1. Introduction
utsushi (hereinafter "this tool") is a tool for comparing text differences in your browser. This privacy policy explains how information is handled in this tool.
2. Handling of Text Data
Text data entered into this tool is
processed entirely locally within your browser.
- ✅ Input content is not sent to any server
- ✅ Input content is not saved or recorded
- ✅ Input data is deleted when you close the page
3. About Analytics
This tool may use the following analytics tools for service improvement.
- Google Analytics: Collects statistical information such as visitor count, page views, and device usage
- Microsoft Clarity: Collects anonymized user interaction patterns (clicks, scrolls, etc.)
These tools may use cookies, but
the content of your text input is never collected.
⚠️ About Microsoft Clarity Session Recording
Microsoft Clarity has a feature that records user interactions. While we have configured input areas to be masked, we cannot guarantee complete exclusion due to technical limitations.
If you handle sensitive text, consider blocking third-party cookies in your browser settings or enabling Do Not Track (DNT).
4. About Cookies
This tool uses cookies or local storage for the following purposes.
- Saving theme settings (dark/light mode)
- Saving language settings
- Analytics (see above)
5. Third-Party Disclosure
Since this tool does not collect input data, no disclosure to third parties is made. Statistical information collected through analytics is handled according to each analytics service's privacy policy.
6. Contact
For inquiries about this privacy policy, please use the Issues section of the GitHub repository.
7. Amendments
This privacy policy may be amended as necessary. Significant changes will be announced on this tool.
Last updated: January 22, 2026