Professor X – Get this Extension for 🦊 Firefox (en-US)The Professor X Extension let's you see inside a page's head without viewing the sourcecode. Once installed the Professor X command is available by right-clicking as well as in the Tools menu. When applied to a page it will display the contents of the page's head element, including Meta, Script and Style content. This can help you see how a website was constructed without having to go back and for
