It would be so, so easy to guard against this if they would just give people:

about:tabs

... which would be a plain text listing of all the URLs of all the tabs you have open.

You could just copy and paste it to a file or whatever.

Instead, we need to dig several directories deep into /Library (or whatever, depending on OS) and then use JSON tools to export ... I've already lost most people.

Go search for "how can I export tabs" or "how can I save tab urls" and you'll see thousands of people trying (usually in vain) to achieve this very, very simple thing.

Here is our $500 bounty for this:

https://news.ycombinator.com/item?id=28129829

... and no, I don't want to install an extension. This should be built into the browser.