# Library Extension

> The #1 Browser Extension that lets you instantly see book and eBook availability from your local library

As you browse books and e-books, the Library Extension checks your library's online catalog and displays the availability of matching items on the same page. Available as a free browser extension for Chrome, Firefox, and Edge.

## Docs

- [Frequently Asked Questions](https://www.libraryextension.com/frequently-asked-questions/): Questions and answers about how Library Extension works, supported libraries, and digital catalog providers.
- [Help](https://www.libraryextension.com/help/): Installation, configuration, and troubleshooting articles.
- [Supported Libraries](https://www.libraryextension.com/supported-libraries/): Searchable list of public library systems and consortiums Library Extension supports.
- [Supported Sites](https://www.libraryextension.com/supported-sites/): List of book-related websites -- retailers, audiobook platforms, and book communities -- Library Extension works on.