Dec-30-2020 - ISBNdb now offers credit card payments via Stripe

We are happy to announce that we now allow users to use credit cards for their ISBNdb subscriptions and a paypal account is no longer required.  

Dec-08-2020 - New Academic and Non Profit Plans

We are excited to announce discounted Academic and Non Profit plans for students, educational institutions, and non profits.  For only $5 USD monthly, the academic and non profit communities can get access to the full ISBNdb database.  To enroll in an Academic plan, click on the ISBN database link in the header, scroll to the bottom and sign up.  Please note the Academic plan includes all the same features as the standard Basic plan, but with a lower daily call limit. 

Dec-03-2020 - Subscribers Now Get Full Access to Website Data

As a subscriber, not only do you get access to the data API but when logged in to you can search and get all data for any book we have directly on the website.

Nov-23-2020 - Higher API Request Limits for Premium and Pro Plans

We just deployed higher API request limits for Premium and Pro plans.   All Basic Plans will continue to have a 1 request per second limit, Premium Plans will have a 3 request per second limit, and Pro Plans will have a 5 request per second limit.  The existing daily call limits continue to apply to any 24 hour period.  For details on how to implement higher per second requests for Premium and Pro plans please see our API documentation.   Thank you for your continued support.

Aug-26-2020 - 25 Million ISBNs
ISBNdb is excited to reach a new milestone, with over 25,000,000 isbns now available in our database. Our updated crawlers continue to add data at a rapid clip, with the most recent 1 million ISBNs added in just over 2 months.
Jun-11-2020 - ISBNdb Increases to 24+ Million Books

The database continues to grow, increasing to over 24 million unique isbns and growing rapidly.   Our revamped crawlers are adding new isbns and adding new data points to existing books at a fast clip.

May-13-2020 - API 1.0 Discontinued

API 1.0 is no longer live, please ensure your code is formatted correctly according to the API 2.0 documentation available at  All existing API keys will work so there is no need to make any other changes.  If you were subscribed to an older plan, your billing rate will be grandfathered in unless you cancel or switch plans.

Apr-23-2020 - API 1.0 Will No Longer Be Supported

Effective April 23 2020, we will no longer offer support for API 1.0.  You can continue to use the old API if you have an old plan, but we won't be offering any updates or support so if there are any technical issues you should upgrade to API 2.0.  You can switch plans in your dashboard at any time. 

Mar-25-2020 - Crawler Updates Deployed

We updated our crawlers to gather more data faster, and expanded our data sources.   Not only will we add new books at a faster rate, but any missing data for existing books will be added to the database faster as well.  

Jan-07-2020 - ISBNdb reaches 23 million books

Our crawlers have been hard at work and we are now up to 23 million unique ISBNs in our database.