megapixels

[bitsandnumbers]

In terminal :

(remove app + config with --purge)
sudo apt remove --purge megapixels

(remove leftover dependencies)
sudo apt autoremove

(reinstall)
sudo apt install megapixels

or a oneliner just to remove and reinstall megapixels (you keep config and dependencies are not removed nor reinstalled - ie: they stay in place)
sudo apt-get -y remove megapixels && sudo apt-get -y install megapixels