Select file save. Sudo apt get remove gthumb using converseen. The other is rotate image.
Other available file explorers for linux such as dolphin let you convert or resize images directly with a right click.
All through the ubuntu command line. The convert command can also quickly resize an image. Another option is select view original image and drag the corners of the image to resize it. As you can see there are quite a few options tucked into the save dialog.