Looker’s LookML Diagram extension provides an entity-relationship-diagram for the objects within your LookML model. With the LookML Diagram developers can:

• Visualize relationships between LookML objects within an explore
• Drill into metadata for explores, fields, and joins
• Simplify the diagram with the option to hide hidden fields or only show fields in joins
• Refresh the diagram to see the latest LookML

Learn more about using and interpreting the LookML Diagram, here.

This application requires the “Extension Framework” labs feature be turned on, which can be found in your Admin console. You’ll also want to make sure your users have the appropriate permissions (access_data, develop, see_lookml, see_looks, deploy, explore) to see and use the LookML Diagram. Once installed, the LookML Diagram will be accessible via the “Browse” dropdown on the navigation bar on the top of your screen.