No backend servers. No data collection.
Sign contracts securely.
Keep your privacy absolute.
Unlike traditional e-signature platforms, CleanSign renders and executes documents entirely within your browser's memory. We never see, upload, or store your sensitive files.
100% Client-Side
Processing happens purely in your device's RAM. If you turn off your Wi-Fi right now, the app still works.
Cryptographically Sealed
Every document exports with an automated, tamper-evident SHA-256 audit certificate appended to the final page.
Legally Binding
Complies with the UK Electronic Communications Act 2000, US ESIGN Act, and EU eIDAS regulations.