Your data stays in your browser
Every tool on jsonsql.dev processes data entirely in your browser using JavaScript. Nothing is sent to any server — ever. There is no backend, no API calls, no data collection. You can verify this by inspecting the Network tab in your browser's developer tools.
No cookies, no tracking
jsonsql.dev does not use cookies. The only browser storage used is localStorage to remember your theme preference (light or dark mode). No analytics scripts, no tracking pixels, no fingerprinting.
No accounts
There are no accounts, no sign-ups, no email collection. You open a tool and use it — that's it.
Hosting
jsonsql.dev is hosted on Cloudflare Pages as static files. Cloudflare may collect standard web server logs (IP address, user agent) as part of their infrastructure. jsonsql.dev itself does not access or store any of this data. See Cloudflare's privacy policy for details.
Changes
If this policy changes, the update will be reflected on this page with a new date.
Last updated: April 12, 2026