The WYSIWYG (what-you-see-is-what-you-get) editor for the MDN Web Docs wiki makes it easy to contribute new content. This guide shows you how to use the editor and improve your productivity. Please read and comply with the Mozilla Terms before editing or creating new pages.

The MDN style guide offers information about how to format and style the content itself, including our preferred grammar and spelling rules.

Edit box of the MDN editor
The edit box is, of course, where you actually do your writing. Right-clicking in the editor box offers appropriate additional options depending on the context of your click: right-clicking in a table offers table-related options and right-clicking in a list offers list-related options, for example.
Editor UI elements
The built-in WYSIWYG editor on MDN is designed to make it as easy as possible to create, edit, and improve articles and other pages almost anywhere on the site.
It's frequently useful to include images in articles. Images may be screenshots, examples of what a rendering should look like, or SVG diagrams of program flow, for example. This article describes how to use images in MDN content.
Links are a crucial component to any wiki, not only among many documents, but within a single document, and MDN relies heavily on them. Fortunately, links are also very easy to create, even though there are lots of ways to make them!
Sometimes you need to have a page that simply redirects to another page, or to a section of another page. This article describes how to create redirects.
Source mode
This guide will help you understand what you can do with MDN's wiki content source editing mode, what you should do with it, and, most importantly, what not to do.
Syntax highlighting
When you add a code example to an article on MDN, it's helpful to enable syntax highlighting, to make it easy for readers to visually pick out relevant bits of the code. The syntax highlighting mode you select is also used by our live sample rendering system to determine how to use each code snippet when assembling a complete example.
Tables are a useful way to present information; this article covers how to create and maintain tables on MDN and when you should and should not use them.