Greasy Fork is available in English.
Alters attempts at fingerprinting your screen resolution to 1920x1080. Only tested in FIrefox.
< Feedback on Screen Resolution Spoof
It's not really possible to spoof div containers.
I'll see what I can do about the iframe.contentWindow properties though.
If you're using Firefox, in about:config, set "privacy.resistFingerprinting" to true and most of those iframe.contentWindow properties will return zero.
Browserleaks detects real screen size
https://browserleaks.com/javascript
'window.iframes' and a special div.clientWidth /div.clientHeight reports real screen size.