Take screenshots in Firefox at the click of a button

Firefox users can take advantage of a built-in screenshot tool.

Keep forgetting that keyboard shortcut you need to take screenshots? With Firefox, you don't need one. Since Version 55, the browser has come with a handy built-in screenshot tool. 

To activate the tool, all you need to do is type "about:config" in the browser's address field, and confirm that you've read the security warning. Then, in the search bar, type "extensions.screenshots.system-disabled." In the "Value" column, double click the word "true" to change it to "false."