Login Method for NDL Search and Related Services Changed on June 17, 2026. For further details, please refer to the Notice.
Detailed Search
A number of search parameters are available. You can use several of them to perform highly accurate searches.
Research Navi
Introduces information useful for research, such as points of research, reference materials and websites.
E-Journals & Databases
Information of e-journals and various databases that are available on the National Diet Library premises.
News
About NDL Search
NDL Search allows you to search for materials and digital materials held by the National Diet Library,
You can request for browsing or copying, and use a variety of other services.
You can also search for materials held by libraries in Japan with which has data linked.
Searchable Materials
Materials held by the National Diet Library
Searches will be performed on materials held by and digital materials available at the National Diet Library.
Searchable Materials
- Materials held by the National Diet Library (printed matter, recording media, microforms, etc.)
- Digital materials at the National Diet Library, including those that can only be accessed at the library
- E-journals, etc. subscribed to by the National Diet Library
Collections of libraries nationwide
You can search for materials and digital materials held by libraries across the country that have data links.
Libraries that can be searched
- Prefectural libraries and government-designated city libraries (including digital archives)
- Special libraries (including digital archives)
- Academic information institutions (including digital archives)
- Publication information on paper books and e-books
For more information, please see List of Affiliated Databases for details.
Materials that can be accessed via the Internet
The National Diet Library and other libraries have digital materials that can be read on the Internet.
Searchable Materials
- Digital materials at the National Diet Library that can be accessed via the Internet, including materials that require user registration
- Digital materials that can be accessed via the Internet from libraries in Japan with which the NDL has data linkage
- Articles from J-STAGE, IRDB, and CiNii Research that can be accessed via the Internet
Access materials you want to read via the most appropriate means
Reading materials on the Internet
Available online :This tag is applied to digital materials that are available online (User registration may be required.)
Request a copy of the material
National Diet Library :As for some of the materials with this tag, you can order photocopy without visiting the National Diet Library (remote photoduplication, fee required). To use this service, you need to become a Registered User of the National Diet Library.
- What is remote photoduplication (courier or postal mail / PDF)?
- Scope of remote photoduplication
Other Libraries in Japan :If you would like to use materials with this tag, please contact your local library.
Read materials at the library
National Diet Library :This tag is applied to some materials that may be browsed in person by visiting the National Diet Library.
Other Libraries in Japan :If you would like to use materials with this tag, please contact your local library
List of Online Services
Mina Search was designed specifically to help those who are blind, visually impaired, dyslexic, or otherwise print disabled to search for and download reading materials in braille, DAISY, or other accessible format. Full-text data of digitized materials is also available.
This service allows users to search for and browse digitized materials that have been acquired and preserved by the National Diet Library. You can search for and browse materials with expired copyright protection or which are difficult to obtain for reasons such as being out of print, etc., from your personal devices.
This site allows you to search and browse websites in Japan that have been collected since 2002. The role of the Web Archiving Project (WARP) is to collect, preserve, and pass on to the future information on websites that are easily lost.
Search the National Diet Library's collection (tangible materials) for materials published in Japan and Japanese materials published abroad, and download bibliographic data in MARC, TSV, and other formats.