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.3DML·File Extension

3DML Data & Text — A .3dml file is a 3DML Data & Text. It is a text-based data format widely used for configuration files, data interchange and API payloads.

Data & Texttext/vnd.in3d.3dml

Quick facts

Extension.3dml

File type3DML Data & Text

MIME typetext/vnd.in3d.3dml

CategoryData & Text

Charset—

Compressible—

What is .3dml

What is a .3dml file?

A .3dml file is a 3DML Data & Text. It is a text-based data format widely used for configuration files, data interchange and API payloads.

In the mime-db registry it maps to text/vnd.in3d.3dml. When serving .3dml over HTTP, set the Content-Type header as shown in Developer info below.

Related entities: it maps to text/vnd.in3d.3dml — and is delivered over HTTP via the Content-Type header.

How to open .3dml files

Use VS Code or Notepad++ to open and edit .3dml files.
Any text editor (Notepad, VS Code) can inspect the raw content as text.

Developer info

When served over HTTP, responses should set the following header:

Content-Type: text/vnd.in3d.3dml

Common software that reads/writes .3dml:

VS CodeNotepad++Sublime Textjq

Relation chain

.3dmlextension of

format

3DML Data & Textserved as

mime type

text/vnd.in3d.3dmlsent via header

http header

Related extensions

Related MIME types

Common uses

Configuration files
Data interchange between systems
API request and response payloads
Logs and data exports

How to edit .3dml files

Open the file with VS Code, make your changes and save.
Most editors preserve the original formatting and encoding — avoid changing the charset.

How to create .3dml files

Create a new file and save it with the .3dml extension, or export this format from VS Code.

Frequently asked questions

What programs can open .3dml files?

Common options include VS Code, Notepad++, Sublime Text. You can also open many of these files with built-in viewers or a browser.

How do I create a .3dml file?

Create a new file in any text editor or the app that owns the format and save it with the .3dml extension.

What is the relationship between .3dml and the text/vnd.in3d.3dml MIME type?

text/vnd.in3d.3dml is the media type identifier used for .3dml files during network transfer (for example in the HTTP Content-Type header).

Sources & standards

Updated 2026-09-13

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