Keeping you signed in — your sign-in session from Amazon Cognito, until you sign out, and a short-lived state while a Google sign-in completes.

Saved accounts — if you add more than one account to this browser (up to five): each account’s own session, and a list of the saved accounts (name, email address and when it was last used — never a password) so you can switch between them. Everything else in this list is kept separately for each account. A school login is forgotten when the browser is closed, unless you chose “Remember on this computer”.

Working without a connection — changes not yet sent to the server, and a copy of your trees and their open/closed state so pages load at once and nothing is lost when the connection drops.

Remembering your choices on this device — colour theme, menu layout, tree size, panel sizes, the equipment view, the workspace and organization you last used, the label size and label printer you picked, and whether help dots are shown.

Accepting an invitation — kept in session storage only while the tab is open.

Notifications — only if you turn on browser notifications: a service worker and a push subscription so notifications can reach you, which of your workspaces you turned them on for, and the names of the saved accounts with a count of new notifications for each, so a notification can say which account it is for.