Site Policy of the Research Navi

1. Matters to be noted when utilizing the Research Navi.

Pay attention to the following when utilizing the Research Navi (provided under the domain "" unless specifically noted)

1-1. Concerning Links

Basically, you can freely link the Research Navi.

When attempting to link a particular page, be sure to make it clear that the page in question is contained in the Research Navi.

You can access the site by using the banner shown below or the banner of each service in the Research Navi.

1-2. Copyright Policy

All individual information on the Research Navi is subject to copyright. Moreover, the entire the Research Navi is subject to copyright protection as a compilation, and is protected by the Japanese Copyright Act and international treaties.

Upon using the contents of this website, please comply with the terms of use of the Research Navi and National Diet Library's website.

1-3. Utilizing the contents of the Research Navi

Please refer to "Terms of Use of the Research Navi" and "Utilizing the contents of the National Diet Library".

1-4. Web Accessibility

Please refer to "Web Accessibility".

1-5. Disclaimer

The National Diet Library (NDL) prepares the content of the Research Navi (provided under the domain "") with due care, but disclaims all responsibility for any acts done by using the information or resources on our websites.

The NDL does not endorse or merchandise the information or resources introduced on our websites. Furthermore, the NDL bears no responsibility for the accuracy, legality or safety of the external websites and their content.

Please note that the content and URLs of our websites may be changed without notice, and the NDL may take down the websites in case of system maintenance, etc.

1-6. Privacy Policy

Please refer to "Privacy Policy of the Research Navi".

1-7. Using the Research Navi

OS and browsers

We recommend you use the following OS and browsers.

  • OS
    Windows 10
  • Browsers
    Mozilla Firefox latest version / Google Chrome latest version
  • Digital exhibition "NDL Imagebank" is not available with Internet Explorer.


Some of parts of the Research Navi utilize JavaScript and might not function as intended on browsers that do not have JavaScript enabled.


Adobe Reader is recommended for viewing PDF files.


Please refer to "Privacy Policy of the Research Navi".


The Research Navi utilizes Transport Layer Security (TLS) 1.2 to enhance its security. Older browsers not compatible with TLS 1.2 will be unable to access this website.

2. Social media moderation policy of the National Diet Library

Please refer to "Social media moderation policy of the National Diet Library".