Install giftrans by entering the following commands in the terminal:
sudo apt update sudo apt install giftrans
Description:
Convert any GIF file into a GIF89a
Allows for setting a specific transparent or background color of GIF images as well as changing colors, adding or removing comments. Also provides the ability to analyze GIF contents.
Homepage: https://www.abdn.ac.uk/tools/ibmpc/giftrans/index.hti
Version: 1.12.2-19
Section: universe/graphics