Privacy Policy
Last updated: July 20, 2026
YOSHINYA ("we") provides free browser-based tools at yoshinya.com. This policy explains what information is — and is not — handled when you use the site.
Your files stay in your browser
Tools on this site, including File Renamer, process the files you select entirely within your browser. Your files, file names, and their contents are not uploaded to or stored on our servers. Downloads (such as the generated zip) are created locally on your device.
Cookies
The site uses a single cookie ("yoshinya_locale") to remember the language you chose. It contains only "ja" or "en" and is not used for tracking or advertising.
Server logs
The site is delivered through Cloudflare. Like most web infrastructure, Cloudflare may process basic technical request data (such as IP address and browser information) to serve and protect the site. We do not use this data to identify you.
Analytics
No analytics or advertising services are currently active on this site. If we introduce analytics in the future, this policy will be updated before it is enabled, and it will never collect the names or contents of your local files.
Contact
For questions about this policy, contact us via X (Twitter): @yoshinya_com.
Changes to this policy
We may update this policy as the service evolves. The date above shows the latest revision. Continued use of the site after an update constitutes acceptance of the revised policy.