> For the complete documentation index, see [llms.txt](https://www.fullstackfirebase.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.fullstackfirebase.com/firebase-authentication.md).

# Firebase Authentication

- [Introduction](https://www.fullstackfirebase.com/firebase-authentication/introduction.md)
- [Walkthrough](https://www.fullstackfirebase.com/firebase-authentication/walkthrough.md)
- [Challenge](https://www.fullstackfirebase.com/firebase-authentication/challenge.md)
- [Notes](https://www.fullstackfirebase.com/firebase-authentication/notes.md)