ShareX - Screenshot Tool
I could not make it through a day without this handy tool. I use ShareX all day.
ShareX is a free and open-source screenshot and screencast utility for Microsoft Windows..
ShareX can be used to capture full screen or partial screenshots, such as rectangle capture and window capture.
After capture, a screenshot can be exported as an image file or you can use the URL which is what I most commonly use -
It is such a time saver and really helps when you are trying to explain or demonstrate something to someone via email or a document.
You can download ShareX from the official site HERE