Library Extension

Library Extension helps readers check library availability while browsing for books.

libraryextension.com
Library Extension homepage screenshot

About Library Extension

Library Extension is a browser extension for Chrome, Firefox, and Edge that shows book and e-book availability from local libraries while browsing online.

When viewing a title on sites such as Amazon.com, Goodreads.com, World of Books, AwesomeBooks, and Open Library, it checks the online catalogs of selected libraries and shows matching items on the same page. Users can select one or more libraries from thousands of supported libraries and library systems, and follow a link to reserve a title. If a library is not listed, users can ask for it to be added.

Installation involves adding the extension and choosing libraries, with no signup required. It suits readers who browse for books online and want to check library holdings before buying or borrowing.

Key features

  • Shows book and e-book availability while browsing book sites
  • Available for Chrome, Firefox, and Edge
  • Supports checking one or more libraries at once
  • Links to reserve titles from the library catalog
  • Works on Amazon, Goodreads, and other book sites
  • No signup required to install and use
Best for: Readers who browse books online and want to check local library availability before buying.
Good for
  • Works on three major browsers
  • Checks multiple libraries at once
  • No account or signup required
  • Covers thousands of libraries and systems
Watch out for
  • Results depend on library being supported
  • Requires installing a browser extension

Library Extension at a glance

Type
Website
Pricing
Free
Platforms
Browser extension, Web
Open source
Not stated
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026

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Library Extension FAQ

What does Library Extension do?
It checks selected library catalogs and shows book and e-book availability on the page while browsing book sites.
Which browsers does Library Extension support?
It offers versions for Chrome, Firefox, and Edge.
Do I need an account to use Library Extension?
No. The site states no signup is required; users install the extension and select libraries.
What if my library is not listed?
The site invites users to contact them to request that a library be added.
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