The properties of a document can be exported as metadata on an HTML page easily. This metadata such as keywords or DC.description is used by web crawlers or search engines to enhance user experience or the search rank ratings.

To enable the rendering as metadata, add some Velocity statements to the 'Main Layout'.

#if ($projectdocContext)
${projectdocContext.toHtml($sitemeshPage)}
#end

To add the snippet, follow the following steps:

1. As admin user, select 'Layout' in the 'General configuration'
   

2. Then click 'Create custom' (if you have not already applied changes to the layout) or 'Edit' (if there are already changes to the default provided by Confluence)
   
   
   

    

   If you have not customized your layout yet, you need to click on "Create custom" to create one instead of "Edit" as shown above.

3. Finally add the above snippet after the rendering of the meta elements
   
4. Save the changes