> For the complete documentation index, see [llms.txt](https://http3-explained.haxx.se/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://http3-explained.haxx.se/readme.md).

# README

**HTTP/3 explained** is a collaborative effort to document the HTTP/3 and the QUIC protocols. Join in and help!

Get the Web or PDF versions on [http3-explained.haxx.se](https://http3-explained.haxx.se/).

The contents get updated automatically on every commit to this git repository.

![HTTP/3 explained cover](/files/-LvW3CUoDXkyB-gANFOO)