Integration of the NDL Online and NDL Search web services

The National Diet Library, Japan, (the NDL) plans to integrate two of its current web services: the National Diet Library Online Search and Request Service (NDL Online) and the NDL Search. These two will be launched as a new NDL Search web service in January 2024.
Information about the new NDL Search can be found on this page.
This is where we will publish information on things to keep in mind about the system switchover as well as up-to-date information on temporary suspension of services.

• News
• Main Points of Renewal (About New NDL Search)
• About Providing Japanese National Bibliography, etc.
• About the NDL National Union Catalog Network
• Changes affecting API to the current NDL Search
• Notice of Temporary Suspension of Services
• Frequently Asked Questions
• Contact Information

• 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 will be integrated into the current NDL Search and relaunched as the new NDL Search.

* Screenshot subject to change.

1. We will integrate and improve our web services and make easier to search.
2. We will expand and enhance the information we provide in support of our patrons' pursuit of knowledge.
3. We will continue to provide our extensive bibliographic data and make easier to use.

More information about the new NDL Search will be provided in the following page.

• New NDL Search

The Materials Search for Persons with Disabilities service, which has been provided by the current NDL Search, will be launched as an official version of the National Diet Library Materials Search for Persons with Disabilities (Mina Search) Beta Version, which is currently available on a trial basis.

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 current NDL Search, please see the following page.

• NDL Search (in Japanese)

We anticipate that there could be some temporary suspension of our services. If this happens, the details will be posted on this page.

(The details will be updated as needed.)

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.