Theme Support for Post Formats

To configure your theme to support post formats, you can use the following snippets. It lists all available post formats. Of course you can remove unwanted post formats:

add_theme_support( 'post-formats', array(
    'aside',
    'audio',
    'image',
    'link',
    'quote',
    'chat',
    'gallery',
    'status',
    'video'
) );