I don't want a badly trained CNN accidentally removing relevant content from the page, though. The CSS selector solutions are deterministic, and you can't just

I don't want a badly trained CNN accidentally removing relevant content from the page, though. The CSS selector solutions are deterministic, and you can't just throw ML at every damn thing you see. Also, the problem with OCR/CNN solutions are that you have to render ahead (i.e. parts of the page that you haven't scrolled to yet) to remove ads without being disruptive to the website's content flow.