matmattia

Check Tags Descr lists all tags that don’t have description. You can add a description to these tags all in one page.

Check Tags Descr

It lists all tags that don't have description.

svil4ok

Get tags on every single post (is_single()) and put them in meta keywords tag in header (wp_head()). Otherwise it’ll use the keywords define in $default_keywords. Get the_excerpt() and put it in meta description tag in header (wp_head()). Otherwise it’ll use the description define in $default_description.
Requires the wp_head() tag !

Check Tags Descr vs Meta Keywords & Description