Version: 2020.3
Terrain Tools
Unity NetCode

UI Builder



The UI Builder lets you visually create and edit UI assets such as UI documents (.uxml files), and stylesheets (.uss files), that you use with Unity’s UI Toolkit (formerly UIElements).

To open the UI Builder window, select Window > UI Toolkit > UI Builder from the menu.

Note: In Unity 2019.x, you open the UI Builder from the Window > UI > UI Builder menu.

Note: UI Builder is the visual authoring tool for UI Toolkit. It does not include runtime support. To enable runtime support in Unity 2020.1 and later, install the UI Toolkit package. For details, please see the UI Builder package documentation.

Version information

Experimental or in preview for Unity

These package versions might not be safe to use in production with Unity version 2020.3:

Documentation location: State Versions available:
com.unity.ui.builder@1.0 preview 1.0.0-preview.1, 1.0.0-preview.2, 1.0.0-preview.3, 1.0.0-preview.4, 1.0.0-preview.5, 1.0.0-preview.6, 1.0.0-preview.7, 1.0.0-preview.9, 1.0.0-preview.10, 1.0.0-preview.11, 1.0.0-preview.12, 1.0.0-preview.13, 1.0.0-preview.14, 1.0.0-preview.15, 1.0.0-preview.16, 1.0.0-preview.17, 1.0.0-preview.18
com.unity.ui.builder@0.11 preview 0.11.0-preview, 0.11.1-preview, 0.11.2-preview
com.unity.ui.builder@0.10 preview 0.10.0-preview, 0.10.1-preview, 0.10.2-preview
com.unity.ui.builder@0.9 preview 0.9.0-preview
com.unity.ui.builder@0.8 preview 0.8.0-preview, 0.8.1-preview, 0.8.2-preview, 0.8.3-preview, 0.8.4-preview
com.unity.ui.builder@0.7 preview 0.7.0-preview
com.unity.ui.builder@0.6 preview 0.6.1-preview, 0.6.2-preview
com.unity.ui.builder@0.5 preview 0.5.7-preview, 0.5.8-preview
Terrain Tools
Unity NetCode