See this page fetch itself, byte by byte, over TLS

This page performs a live, annotated HTTPS request for its own source. It’s inspired by The Illustrated TLS 1.3 Connection and Julia Evans’ toy TLS 1.3.
It’s built on subtls, a pure-JS TLS 1.3 implementation that depends only on SubtleCrypto. Raw TCP traffic is carried via a simple WebSocket proxy.

Use HTTP/2

Key Raw bytes in hexadecimal. Outgoing message annotations. Incoming message annotations.

» Code on GitHub. Run bytebybyte.dev locally and try your own https:// and postgresql:// URLs. Made by @jawj.