angular-lightweight-markdown-editor is extremely light weight editor (v0.0.3 12kb) for markdown. It doesn't use any fancy text editors but just that basic textarea. This means you can add it to your project without fear of huge transfer sizes.

Requires only angular.js and angular-sanitize.js libraries.

Editor displays preview if showdown.js is included in to the project.

Install using bower

bower install angular-lightweight-markdown-editor

Include CSS and JS to project

<script src="angular-lightweight-markdown-editor/dist/angular-lightweight-markdown-editor.min.js"></script>

Add dependecy to your angular application

angular.module("myapp", [
    "ngSanitize",
    "angular-lightweight-markdown-editor"
]);

Include editor into your html

<markdown-editor></markdown-editor>

See demo for example code