USDZ file: AR Quick Look on iPhone and iPad

What a USDZ file holds

The file holds the geometry, materials, textures and the units the model was built in, so AR Quick Look can show a piece at its modelled size. The geometry is a mesh rather than the exact curves of a 3DM file, so a USDZ is for showing a piece, not for making it.

USDZ and GLB

A GLB does the same job in web viewers and on Android, so a product page with AR on both platforms serves both files. In Safari, a link with rel="ar" around a single image opens the USDZ in AR Quick Look:

<a rel="ar" href="/models/solitaire.usdz">
  <img src="/images/solitaire.jpg" alt="Yellow gold solitaire ring">
</a>

The 3D format comparison covers STL, OBJ and the rest.

USDZ in the studio

In the studio, Export → 3D → USDZ downloads the design for an iPhone or iPad. The export is scaled so its longest side is 3 cm, a size that reads right for a ring or a pendant, rather than the piece's own measured size. 3D model export comes with the Growth plan and above. The export guide covers the other exports.

AR Quick Look sets a piece on a surface such as a table. For a ring on the hand, virtual ring try-on follows the finger through the camera.