It is a very complex question. I'll note that after I paste formatted text into (say) Word, it's easy enough for me to change the font family globally while pre

It is a very complex question. I'll note that after I paste formatted text into (say) Word, it's easy enough for me to change the font family globally while preserving the rest of the text. But that doesn't help if I need to change the font size. My instincts want me to say that I want to preserve bold/italic/strikethrough and nothing else. I think my instincts are lying because as a human I want everything to be simple.