So simple, so effective, so helpful.
We all copy paste. And since a lot of info is of a web page, we copy paste between browser and word processor. And then it's a PITA that your word processor decides that that "nice" font is something to keep. So nice actually, why not make it 50 pt? Oh, and that 10 cm line spacing? That is soooooooo brilliant that you too should share that with the rest of the world! And yes, of course you can do your "paste unformatted text" keyboard short cut. Know what it is? No..?
So just select your text, right click, and copy it with this extension. No silly fonts. No indents all over the place. No secret table placeholders. Just text. What you wanted to begin with. Satisfaction guaranteed! (Cheers erosman)