Card settings

Open any card's popup and choose ⋯ → Card settings. Changes apply right away and are listed under Settings → Card settings, where you can reset them.

Per card

setting	what it does
Name and icon	your own name and Material Design icon (mdi:…)
Tap and hold	toggle, details (the panel's popup), Home Assistant (Home Assistant's own dialog) or nothing
Bottom line	the extra row at the bottom; options depend on the card (brightness steps, colours, today, sparkline, timer, cost …)
Hide parts	hide the name, the line under it or the state
Hide card	take the card off its page
Actions	up to three of your own buttons on light, switch, sensor, fan and lock cards: a label, an icon, a service (light.turn_on) and JSON data
Template overrides	replace the state, the line under the name or the bottom line with a Jinja template
Power sensor	link a power sensor to a switch by hand (it then becomes a plug card)
Appliance features	for plugs with a power meter: show busy / done, and the threshold in watts

Card defaults

Settings → Card defaults sets the same tap, hold and bottom-line options for a whole card type at once. A setting on a single card wins over the default.

Buttons

A small design rule runs through the panel: round buttons pick a value (a mode, a brightness step, a colour), square buttons do something (play, stop, up, down).