lookup> .dir

.DIR·File Extension

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

Data & Textapplication/x-director

Quick facts

Extension.dir

File typeDIR Data & Text

MIME typeapplication/x-director

CategoryData & Text

Charset—

Compressible—

What is .dir

What is a .dir file?

A .dir file is a DIR 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/x-director. When serving .dir over HTTP, set the Content-Type header as shown in Developer info below.

Related entities: it maps to application/x-director — and is delivered over HTTP via the Content-Type header.

How to open .dir files

Use VS Code or Notepad++ to open and edit .dir 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/x-director

Common software that reads/writes .dir:

VS CodeNotepad++Sublime Textjq

Relation chain

.dirextension of

format

DIR Data & Textserved as

mime type

application/x-directorsent via header

http header

Related extensions

Related MIME types

application/x-director

.dir .dcr .dxr

Common uses

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

How to edit .dir 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 .dir files

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

Frequently asked questions

What programs can open .dir 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 .dir file?

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

What is the relationship between .dir and the application/x-director MIME type?

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

Sources & standards

Updated 2026-09-13

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