Privacy

Short version: your tool data never leaves this device.

Toolbelt is a static website. After the app and its assets load from this origin, tools run entirely in your browser. There is no application server processing your input, no database, and no analytics.

You can verify this in DevTools → Network: after the first load you should see no third-party requests. A service worker caches same-origin pages and assets (including hashed /_next/static/ files) so the app can reload offline after that first visit.

No accounts or sign-in
No cookies for tracking (only optional local preferences)
No third-party scripts or font CDNs
No beacons, tag managers, or telemetry
Optional localStorage for theme, favorites, recents, and non-sensitive tool options
Share links encode tool options only — never your input by default
PDF tools process files entirely in your browser (pdf-lib / pdf.js); nothing is uploaded

Fonts are self-hosted. Hashing uses Web Crypto (and a local MD5 implementation when needed). File tools read via the File API and Canvas — nothing is uploaded.

Back to tools