I use this add-on. It doesn’t automatically turn on for every website but you get to choose which domains it works for and which domains it doesn’t.
Technically, you can enable it anywhere by using Redirector to prepend about:reader?url=
to the URL, with a sort of white/blacklisting system using Regex. It may or may not be able to show a useful content summary, of course. There is a pretty accurate algorithm built into Firefox that evaluates if it does, and shows or hides the address bar button accordingly. Maybe an add-on can leech of the result of this algorithm?
i need this on mobile
Does it not work on mobile?
are there extensions on mobile FF?
Yes, but not all of them work
i dont even see an extensions on mobile
I'd love that too, wrote about it some time ago: https://jeena.net/notes/1373
Will check out this addon .
Firefox
A place to discuss the news and latest developments on the open-source browser Firefox