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    Custom card

    A card that is not part of the frontend, loaded by the user from a JavaScript file.

    In code
    custom:window.customCards
    Also
    custom cards

    Custom cards are web components, used with the custom: prefix in a card's type. They can use everything the frontend passes to a card, like the hass object.

    Related terms

    • CardA block on a dashboard that shows or controls something, like an entity, a graph, or a weather forecast.
    • Custom integrationAn integration that is not part of Home Assistant Core, installed by the user in the `custom_components` folder.