What stays in your browser
The worksheet is a static client-side feature. It does not have a server, account system, analytics, or form submission endpoint.
Local storage
When you save a worksheet, the browser stores metadata in localStorage on the current device and origin. The site does not transmit it. Browser storage is not a vault: use a private device and delete records when finished.
Exports
The export button creates a local JSON file. It is your responsibility to protect or delete that file. It contains metadata, but metadata can still reveal business relationships.
Support page and third parties
The Support page loads external payment, sponsorship, newsletter, and donation services when opened. Those providers may receive information according to their own policies. The project does not handle payment details. Review each provider’s terms before using it.
Service worker
The service worker caches static assets only. It does not cache worksheet state and does not intercept or send form submissions.
Do not enter
- Passwords or passphrases
- API keys, access tokens, or private keys
- Payment credentials
- Customer, health, legal, or regulated data