uberspace.de (npub19lm…m6sc) Too bad there's no HTTP/3 on uberspace. Is this on your roadmap? :)
TIL that there are DNS HTTPS records you can use to signal that your webserver supports HTTP/3 (and ECH).
If the browser sees a HTTPS record indicating HTTP/3 support it can use that on the first connection, speeding up the load.
Max Inden (npub15mh…h268) built a great website for it where you can also test if that record is set for your site: https://savearoundtrip.com