Preview plugin
This plugin adds a preview button to the toolbar. Pressing the button opens a dialog box showing the current content in a preview mode. It also adds a menu item Preview under the File and View menu dropdowns.
Basic setup
tinymce.init({
  selector: 'textarea',  // change this value according to your HTML
  plugins: 'preview',
  toolbar: 'preview'
});
Toolbar buttons
The Preview plugin provides the following toolbar buttons:
| Toolbar button identifier | Description | 
|---|---|
  | 
Previews the current editor contents.  | 
These toolbar buttons can be added to the editor using:
- 
The
toolbarconfiguration option. - 
The
quickbars_insert_toolbarconfiguration option. 
Menu items
The Preview plugin provides the following menu items:
| Menu item identifier | Default Menu Location | Description | 
|---|---|---|
  | 
File  | 
Previews the current document.  | 
These menu items can be added to the editor using:
- 
The
menuconfiguration option. - 
The
contextmenuconfiguration option.