How Privatools Guarantees Zero Knowledge
Unlike traditional utility websites that upload your spreadsheets, images, and API keys to remote cloud servers, Privatools operates exclusively inside your browser.
Client-Side Computation Engine
All algorithms—whether parsing a 20MB CSV, converting an image to WebP, or decoding an X.509 certificate—execute directly via the browser’s V8 JavaScript engine, HTML5 Canvas API, Web Crypto, and WebAssembly (SQLite) runtime.
Works Completely Offline
Once the static assets load, you can turn on Airplane mode or disable your network connection entirely. Every converter and inspector will continue to function at full speed with zero degradation.
Zero Tracking & Zero Cookies
No Google Analytics, no Facebook pixels, no telemetry beacons, and no tracking cookies. What you convert remains strictly between you and your computer hardware.
Enterprise Compliance Friendly
Because sensitive company spreadsheets, patient records (HIPAA), or customer identifiers (GDPR) never cross the network perimeter, you avoid data residency violations and third-party data processor risks.
Verify for Yourself in 3 Steps
- Open Browser DevTools: Press F12 or Cmd + Option + I and click on the Network tab.
- Convert or Upload a File: Drop any large JSON, CSV, or Image into the converter and click Convert or Download.
- Inspect the Network Tab: Observe that exactly 0 data upload requests are made. No background `fetch`, `XMLHttpRequest`, or `WebSocket` messages transmit your file or string data. (Optional offline PWA license activation contacts Gumroad solely to verify your license key).
Audit the Source Code on GitHub
Privatools is completely transparent. You can clone the repository, inspect the WebAssembly & Canvas conversion algorithms, or build and run the static export locally on your own machine.