Tiny Online Tools
Make AR-ready USDZ files without a Mac
Apple's Quick Look is the easiest way to put a 3D model into someone's hands: tap a link on an iPhone and the object appears on the table in front of you. The catch is the format. Quick Look wants USDZ, and Apple's own conversion tools ship with Xcode — macOS only. This free online USDZ converter does the job in any browser, on any operating system, without uploading your model.
The conversions people actually need
- GLB to USDZ — take the web-standard format you already have and publish it to iOS AR
- GLTF to USDZ — same, straight from a glTF export
- USDZ to GLB — bring an Apple-format asset back into a web viewer, a game engine or Blender
- OBJ to USDZ and STL to USDZ — get legacy and print assets into AR
- USD, USDA and USDC — read the plain-text and binary crate variants too
Getting AR scale right
The single most common AR mistake is scale. USD works in metres. A model authored in millimetres — which is most CAD output — arrives in Quick Look a thousand times too big and fills the room.
This converter fixes it in two steps. Pick the unit your model was authored in, and the tool converts to metres for you. Then check the physical size readout, which shows the exact bounding box in both metres and inches after scaling. If your chair says 0.9 × 1.1 × 0.9 m, it will place correctly. If it says 900 × 1100 × 900 m, change the unit and try again.
Anchoring
USDZ can tell Quick Look how the object wants to be placed. A sofa should sit on the floor; a picture frame should hang on a wall. Choose horizontal plane for furniture and props, vertical plane for wall-mounted objects, or leave it unset to let the viewer decide.
Texture size matters more than triangle count
USDZ embeds its textures, so a model with four 4K maps becomes a 40 MB download that stalls on mobile data. The texture-size control resamples every map on the way out. For most Quick Look assets, 1024 px is the sweet spot; 2048 px is worth it only for objects the user will inspect closely.
How to use it
- Add your model — GLB, GLTF, OBJ, STL, FBX, DAE, or an existing USD file.
- The output format is preselected based on what you dropped in; change it if you need something else.
- Set the unit your model was authored in, and a multiplier if you also want to resize it.
- For USDZ output, choose a texture size and an anchoring mode.
- Convert, check the physical size, and download.
Limitations worth knowing
USD is a much larger specification than any converter implements in full. Variants, layer composition, references and shading networks beyond UsdPreviewSurface are not read. Geometry, transforms, PBR materials and textures come through reliably — which covers essentially everything Quick Look actually renders.
Privacy
The conversion happens in your browser using WebAssembly. Your product renders, client models and unreleased designs are never uploaded, stored or logged.