Greasy Fork is available in English.
Open the original (largest) image in a new tab by pressing 'z' while hovering over a pin
< Commentaires sur Pinterest - Open Original Image
It looks like you're maybe using Safari browser, which I don't support. Try Firefox or Chrome with Tampermonkey. It still works for me.
Больше не работает
:( Не работает больше,ни на Tampermonkey, ни на MiddleMonkey,ни на другой какой Monky.