Data Viewer - Attribute Visualizer For Blender Geometry Node is a node group that shows geometry attributes in the 3D view, letting you read values without switching to the spreadsheet editor. It can be useful for debugging and troubleshooting, as well as for understanding the structure and relationships of 3D models. You can preview the ID or index of a vertex, edge, or face directly in the view, and view other attributes such as position, rotation, and radius depending on your input.
The tool offers custom parameters including field type, number color and size, flat or vertical orientation, decimal places, alignment, and axial arrows. A gradient color option marks value size, with blue for the minimum and red for the maximum. You can display axes instead of numbers, where r, g, b correspond to x, y, z and darker colors indicate negative values. A speed-up option helps preview large amounts of data more smoothly, and a domain value (range -2 to 5) sets which domain to view.
Data Viewer comes in Lite, Standard, and Professional versions, with a comparison table on the developer's page. It requires Blender 4.0 or later.