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.AGE·File Extension

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

Data & Textapplication/vnd.age

Quick facts

Extension.age

File typeAGE Data & Text

MIME typeapplication/vnd.age

CategoryData & Text

Charset—

Compressible—

What is .age

What is a .age file?

A .age file is a AGE 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/vnd.age. When serving .age over HTTP, set the Content-Type header as shown in Developer info below.

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

How to open .age files

Use VS Code or Notepad++ to open and edit .age 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/vnd.age

Common software that reads/writes .age:

VS CodeNotepad++Sublime Textjq

Relation chain

.ageextension of

format

AGE Data & Textserved as

mime type

application/vnd.agesent 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 .age 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 .age files

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

Frequently asked questions

What programs can open .age 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 .age file?

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

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

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

Sources & standards

Updated 2026-09-13

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