One report: what did this page actually do to me?
Over the last several releases the browser gained a set of tools for seeing what a page is really doing behind the scenes: what its scripts did, how much of everything it downloaded actually showed up on screen, and whether it tried to fingerprint you. This pulls them into a single report you can run on a saved page and get the whole picture at once - how many scripts it ran, how much of its download was pure weight that painted nothing, and how many times it tried to fingerprint you - all sealed into one result anyone can re-check offline. It is one honest answer to the question behind all of these tools: what did this page actually do to me?