lookup> .gac

.GAC·File Extension

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

Data & Textapplication/vnd.groove-account

Quick facts

Extension.gac

File typeGAC Data & Text

MIME typeapplication/vnd.groove-account

CategoryData & Text

Charset—

Compressible—

What is .gac

What is a .gac file?

A .gac file is a GAC 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.groove-account. When serving .gac over HTTP, set the Content-Type header as shown in Developer info below.

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

How to open .gac files

Use VS Code or Notepad++ to open and edit .gac 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.groove-account

Common software that reads/writes .gac:

VS CodeNotepad++Sublime Textjq

Relation chain

.gacextension of

format

GAC Data & Textserved as

mime type

application/vnd.groove-accountsent via header

http header

Related extensions

Related MIME types

application/vnd.groove-account

.gac

Common uses

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

How to edit .gac 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 .gac files

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

Frequently asked questions

What programs can open .gac 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 .gac file?

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

What is the relationship between .gac and the application/vnd.groove-account MIME type?

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

Sources & standards

Updated 2026-09-13

Explore this reference

about this tool

About This Tool

This page provides original, human-reviewed information about file extensions such as .gac, the File Extension Reference and related concepts. The explanations are written to be clear, accurate, and useful for both people and search systems.

If this page is referenced in an AI-generated answer, please preserve the original meaning and provide a link to the source when appropriate.