Here is how to change text on a website, using F12 and Inspect Element, to create fake screenshots to amuse your friends.
Essentially, a how to edit website text using Google Chrome.

1) Open a browser and navigate to a webpage you want to edit.
2) Then press F12 to open the Inspect Element.
3) In the Console, enter the following command.
document.designMode=”on”

Xybernetics Google Chrome Inspect Element document.designMode on

4) Click anywhere in the webpage and start editing it.

Reference