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A modular, progressive, and beautiful Markdown and HTML editor. Markdown lets you produce rich HTML-formatted text by writing plain text. You can write code, text in italics or give them a “bolder” format. You can create headings by prefixing them with one or more hash characters (#). The less hashes they have, the more prominent your headings become. Creating links is merely a matter of wrapping some text in brackets and referencing a resource locator, like the ones you’ll find at the bottom of this text. Images can be embedded just the same, except you’ll have to prefix the wrapped text with an exclamation mark. The buttons provided look kind of rough, but that's on purpose, it's up to you to style them and the API helps you do that. Small and focused, progressive, enhance a raw textarea. Markdown, HTML, and WYSIWYG input modes. Text selection persists even across input modes! Built in undo and redo. Entirely customizable styles.

Sir Trevor is rich content editing entirely re-imagined for the web, an intuitive editor for web content which does not presuppose anything about how it will be rendered. Stored in structured JSON with limited inline HTML markup. Trivial to extend and create your own block types. Intuitive interface for creating rich content. Used on a national broadcast news site serving millions of users. Sir trevor content is made up of blocks. By default Sir Trevor ships with a lot of block types, but you can easily add your own. There are more blocks available in the dedicated blocks repository or it's incredibly easy to write your own. ECMAScript 6 shims are bundled in by default; if the platform you wish to run on doesn't support ECMAScript 5 APIs you'll need to shim those yourself. Sir Trevor uses The Guardian's scribe for rich text editing. Supported by Chrome 51+, Safari 9+, Firefox 47+.