It actually seems to work, but will only show up greyed out on the jigsaw menu on main toolbar.

Easy to set and I can finally read longer articles comfortably on mobile.

Шрифты наезжают. Нет настроек для установки размера вертикального отступа внутри абзаца.

Simple and very effective. The "Access your data for all websites" is the reason I give only 4 stars which is a bit unfair before checking what type of our personal data it reads or store, but, I just forked on GitHub to learn more about it. Keep up the good work and Thank You.