Quick3D scene MIME Type
MIME type details for model/x-q3s
In active use| MIME type | model/x-q3s |
|---|---|
| Extensions | .q3s |
| First standardized | Unknown; documented format version 3.0 |
| Created by | Quick3D |
| Browser support | Requires a compatible viewer |
| Example applications | Quick3D (legacy application) |
| Poly support | Partial. 3D features apply to supported Quick3D scene content, not every file sharing the suffix. |
| Indexed by Poly | Yes. Filename search, plus visual similarity when supported geometry is processed. |
| Preview in Poly | Partial. Interactive preview when a supported model with visible geometry is available. |
| Poly agent | Partial. An optimized rendition of the 3D object or scene is provided to the agent, allowing compact yet information-rich multimodal interaction with 3D files. An available visual rendition is required. |
What does model/x-q3s identify?
model/x-q3s is Poly's identifier for Quick3D scene files with the .q3s suffix. The corresponding object-file identifier is model/x-q3o. This is a Poly-recognized identifier, not a claim of IANA registration.
A .q3s file is a Quick3D scene. It is related to the Q3O object format, but has a scene record and the signature quick3Ds.1
The distinction matters when recovering an old collection: an object and a scene are not interchangeable just because their filenames share a prefix. Keep the original scene even if you also export its meshes separately.
Opening the file
Use the originating Quick3D application when available, or a compatible viewer that explicitly lists Q3S. Treat modern-editor compatibility as something to verify, not a consequence of the file being a 3D scene.
Poly support
Poly provides visual features for supported scenes with readable geometry. A scene without meshes may not provide a visible preview. Supported materials and lighting can differ from the original application's presentation.
For a supported model, orbit, pan, and zoom let you inspect its shape. Search by filename, or by visual similarity when visual content is available. Available geometry and scene counts appear in 3D Details.
An optimized rendition of the 3D object or scene is provided to the agent, allowing compact yet information-rich multimodal interaction with 3D files. Ask about visible shape or compare models; use the original application for precise authoring work.
Background and alternatives
The documented Quick3D 3.0 scene layout permits a scene with no mesh records.1 A valid scene file therefore does not necessarily contain an object that a 3D viewer can display.
For modern scene delivery, export glTF or GLB. For individual static meshes, OBJ is another option. Check placement and scale after export and keep the source scene.
Footnotes
- Quick3D format description, preserved by Paul Bourke. Quick3D object and scene formats. ↩ ↩2