Page Meta Tags module allows admin easily to update the meta tags of DNN pages in one place. You can easily use this module under Admin Dashboard menu.

In the Page Meta Tags screen you will see all the DNN pages based on your current site portal will be listed on the left panel section. Note: most of the search engine will no longer look into the meta tags keyword.  The red background color means there is a missing meta tag title or description. While the dark grey background color means those meta tags have already been filled in.  The light blue background means you are currently looking into that highlighted page.