Not that I am aware of. I mean, I use no-script “capabilities” filters which disables eg objects, frames, fetch, webgl, fonts and other stuff, but I don’t know any “intelligent” addon which understand what a script does and if it can be disabled without any harm to site functioning. I don’t really think anything like that exists.
Is there a viable way to block only unnecessary js, while loading the minimum necessary to properly render the sites?
Not that I am aware of. I mean, I use no-script “capabilities” filters which disables eg objects, frames, fetch, webgl, fonts and other stuff, but I don’t know any “intelligent” addon which understand what a script does and if it can be disabled without any harm to site functioning. I don’t really think anything like that exists.