Technical MIME Specification & Web Server Guide

model/stl

Technical overview, official IANA specification, header magic bytes, and server configuration snippets for .STL files (Stereolithography 3D File).

File Extension

.stl

Content-Type Header

model/stl

Format Category

3D & CAD

Standard Specification

IANA Registered Standard

Description & Usage

3D geometry mesh format composed of triangular facets used for 3D printing.

HTTP Server Content-Type Configuration Code

# Nginx mime.types configuration for .stl
types {
    model/stl    stl;
}

OS Compatibility Matrix

Windows

macOS

Linux

Android

iOS

Want to test header signatures or binary files?

Run binary magic byte inspection in Magic Byte Detector.

Frequently Asked Questions

The official MIME content type for .stl files is "model/stl". Web servers use this header to instruct browsers how to render or process .stl data.