Kiosk mode / Append ?kiosk

When Append ?kiosk (HACS Kiosk Mode) is enabled in the app (Admin → Dashboards), the dashboard URL has ?kiosk added so the frontend can hide headers and navigation for a clean kiosk display. Requires a kiosk-mode solution (e.g. HACS Kiosk Mode or kiosk-mode Lovelace frontend) on your dashboard.