Privacy & local storage
This notice describes the current free beta. Account, payment and advertising features are not active.
Your designs stay in your browser
The editor saves your layout and a previous-layout backup in this website's local browser storage. The editor does not upload your layout to a server. Imported files are read in your browser; exports download a JSON file to your device. Input-test events remain in memory during the session.
Keep a backup
Storage is specific to the browser, device and website address. Clearing site data can remove saved layouts. Export your layout before changing devices, clearing browser data or moving from localhost to this website. You can remove stored layouts by clearing this site's data in your browser settings.
Website delivery
Cloudflare hosts and delivers this website. Visiting it sends ordinary connection information, such as your IP address and browser request details, to Cloudflare. See Cloudflare's privacy policy for its handling of that information.
Accounts, payments and ads
This beta does not collect account details or payments and does not load advertising or analytics scripts. Google sign-in, paid offers and advertising are planned. This notice and any required consent choices will be updated before those features are enabled.
Beta limitations
Thumbprint is a layout design and input-preview tool. It does not yet provide a complete rhythm game or ready-to-use game-engine integration. Export backups of important work while the beta develops.