Vito Tardia

<p>With Simple SEO you can set your custom content for the “keywords” and “description” meta tags in each post or page using the standard WordPress metabox interface.</p>
<p>You can also set default values for each meta tag which will be displayed in all your pages, although this is not a SEO best practice.</p>
<h4>Available languages</h4>
<ul>
<li>English</li>
<li>Italian</li>
<li>Romanian by Web Geek Science (<a href="http://webhostinggeeks.com/" rel="nofollow ugc">Web Hosting Geeks</a>)</li>
<li>Serbo-Croatian by Borisa Djuraskovic (<a href="http://www.webhostinghub.com/" rel="nofollow ugc">Webhostinghub</a>)</li>
<li>Ukrainian by Michael Yunat (<a href="//getvoip.com/blog" rel="nofollow ugc">http://getvoip.com</a>)</li>
<li>Indonesian by Jordan Silaen (<a href="//chameleonjohn.com" rel="nofollow ugc">http://chameleonjohn.com</a>)</li>
</ul>
<h3>Manual Database Update</h3>
<p>In order to update your database you can run the following queries using your favorite MySQL admin tool, changing your table prefix if needed (a backup is strongly recomended).</p>
<pre><code>UPDATE wp_postmeta SET meta_key = '_sseo_meta_keywords' WHERE meta_key = 'meta_keywords';

UPDATE wp_postmeta SET meta_key = '_sseo_meta_description' WHERE meta_key = 'meta_description';
</code></pre>


Simple SEO Pack

Simple SEO is a quick way to add HTML meta tags to your site and pages using WP integrated custom fields feature.

Jayesh Parejiya

<p>Add Meta Tag For WordPress is a Free metadata plugin for the WordPress that can optimize your web site for more efficient indexing of your content by search engines.</p>
<h4>Features</h4>
<p>Metadata Option about the sections above:</p>
<ul>
<li>Enable Meta Tag</li>
<li>Display in Page</li>
<li>Display in Post </li>
<li>(Display in Page or  Display in Post) + Display Schema Org</li>
</ul>


Add Meta Tag For WordPress

Add Meta Tag For WordPress very easy setup.
I am really loving it!
Let me know if need help :)

Awesome and great plugin for Add Meta Tag For WordPress

this plugin that you can add metadata your web site for more efficient indexing and easier sharing of your content.

Simple SEO Pack vs Add Meta Tag For WordPress