Why this page exists
lans.cloud has no accounts and no cloud storage — by design. When you save a spinning wheel, a class list, a scoreboard roster, or a classroom screen board, it is written to your browser's local storage and never leaves your device. That is the privacy model: there is nothing to breach on our side, nothing to subpoena, and nothing to forget to delete when you stop using the site. This page is the proof — every byte the tools have stored is listed, downloadable, and deletable right here, with no login and no support ticket.
Moving to another device
The one honest downside of browser-only storage is that it stays in that browser. The classic teacher case: you build tomorrow's classroom screen board at home, and the smartboard PC at school knows nothing about it. The fix takes a minute — export here at home, and the file downloads instantly since it is built on your device, not fetched from a server. Then import it on the school machine. The same trick works for moving between browsers on one computer, before wiping a machine, or when your school refreshes its hardware over the summer.
What the file contains — and what it can't
The export is one plain JSON file containing your saved tool settings and your theme choice, exactly as the tools stored them. There is no account ID, no email address, no analytics or tracking identifiers in it — those never existed in the first place, so they cannot be in the file. You can open it in any text editor and read everything.
Imports are checked twice. This page verifies the file is a genuine lans.cloud export and ignores anything that does not belong. Then, independently, every tool sanitizes its own data each time it loads — unknown fields are dropped and missing ones get sensible defaults. So an old export from months ago, or a file you hand-edited, imports safely: the worst case is that a tool falls back to its defaults.