• User Guide
  • Our Services
  • Tokyo Main Library
  • Kansai-kan of the NDL
  • International Library of Children's Literature
  • Access
  • Photoduplication Service
  • User Registration
  • Online Services
  • List of Online Services
  • Legislative Information
  • Online Catalog
  • Digital Library
  • Search Guide
  • Online Gallery

Free Data Service

Bibliographic Data of the National Diet Library Digital Collections

The National Diet Library (NDL) provides basic metadata datasets of the NDL Digital Collections. These datasets include basic bibliographic data for books, periodicals, rare books, and old materials (title, volume, series title, edition, creator, publisher, publication year, ISBN or ISSN, extent (page number, size)) as well as for digitized images (URL and terms of use). There are also datasets of doctoral dissertations digitized by NDL (title, creator, university (degree grantor), year granted, URLs of digitized images and terms of use), as well as those of Historical Recordings Collection (product number, title, lyricist, composer, artist/performer, label name, release date, genre, and the URLs of digitized recordings).

  • (1)Metadata datasets of books, periodicals, rare books and old materials and doctoral dissertations are dated July 1, 2017. Those of Historical Recordings Collection are dated June 19, 2017. The information for bibliographic items, access restrictions, or other attributes is subject to change. For the latest information, please see the NDL Search or the NDL Digital Collections. Furthermore, NDL Search and the NDL Digital Collections support only a limited number of concurrent requests to prevent server overload. Access might not be available when web traffic is heavy.
  • (2)There are no restrictions on the use of these metadata datasets, except for digital images and digital recordings referenced by these metadata. NDL assumes no responsibility or liability for any actions taken as a result of using these datasets.
  • (3)Although the volumes and publication year indicate the first and the last year of digitized serials, this does not mean that all volumes published during the intervening years have been digitized, and some might be missing. There are two separate datasets, based on access restrictions: "Available only at the NDL and partner libraries" and "Available only at the NDL." When access restrictions differ across different volumes of a single serial, the titles are included in both datasets.
    Material type Access Restriction
    Available Online 1 Available only at the NDL and partner libraries 2 Available only at the NDL 3
    Books xlsx format: 26.0MB
    tsv format (zip): 11.0MB
    approx. 354,000 items
    xlsx format: 42.5MB
    tsv format (zip): 18.8MB
    approx. 553,000 items
    xlsx format: 4.9MB
    tsv format (zip): 2.0MB
    approx. 70,000 items
    Rare Books and Old Materials xlsx format: 4.4MB
    tsv format (zip): 1.4MB
    approx. 79,000 items
    xlsx format: 925KB
    tsv format (zip): 218KB
    approx. 18,000 items
    xlsx format: 5KB
    tsv format (zip): 0.6KB
    4 items
    Serials xlsx format: 12KB
    tsv format (zip): 4KB
    70 items
    xlsx format: 937KB
    tsv format (zip): 454KB
    approx. 11,000 items
    xlsx format: 229KB
    tsv format (zip): 106KB
    approx. 3,000 items
    Doctoral Dissertations xlsx format: 1.2MB
    tsv format (zip): 835KB
    approx. 15,000 items
    xlsx format: 10.2MB
    tsv format (zip): 6.7MB
    approx. 117,000 items
    xlsx format: 795KB
    tsv format (zip): 505KB
    approx. 9,000 items
    Historical Recordings Collection 4 xlsx format: 145KB
    tsv format (zip): 54KB
    approx. 2,000 items

    Notes:

    1. Datasets that are available online include the bibliographic data of digital images in the NDL Digital Collections (1) which are in the public domain due to copyright expiration, (2) for which permission was granted by the copyright holder, or (3) for which permission was granted by the Commissioner of the Agency for Cultural Affairs.
    2. Datasets of books, rare books and old materials, serials and doctoral dissertations that are available at both the NDL and its partner libraries are bibliographic data of digital images which are not available online and for which the original source is out-of-print or otherwise difficult to obtain. The images may be viewed on the premises at either the NDL or one of its partner academic or public libraries.
    3. Dataset that are available only at the NDL are bibliographic data of digital images available only on the premises at the NDL.
    4. The datasets of Historical Recordings Collection's bibliographic data which are available only at the NDL and partner libraries and those that are available only at the NDL are the same. It contains bibliographic data of recordings, whose right of public transmission has not been cleared. These recordings are available only at the NDL and the Historical Recordings Collection partner libraries.

To the head of this page

Bibliographic Data of Japanese Publications (Most Recent Year)

The National Diet Library (NDL) provides basic metadata dataset of the publications published in Japan. That dataset includes basic bibliographic data (material type, National Bibliography Number, ISBN or ISSN, title, creator, edition, series title, publication information, extent (page number, size)) and NDL-OPAC URL.

  • This bibliographic data is metadata about Japanese publications; domestic publications and foreign publications in Japanese. The bibliographic data cataloged by the NDL in the year (from January to December) is included.
  • The information of the bibliographic items is subject to change. There are some cases in which the URL does not navigate to the page of the NDL-OPAC.
  • In the Material Type (FMT), there are six types: Books (BK), Computer files (CF), Maps (MP), Music (MU), Serials (SE), Visual materials (VM).
  • There are no restrictions on the use of the metadata dataset. NDL assumes no responsibility or liability for any actions taken as a result of using the dataset.

To the head of this page

Bibliographic ID List

The National Diet Library (NDL) provides the bibliographic data through online services such as the NDL-OPAC, the NDL Search, the NDL Digital Collections. They include different bibliographic items and different target materials. For more efficient use of the bibliographic data, the NDL provides the list of identifiers (IDs) which could integrate individual bibliographic data.

  • (1)The list includes the following IDs:
    • NDL Bibliographic ID (NDLBibID)
    • National Bibliography Number (JPNO)
    • International Standard Book Number (ISBN)
    • Permanent identifier added by the NDL (NDLJP) (PID)
    For further details, please see the About Bibliographic ID List (txt: 6KB) (Japanese).
  • (2)The list was made from bibliographic data, dated May 9, 2017. The data are subject to change. For the latest data, please see the NDL Search or the NDL Digital Collections. Furthermore, NDL Search and the NDL Digital Collections support only a limited number of concurrent requests to prevent server overload. Access might not be available when web traffic is heavy.
  • (3)There are no restrictions on the use of the list. NDL assumes no responsibility or liability for any actions taken as a result of using the list.

To the head of this page

Beta version of International Standard Identifier for Libraries and Related Organizations (ISIL) LOD

The ISIL (International Standard Identifier for Libraries and Related Organizations) is an identifier which can be allocated to libraries and relevant organizations, such as archives and museums. The NDL operates the National Agency for ISIL in Japan and provides ISIL LOD as part of its initiatives to promote LOD. Please contact us if you have any inquiries or opinions.
This ISIL LOD is version 1.2 Beta.
There are no restrictions on use of these public domain datasets.

To the head of this page

Contact for inquiries about Free Data Service

Standardization Section, Digital Information Distribution Division,
Digital Information Department, National Diet Library
E-mail: standardizationat n d l dot g o dot j p

To the head of this page