That being said, when looking at your actual website initially with no context, I couldn't really figure out what it did. My first instinct was to hit the "Docs" button.
The "Don't README" header and the just download my code and run it and figure out how it works later mantra with regard to an end-to-end encryption software (or software in general) was very off-putting to me. I actually wasn't very interested in figuring out what your software did at that point, as it just was flashing red-flag in my head. Was it malware? Was it really end-to-end encrypted?
Just a suggestion, you might want to reword some of that front landing page of the Docs page. I understand your wanting to convey that it "just works", but you might want to convey a bit better somehow what exactly what is just working in the first place, and do so in a way that isn't screaming "don't try to figure out how it's working". Maybe also advertise a bit more clearly that it's open source.
The whole "unless you really want to" is a little weird, too. Every end-to-end encryption software you use you should understand fully what encryption is being used, especially when targeting developers handling core secrets for major organizations or what have you.