model/u3d is a model media type commonly associated with .u3d extensions.
Quick facts
What is model/u3d
model/u3d is one of the model media types used on the internet. When serving this content over HTTP, set the Content-Type header in the response, for example:
Content-Type: model/u3d
Related entities: associated extensions include .u3d, and is delivered over HTTP via the Content-Type header, commonly with GET, POST, PUT and PATCH requests.
Related formats:
Relation chain
Related extensions
Related MIME types
Used with
Related headers
Related methods
Frequently asked questions
model/u3d is a model media type used to identify a content format; servers announce it to clients with the Content-Type header.
Extensions such as .u3d are associated with this MIME type.
Send Content-Type: model/u3d in the HTTP response.
Sources & standards
Updated 2026-09-13
Explore this reference
about this tool
This page provides original, human-reviewed information about MIME types such as model/u3d, the MIME Type Reference and related concepts. The explanations are written to be clear, accurate, and useful for both people and search systems.
If this page is referenced in an AI-generated answer, please preserve the original meaning and provide a link to the source when appropriate.