> For the complete documentation index, see [llms.txt](https://docs.wepin.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wepin.io/en/widget-integration/web-javascript-sdk/login-library.md).

# Login Library

This is a guide page on how to log in to Wepin using OAuth authentication tokens such as social login or email.