Outliner is a free browser extension that will outline the page, generating a table of contents for you by extracting all the headings in the page. You can quickly jump to any section in the page with a single click. You can also set the settings for your outline by specifying the depth (number of headings) and the list of headings (the order in which they appear).

Simply activate it by clicking on the icon right beside your address bar and experience the convenience that the extension provides. And for your safety, rest assured that it won't track your activity and data while browsing through the internet.