Your setup stays yours.
The calculators run in your browser. You do not upload a world, sign in to a Minecraft account or provide a world seed. Item choices and book lists are not sent to a calculation server.
Shareable links
Your selected configuration is written into the page URL. Anyone you share that URL with can see the configuration. Avoid putting private information into a URL. Copying a link or plan uses your browser’s clipboard only after you press the corresponding button.
Hosting and third-party resources
The hosting provider may process ordinary access logs such as your IP address and requested URL. Fonts are requested from Google Fonts. The private preview may require the hosting platform’s sign-in and is subject to that platform’s privacy policy.
Analytics and storage
This version does not include advertising, third-party analytics, tracking cookies or a user database. Configuration stays in the URL and calculation caches stay in temporary browser memory. Closing the page clears those in-memory caches.