Privacy, disclaimer and licenses

Google Analytics / external transmission

Koyu uses Google Analytics to understand visits, page use, and general technical performance. The following information is disclosed for transparency about transmission from your browser.

Recipient

Google LLC

Information sent

Page URL and title, referrer, interactions and timestamps, browser and device information, IP address used to derive an approximate location, and identifiers stored in first-party _ga cookies

Purpose

To measure visits and page use, understand general technical performance, and improve Koyu. Google processes the information to provide and maintain Google Analytics.

We do not intentionally send names, email addresses, or form contents to Google Analytics. Advertising storage, advertising user data, personalized advertising, and Google Signals are disabled in the site configuration.

Your choice

Google Analytics does not load for any visitor until analytics has been explicitly allowed. You may decline when the preference panel first appears.

Declining disables collection and removes accessible Google Analytics cookies from this site. The choice is remembered so the panel does not appear on every visit, and it can be changed below at any time.

Functional storage

Koyu stores the selected interface language so the choice persists across visits. It also stores the analytics preference and the date it was changed. These preferences are used only to provide the requested site behavior.

Google and further information

Google describes how it processes information from sites using its services in Google’s Business Data Responsibility information. Analytics retention and deletion also follow the settings of the Koyu Google Analytics property.

Questions about this site can be raised through GitHub Discussions.

Disclaimer

Koyu is an experimental project developed and published by an individual as a hobby. No result is guaranteed, including the accuracy, completeness, usefulness, or fitness for a particular purpose of this site, its software and documentation, or any drawings, values, checks, and other outputs produced with Koyu.

It is not a substitute for professional judgment or verification of an actual design, construction work, or regulatory compliance. Verify and use all content at your own risk. To the extent permitted by law, the author is not liable for damage arising from its use.

Licenses and attribution

Copyright 2026 koyu by kensnzk.

Code (src/, test/, examples/, …) is available under the Apache License 2.0. Documents (docs/, spec/, and the essay “建築を書く / Writing Architecture”) are available under CC BY 4.0. Citation metadata is provided in CITATION.cff.