[CrlNvl]

On FF, is there an extension that automatically turns on reader mode when you are reading an article?

[gizdan]

Yes. I've been using Automatic Reader View[0]. Though, to be honest, this should be an option directly in Firefox.

[0] https://addons.mozilla.org/en-US/firefox/addon/automatic-rea...

[forevercrashing]

Here’s another one: https://addons.mozilla.org/en-US/firefox/addon/auto-reader-v...