Integration of the NDL Online and NDL Search web services

The National Diet Library (NDL), Japan, has integrated two of its web services—the National Diet Library Online Search and Request Service (NDL Online) and the NDL Search—and launched them as the new NDL Search web service on January 5, 2024.
Information about the new NDL Search can be found on this page.

* Pages related to integration are no longer being updated.
For the latest information, please refer to "News" or "Help" in the new NDL Search.

• News
• Main Points of Renewal (About New NDL Search)
• About Providing Japanese National Bibliography, etc.
• About the NDL National Union Catalog Network
• Changes affecting the NDL Search API
• To all NDL registered users
• Frequently Asked Questions
• Contact Information

• The new NDL Search launched. (January 5, 2024)
• "Providing Japanese National Bibliography, etc." page has been updated. (January 5, 2024)
• "To all NDL registered users" has been updated. (December 15, 2023)
• "New NDL Search" page has been updated. (December 15, 2023)
• "Frequently Asked Questions" has been updated. (December 15, 2023)
• "Providing Japanese National Bibliography, etc." page has been updated. (December 5, 2023)
• "Notice of Temporary Suspension of Services" has been updated. (October 20, 2023)
• "To all NDL registered users" has been added. (October 20, 2023)
• "Providing Japanese National Bibliography, etc." page has been updated. (October 20, 2023)
• "Frequently Asked Questions" has been updated. (October 20, 2023)
• Integration of the NDL Online and NDL Search web services page is now available. (August 31, 2023)

The functions and services of the NDL Online have been integrated into the NDL Search and relaunched as the new NDL Search.

* Actual screen may slightly differ.

1. We have integrated and improved our web services and made it easier to search.
2. We have expanded and enhanced the information we provide in support of our patrons' pursuit of knowledge.
3. We continue to provide our extensive bibliographic data and make easier to use.

More information about the new NDL Search is provided on the following page.

• New NDL Search

The Materials Search for Persons with Disabilities service, which had been a part of the NDL Search, has been launched as the new National Diet Library Materials Search for Persons with Disabilities (Mina Search).

We will continue to provide our bibliographic data, including the Japanese National Bibliography (standard bibliographic data for Japanese publications and foreign publications in Japanese acquired by the National Diet Library), in a way that is easier to use.

For more information about the Japanese National Bibliography, please see the following page.

• Providing Japanese National Bibliography, etc.

For information about the NDL National Union Catalog Network, please see the following page.

• NDL National Union Catalog Network (in Japanese)

For information about the change of API provided by the NDL Search, please see the following page.

• Information regarding NDL Search API changes

This is where we will publish information on things to keep in mind with the system switchover.

• Extension of expiry date of user information is not available via NDL Online, etc. during the year-end and New Year's holidays. (Posted October 20, 2023)
• About the "library which is often used" function in the NDL Search (in Japanese) (Linked December 15, 2023)
• About the changes to My List on NDL Online (Posted December 15, 2023, updated February 26, 2024 )

Your questions may have been asked before. Please check the following page.

• Help: Integration of the NDL Online and NDL Search web services

For inquiries about the new NDL Search, please use the Contact Us page.
When making an inquiry, please select the radio button labeled "Technical specifications of NDL Search" under the Description of Your Inquiry heading.