It also looks at how to view your screenshots and how to change the screenshot button.
Heres how to take a screenshot on Steam.
The following steps apply to both Windows and macOS users of Steam.

On Steam, fire up the game you want to play.
When you find the moment you wish to screenshot, pressF12.
On MacBook Pros with a Touch Bar, youll need to pressFnandF12.

Steam will save the screenshot.
Press theSteambutton and theRight Bumper (R1)to take a screenshot.
To view images, pressSteam, and then selectMedia.

Heres how to view your screenshots on Steam.
On Steam, clickView.
Browse through the Screenshot Manager to find the screenshot you want to view.

Upload the image to your Steam cloud storage by clickingUploador delete it by clicking the trash can icon.
All Steam users have 20GB of cloud storage to upload screenshots to.
Heres how to change the screenshot button on Steam:
In the Screenshot Manager, smack the cog icon.

Scroll down and clickScreenshotshortcutkeyand tap the key you wish to change it to.
terminate the window to save the changes.
Here are some examples of why you might wish to take a screenshot.