This addon is a plugin. You need to extract it to your /plugins folder to install it.
Turns the default text area into an HTML5 editor that generates valid and semantic markup.
Wysihtml5 brings you WYSIWYG editing like you've never before seen in Vanilla using the HTML5 wysihtml5 editor by Xing! It seamlessly integrates with Vanilla itself and delivers fully valid and semantic markup. It's super easy to use and it fits right in no matter what theme you're using. Here are some of the highlights of Wysihtml5:
It's fast and lightweight (smaller than TinyMCE, Aloha, ...)
Auto-linking of urls as-you-type
Generates valid and semantic HTML5 markup (even when the content is pasted from MS Word)
Uses class names instead of inline styles
Unifies line break handling across browsers
Uses sandboxed iframes in order to prevent identity theft through XSS
Speech-input for Chrome
Besides that, it's compatible with all major browsers and degrades gracefully to a normal textarea on unsupported browsers. You won't find a more awesome and useful WYSIWIG editor anywhere!