Privacy
Short, because there is little to tell
No accounts
This site has no sign-up, no login and no user database. There is nothing to create, so there is nothing of yours for this site to hold.
What this site collects
Anonymous page-view analytics (Vercel Web Analytics), sent to this site's own origin — enough to see which pages are visited, not who visited them. The only thing stored in your browser by this site is your light/dark theme choice, in localStorage, and only if you set one.
What happens when you launch the workspace
The CAD application is the upstream OpenCADStudio browser build, loaded into the page from its published location (currently GitHub Pages). Loading it means your browser requests those files from that host, with the standard request metadata any web request carries. The application then runs in your browser tab; drawings you open are opened through your browser's file dialogs and processed by the application on your machine. For the application's own behaviour, its public source code is the authoritative reference.
Hosting
The site is served by Vercel, which, like any host, processes request logs (including IP addresses) to deliver the pages. This site adds no advertising, no third-party trackers and no cross-site requests of its own — its content security policy permits the page to talk only to this origin, plus the single frame that hosts the CAD build.