lookup> .clkx

.CLKX·File Extension

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

Data & Textapplication/vnd.crick.clicker

Quick facts

Extension.clkx

File typeCLKX Data & Text

MIME typeapplication/vnd.crick.clicker

CategoryData & Text

Charset—

Compressible—

What is .clkx

What is a .clkx file?

A .clkx file is a CLKX 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.crick.clicker. When serving .clkx over HTTP, set the Content-Type header as shown in Developer info below.

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

How to open .clkx files

Use VS Code or Notepad++ to open and edit .clkx 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.crick.clicker

Common software that reads/writes .clkx:

VS CodeNotepad++Sublime Textjq

Relation chain

.clkxextension of

format

CLKX Data & Textserved as

mime type

application/vnd.crick.clickersent via header

http header

Related extensions

Related MIME types

application/vnd.crick.clicker

.clkx

Common uses

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

How to edit .clkx 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 .clkx files

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

Frequently asked questions

What programs can open .clkx 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 .clkx file?

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

What is the relationship between .clkx and the application/vnd.crick.clicker MIME type?

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

Sources & standards

Updated 2026-09-13

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

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