The AdBlock for Safari App has got two Safari App Extensions: one for basic ad blocking functionality, and a second one (comes together with the app) that sets an icon in Safari to manage ad blocking details for every single page. With this icon (at least in older versions – I'm not sure whether or not it's still there.) you could block elements of the page like pictures, frames etc. from beeing displayed or printed. That seems to be exactly what you are looking for.
Posts made by Logonaut
RE: macOS app idea
there's something that could heave up SR from a 4.99 to a 5.01 star rating: editing URLs within the SR app.
And to even top it all, you could create a little tool to import URLs and their referring tab names from the plain text output of the cells of a Numbers sheet, so we could automatically create URLs including all their variables (….html?X=xxx&Y=yyy etc.) in Numbers, and then export them to CSV that could be imported into SR. — It could have a price between, let's say, 2.99 or 4.99 €. (But, please, not such a price like EmailAddressExtractor which is definitely much too expensive. )