Privacy Policy
Last updated: 2026. This page explains what happens to your data when you use Developer Tool.
Your files and data stay on your device
Every tool on this site (JSON/XML/SQL formatting, encryption, the Document Converter, Image Compressor, Image Format Converter, and all others) runs entirely in your browser using JavaScript. Files you upload or text you paste are processed locally on your device and are never sent to, or stored on, any server we operate.
Cookies and local storage
Developer Tool itself does not use cookies or browser local storage to track you or store your data. Preferences like dark mode are kept only in memory for your current visit.
Advertising (Google AdSense)
This site may display ads served by Google AdSense. Google and its advertising partners may use cookies and similar technologies to serve ads based on your prior visits to this or other websites. You can learn more about how Google uses information from sites that use its services, and adjust your ad personalization settings, at policies.google.com/technologies/partner-sites and adssettings.google.com.
Contact
Questions about this policy or the site can be sent using the feedback button in the bottom-right corner of the page, or by email at maiphuoc244@gmail.com.