Performance Panel – The Performance tool gives you insight into your site’s general responsiveness, JavaScript and layout performance.
Memory Panel – The Memory tool lets you take a snapshot of the current tab’s memory heap.
Web Audio Editor, Shader Editor and Canvas – Developer Tools for debugging media-rich content on the web.
Storage Inspector– The Storage Inspector enables you to inspect various types of storagethat a web page can use (cache, cookies, local & session storage, indexedDB).
Responsive Design Mode – Responsive Design Mode makes it easy to see how your website or web app will look on different screen>
Animation Inspector– The Animation Inspector displays animations in the page synchronized along a timeline, with a draggable widget you can use to move to any point in the timeline and see the page at that point.