There are internal local routes inside browsers which are used for debugging purposing by developers but one can find a use case for him selves. Play around with it to find something interesting.
Here are those internal routes/urls corresponding to the browser. Put it in url bar (omnibox/search bar) and hit enter.
chrome - chrome://chrome-urls/ firefox - about:about edge - edge://edge-urls/
I'm pretty sure that most of the browsers have this you can just google like this "[your browser name] internal urls"
Show HN: Browser's internal local routes containing juicy stuff
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