You can take a screenshot in a specific area of the window, your whole screen, or even a web site - apply different effects to it, use it to select points, and then upload the image to hosting site, all within one window.
Sorry for the spelling and phonetic errors in the text.
Owner and main writer of MintGuide.org is not a native English speaker.
Installation into Linux Mint:
sudo apt install -y shutter libgoo-canvas-perl
sudo add-apt-repository ppa:shutter-testing-team/ppa sudo apt update sudo apt install shutter libgoo-canvas-perl
sudo add-apt-repository ppa:shutter-testing-team/dailybuilds sudo apt update sudo apt install shutter libgoo-canvas-perl
I added to the installation package libgoo-canvas-perl, it is necessary to allow editing made snapshot