An overview of building cards to customize the HubSpot UI.
Last modified: August 22, 2025
Add a layer of UI customization to your app by including app cards that can display data, allow users to perform actions, and more. You can build app cards that display on CRM records, preview panels, the help desk workspace, and the sales workspace.Once the app is installed in an account, Super Admins and users with Customize record page layout permissions can add any included app cards to their configured locations in HubSpot.To get started building app cards:
Follow the quickstart guide to start with a new app, or check out the app creation guide to customize the features and configuration of a new app.
Migrate an existing legacy private or public app to the developer platform.
Learn how to add an app card to an existing developer platform app.