DimTag: Real dimensions for Blender, ready for GLB

Real dimension lines and room areas that survive GLB export.

Select a floor or an object and click once: DimTag adds clean dimension lines, room areas and L/W/H measurements as real geometry that renders and exports to glTF/GLB.

Main features

1. Floor mode: plans in one click

• Select floor faces (Edit Mode) or floor objects (Object Mode), then click Dimension Floor
• Finds the room outline automatically and merges segments that lie on the same line
• Auto mode: rectangular rooms get length and width, L-shaped and irregular rooms get every wall
• Room area (m² or ft²) and room name placed at the center
• Several rooms at once: split by connected faces, by material, or one room per face
• Works on triangulated or subdivided floors and on rotated objects

2. Volume mode: L / W / H for any object

• Select a car, a piece of furniture or a product, then click Dimension Volume
• Length, width and height drawn around the bounding box
• The box follows the object's rotation, and child parts are included
• One box around the whole selection, or one per object
• Auto Size keeps it readable from a 10 cm mug to a 5 m car

3. Built for export

• Real mesh geometry, not a viewport overlay, so it renders in Cycles and Eevee
• One-click Export GLB with the model and its dimensions together
• Lightweight geometry, ready for Three.js, <model-viewer>, configurators and AR

4. Non-destructive

• Everything goes in a "DimTag" collection
• Update rebuilds the dimensions after you edit the model or change the style
• Clear removes them in one click

Style options: units (scene, m, cm, mm, ft-in), number of decimals, arrows, architectural ticks or no ends, offset, text size, line width, and line and text colors.

Compatibility: Blender 4.2 or newer (tested on 5.0), Windows, macOS and Linux. GPL license.

Use cases: arch viz, real estate floor plans, furniture and product catalogs, e-commerce 3D viewers, product configurators.