ModelUSD
Resize, repair and export 3D
Only for Mac
Free
Mac
Open a 3D model, correct its real-world size and orientation, recover textures, reduce heavy geometry, and export a clean, compact USDZ—all on your Mac.
Prepare downloaded 3D models without opening a complicated modeling application.
ModelUSD is a focused, native Mac utility for opening, inspecting, resizing, repairing, simplifying, and exporting 3D models as portable USDZ files.
WORK IN REAL-WORLD DIMENSIONS
See width, height, and depth in feet and inches, inches, centimeters, millimeters, or meters. Change any one dimension and the full model scales proportionally.
FIX ORIENTATION AND PLACEMENT
Turn or flip a model along any axis, recenter its origin, and place it directly on the floor. An infinite-feel grid and optional XYZ guides keep the model understandable in 3D space.
RECOVER AND REPLACE TEXTURES
ModelUSD looks for texture images stored beside imported models. If a texture is missing, attach base color, normal, roughness, or ambient-occlusion images manually and include those replacements in the final export.
REMOVE UNWANTED OBJECTS
Inspect named objects inside multi-part files and exclude the pieces you do not need. Your original file remains unchanged.
REDUCE HEAVY GEOMETRY
Preview geometry reduction before export, compare triangle counts, and choose Original, Balanced, Lightweight, or a custom retained percentage. Texture coordinates and material sections are protected while unused vertices are removed.
INSPECT THE MODEL CLEARLY
Switch between textured, shaded, wireframe, and X-ray views. Review object, mesh, vertex, triangle, material, texture, camera, light, and animation details.
CHECK REAL-WORLD SCALE
Place an optional six-foot Figure beside the model to judge furniture, props, scenery, and architecture at a glance. The Figure and all viewport guides never export with your model.
IMPORT COMMON 3D FORMATS
Open USDZ, USD, USDA, USDC, FBX, GLB, glTF, OBJ, STL, PLY, Alembic, DAE, 3DS, 3MF, IFC, DXF, LWO, STEP, X3D, and many additional formats. Expanded formats are converted into a local working copy; the original stays untouched.
EXPORT COMPACT USDZ
Choose Original, Balanced, or Smallest texture settings and package your corrected scale, orientation, selected objects, replacement surfaces, and textures into one USDZ file.
BUILT FOR PRIVACY
ModelUSD works locally on your Mac. It has no account, analytics, tracking, or file uploads.
Open. Size. Export.
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The developer, Brandon Davis, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
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Information
- Seller
- Brandon Davis
- Size
- 25.2 MB
- Category
- Graphics & Design
- Compatibility
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
- Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Brandon PT Davis