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.C11AMC·File Extension

C11AMC Data & Text — A .c11amc file is a C11AMC Data & Text. It is a text-based data format widely used for configuration files, data interchange and API payloads.

Data & Textapplication/vnd.cluetrust.cartomobile-config

Quick facts

Extension.c11amc

File typeC11AMC Data & Text

MIME typeapplication/vnd.cluetrust.cartomobile-config

CategoryData & Text

Charset—

Compressible—

What is .c11amc

What is a .c11amc file?

A .c11amc file is a C11AMC 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.cluetrust.cartomobile-config. When serving .c11amc over HTTP, set the Content-Type header as shown in Developer info below.

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

How to open .c11amc files

Use VS Code or Notepad++ to open and edit .c11amc 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.cluetrust.cartomobile-config

Common software that reads/writes .c11amc:

VS CodeNotepad++Sublime Textjq

Relation chain

.c11amcextension of

format

C11AMC Data & Textserved as

mime type

application/vnd.cluetrust.cartomobile-configsent via header

http header

Related extensions

Related MIME types

application/vnd.cluetrust.cartomobile-config

.c11amc

Common uses

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

How to edit .c11amc 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 .c11amc files

Create a new file and save it with the .c11amc extension, or export this format from VS Code.

Frequently asked questions

What programs can open .c11amc 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 .c11amc file?

Create a new file in any text editor or the app that owns the format and save it with the .c11amc extension.

What is the relationship between .c11amc and the application/vnd.cluetrust.cartomobile-config MIME type?

application/vnd.cluetrust.cartomobile-config is the media type identifier used for .c11amc files during network transfer (for example in the HTTP Content-Type header).

Sources & standards

Updated 2026-09-13

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