How to Geek: “Firefox has a built-in screenshot tool, allowing you to capture areas on your screen or entire web pages in a few clicks. The feature isn’t perfect, though, and now Mozilla is testing an improved version in the latest Firefox Nightly builds. Mozilla has now enabled the updated Screenshots feature in Firefox Nightly, the experimental branch of the web browser intended for testing features and other changes before they are rolled out to all Firefox users. The original screenshot feature was essentially a browser extension built into Firefox, which made it easy for Mozilla to work on and improve over time, but that meant it had most of the same limitations as other Firefox extensions. For example, it didn’t work on “about:config” and other Firefox settings and options pages, because browser extensions are blocked from those pages for security reasons. Mozilla says the new screenshot tool has improved performance, better keyboard and visual accessibility, and the ability to capture all pages in Firefox. The keyboard shortcut for opening it remains unchanged (Cmd+Shift+S on Mac, Ctrl+Shift+S on other platforms), and it’s still accessible in the right-click context menu and the optional screenshot button in the browser toolbar…”