This article will teach you how to take a screenshot in Steam and on a Steam Deck. It will also cover how to view your screenshots and how to change the screenshot button.
How to Take a Screenshot in a Steam Game (Easy!)
It is possible to take screenshots using the same method as taking a screenshot on Windows, but this method is easier within Steam. Here is how to take a screenshot on Steam.
On Steam, open the game you want to play.
When you find the moment you want to take a screenshot, press F12.