HSReplay is a replay format for Hearthstone.
It is an XML-based format, with a structure closely mirroring that of the game's protocol.
The extension for HSReplay files is
The MIME Type is
Spec docs are available here.
Documentation for the Hearthstone Gamestate Protocol, which HSReplay mirrors, is available here.
There is currently only one official implementation of the HSReplay format:
- https://github.com/HearthSim/python-hsreplay (read, write)
If you are interested in developing reference implementations in other languages, please get in touch by filing an issue!
The HSReplay spec is licensed CC0. This puts it in the public domain. The full license text is available in the LICENSE file.