Chrome

Installation

Go to the installation page and click the Add to Chrome button:

Usage

This extension supports both <textarea> and contenteditable elements, and should work on most websites out-of-the-box.

To use the extension, click its toolbar icon after editing some text on the current page.

Configuration

To open the settings page, click the extension's icon and then Options:

Here, you can assign certain markup formats to specific URLs—such as, for example, writing Markdown on GitHub.