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
Emma Zühlcke
npub1cl…h5gpf
2026-06-09 16:19:56 UTC
Author Public Key
npub1clfuyka6n2rt63rzf5ppm5zr28k76e85n23v5qsud2nvrur2dmssrh5gpfSeen on
wss://relay.momostr.pinkPublished at
2026-06-09 16:19:56 UTCEvent JSON
{
"id": "5891d53f6ec591e4cfacba2df2dd7e0c8a392f27ab994aa3d0928352853c89a5",
"pubkey": "c7d3c25bba9a86bd44624d021dd04351eded64f49aa2ca021c6aa6c1f06a6ee1",
"created_at": 1781021996,
"kind": 1,
"tags": [
[
"proxy",
"https://chaos.social/@emz/116721057551353811",
"web"
],
[
"p",
"a6eea4446a746afeb74b267e99ee4fed462c2989a23b06290b0417da9ad82a76"
],
[
"proxy",
"https://chaos.social/users/emz/statuses/116721057551353811",
"activitypub"
],
[
"L",
"pink.momostr"
],
[
"l",
"pink.momostr.activitypub:https://chaos.social/users/emz/statuses/116721057551353811",
"pink.momostr"
],
[
"-"
]
],
"content": "TIL that there are DNS HTTPS records you can use to signal that your webserver supports HTTP/3 (and ECH).\n\nIf the browser sees a HTTPS record indicating HTTP/3 support it can use that on the first connection, speeding up the load.\n\nnostr:npub15mh2g3r2w340ad6tyelfnmj0a4rzc2vf5gasv2gtqsta4xkc9fmq7ch268 built a great website for it where you can also test if that record is set for your site: https://savearoundtrip.com",
"sig": "cbfafab01172fba891ba3787101aff045be8230f7c166b2e6e8e1a8109ec6dc8dca6453ad5f3ab3baf3a71f171c9e4ae973ad0c237b0ed2f8ef716e2f225e105"
}