The MetaMan plugin is a very lightweight and easy to learn extension that works from the frontend of a Joomla site. It's very simple: you navigate through the site pages and edit meta tags where necessary.
Video review of the MetaMan extension, designed to simplify SEO optimization of Joomla sites, namely to edit meta tags of pages from the external interface of the site.
Why do you need separate extensions for SEO optimization?
- for the convenience of filling in generally accepted meta tags relevant for SEO
- for filling in meta tags of the Open Graph protocol used by social networks to format posts corresponding to the site pages
More details in the video review: