Open Library is a public, open catalog run by the Internet Archive. Its goal is simple, one web page for every book ever published. Anyone can search by subject, author, or lists, and readers can help fix or add book records through a wiki style edit button.
Readers can borrow digitized books through a model that mirrors physical lending. You create a free account, find a title with an available digital edition, and read it in your browser. Loans are limited to one reader at a time, you can check out up to ten books, and typical loan periods are one hour for browsing or fourteen days for full borrowing. Holds and early returns are supported, and most borrowable titles also offer an audio mode.
Open Library also serves readers who cannot use standard print. It offers DAISY accessible books and information about eligibility for protected DAISY files through the U.S. National Library Service, along with links to more accessible reading options.
To explore and track reading, Open Library provides Library Explorer digital shelves, a reading log, user lists, a K 12 collection, and full text search across millions of scanned pages.
For developers and researchers, Open Library exposes structured data through RESTful APIs and publishes monthly data dumps of works, editions, authors, and more. These resources allow programmatic access to the catalog and support external projects.
Important legal context: Open Library’s lending operates within the Internet Archive’s controlled digital lending program. After court rulings against the Archive in Hachette v. Internet Archive were affirmed on appeal, the Archive chose in December 2024 not to seek Supreme Court review and now honors publisher takedown requests, which can limit which books remain lendable.
Open Library – About Us
Explains the mission, open editing model, and that Open Library is a project of the Internet Archive supported by public and philanthropic funders.
Open Library – Borrowing Books Through Open Library
How lending works, including account setup, reading in browser, audio option, loan limits of ten books, and loan periods of one hour or fourteen days.
Open Library – APIs – 2025
Overview of RESTful APIs, JSON and RDF outputs, endpoints for works, editions, authors, search inside, covers, and guidance on rate limiting and identification.
Internet Archive Blog – End of Hachette v. Internet Archive – 2024
Announces that the Internet Archive will not seek Supreme Court review and will continue complying with publisher requests to remove certain books from lending.
Wikipedia – Hachette v. Internet Archive
Case history and outcome, including the September 2024 appellate decision affirming the district court and the end of further appeal in December 2024.
Controlled Digital Lending – FAQs
Neutral description of controlled digital lending, the one copy owned to one copy loaned principle, and technical access controls.
Reuters – Major book publishers defeat Internet Archive appeal over digital scanning – September 4, 2024
News report on the Second Circuit decision against the Internet Archive’s appeal in the e book lending case.
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