Privacy Policy
Last updated: April 2026
1. Overview
DevToolBox ("we", "our", "us") operates zhujiuyin.com. This page explains what information we collect, how we use it, and the choices you have. By using the site you agree to this policy.
2. Data you provide to the tools
Every tool on this site runs entirely in your browser. Text you paste into the JSON formatter, Base64 encoder, URL encoder, regex tester, or timestamp converter is processed locally. We do not upload, log, or store your tool input on any server.
3. Cookies and local storage
We use cookies and browser local storage to remember your UI preferences (language, theme). These do not personally identify you.
4. Analytics
We may use privacy-respecting analytics (such as Google Analytics) to understand aggregate traffic patterns. Analytics cookies collect anonymous data such as page visited, referrer, device type, and approximate region.
5. Advertising and Google AdSense
This site is served with advertising from Google AdSense. Google and its partners may use cookies (including the DoubleClick cookie) to serve ads based on your prior visits to this site and other sites on the internet. You can opt out of personalized advertising at https://www.google.com/settings/ads. For more on how Google uses advertising data, see https://policies.google.com/technologies/ads.
6. Third-party services
Our pages may load resources from Google (AdSense, Fonts, Analytics) and our CDN provider Cloudflare. These providers process standard request metadata such as IP address and user-agent to deliver the service.
7. Children's privacy
DevToolBox is not directed to children under 13. We do not knowingly collect personal information from children.
8. Changes
We may update this policy from time to time. Material changes will be reflected by updating the "Last updated" date at the top of this page.
9. Contact
Questions about this policy? Reach us at contact@zhujiuyin.com.