@cstanhope Yeah! I use hashify.me to write #HPR show notes. Write markdown on the left, see the live preview on the right, when I'm satisfied, I just mark all the text on the right, "View source of selection", and copy and paste the generated HTML into the show notes form.
hashify.me is an even crazier hack than this though. The original thought was "hey, I can be evil and hijack URL shorteners to store my data", and then there's of course a limit to how long URLs they tolerate.
The built in "generate a bit.ly URL for this" works around it by allowing two levels of shortening.
So for a huge document, you get a bit.ly URL that points to a hashify.me document that is just a bunch of bit.ly URLs, and then it looks them up and expands them. :-D
I didn't write it, but somewhere quite a ways down on my list of things I'd like to do, is rewrite this to use the URL fragment instead of the URL context, so that (1) the server doesn't get all our documents (the server doesn't need it, the client side does all the processing) and (2) it could be hosted on e.g. ipfs.
I learned about it way back when at https://news.ycombinator.com/item?id=2464213 .