Search Site
This site uses cookies to deliver our services, improve performance, for analytics, and (if not signed in) for advertising. By using LibraryThing you acknowledge that you have read and understand our Terms of Service and Privacy Policy. Your use of the site and services is subject to these policies and terms.

LibraryThing Developer Profile

You must be logged into your LibraryThing account to sign up as a developer. If you don't have an account register now.

Terms and Conditions

Common Knowledge

LibraryThing data from our Common Knowledge project is covered by the Common Knowledge License, equivalent to the Creative Commons Attribution-Share Alike 3.0 Unported.

Some content in Common Knowledge may fail to meet standards of copyrightability, upon which the Creative Commons licenses are built. By agreeing to these terms, you agree to treat the Common Knowledge content as copyrightable, and therefore as falling fully under this license.

You agree not to hit the API more than once per second.


Image files provided through CoverThing may be used either non-commercially or commercially, provided that:

Nothing in this agreement shall be construed as touching on or limiting the use of original files uploaded to LibraryThing. For example, if you upload a cover to LibraryThing, you are completely free to use the original file elsewhere.

All services

By agreeing to these Terms and Conditions you agree to the following additional points:

About | Contact | Privacy/Terms | Help/FAQs | Blog | Store | APIs | TinyCat | Legacy Libraries | Early Reviewers | Common Knowledge | 170,357,323 books! | Top bar: Always visible