> For the complete documentation index, see [llms.txt](https://http2-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://http2-explained.haxx.se/en.md).

# English

This is a detailed document describing HTTP/2 ([RFC 7540](https://httpwg.github.io/specs/rfc7540.html)), the background, concepts, protocol and something about existing implementations and what the future might hold.

See <https://daniel.haxx.se/http2/> for the canonical home for this project.

See <https://github.com/bagder/http2-explained> for the source code of all book contents.

## CONTRIBUTING

I encourage and welcome help and contributions from anyone who may have improvements to offer. We accept [pull requests](https://github.com/bagder/http2-explained/pulls), but you can also just file [issues](https://github.com/bagder/http2-explained/issues) or send email to <daniel-http2@haxx.se> with your suggestions!

/ Daniel Stenberg