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.YANG·File Extension

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

Data & Textapplication/yang

Quick facts

Extension.yang

File typeYANG Data & Text

MIME typeapplication/yang

CategoryData & Text

Charset—

Compressible—

What is .yang

What is a .yang file?

A .yang file is a YANG 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 application/yang. When serving .yang over HTTP, set the Content-Type header as shown in Developer info below.

Related entities: it maps to application/yang and is used by YANG among others — and is delivered over HTTP via the Content-Type header.

How to open .yang files

Use VS Code or Notepad++ to open and edit .yang 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: application/yang

Common software that reads/writes .yang:

VS CodeNotepad++Sublime Textjq

Relation chain

.yangextension of

format

YANG Data & Textserved as

mime type

application/yangsent via header

http header

Related extensions

Related MIME types

Related programming languages

YANG

.yang

Common uses

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

How to edit .yang 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 .yang files

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

Frequently asked questions

What programs can open .yang 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 .yang file?

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

What is the relationship between .yang and the application/yang MIME type?

application/yang is the media type identifier used for .yang files during network transfer (for example in the HTTP Content-Type header).

Sources & standards

Updated 2026-08-18

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