Privacy Policy
Last updated: June 2026
Data processing
All JSON formatting, validation, and minification is performed entirely in your browser using native JavaScript (JSON.parse and JSON.stringify). Nothing you type or paste is transmitted to any server. Your JSON never leaves your device.
Cookies and advertising
formatjson.app uses Google AdSense to display advertisements. Google may use cookies to serve ads based on your prior visits to this website or other websites. You can opt out of personalized advertising by visiting Google Ads Settings.
Analytics
We may use anonymous analytics to understand general usage patterns (page views, browser types). No personally identifiable information is collected.
Local storage
Your dark mode preference is stored in your browser's localStorage under the key formatjson-theme. This data never leaves your device.
Contact
If you have questions about this privacy policy, please use the Contact link in the footer.