Vito Tardia

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.
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.
<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>
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).
<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.

brainvireinfo

Dynamic URL SEO plugin provides you the facility to add Meta title, keywords and description for those URLs which are generating dynamically in your website.
Nowadays SEO is the most important part of a website for marketing. Sometimes to achieve the batter functionality on our website we need to write custom code and in few cases, we are not able to add the meta title, keywords and description to dynamic pages/posts/custom post types using SEO plugins like Yoast SEO, All in One SEO etc.
At that time using Dynamic URL SEO plugin you can add all the meta details like title, keywords, description, robots. Also by using Dynamic URL SEO, you can update schema for the website, organization, local business and many more.
What is Schema markup?
Schema markup is code (semantic vocabulary) that you put on your website to help the search engines return more informative results for users.
Why are Schemas Important?
Schemas allow search engines and other applications to better understand entities, relationships and actions. Schema.org is actually sponsored by the world’s leading search engines, Google, Microsoft, Yahoo and Yandex. If you’re in the search business or run a website and are interested in improving your organic search performance, schema should be peaking your interest.
Schema Key Features
<ul>
<li>Easy to use, with minimal settings.</li>
<li>Valid markup, test it in Google Structured Data Testing Tool.</li>
<li>Output JSON-LD format, the most recommended by Google.</li>
<li>Supported Google/Schema Markups
<ul>
<li>WebSite Markup</li>
<li>Organization Markup</li>
<li>Local Business Markup</li>
</ul>
</li>
</ul>

Dynamic URL SEO

This plugin is used to add meta title, keywords and description for dynamic URLs which are not available in database.

Simple SEO Pack vs Dynamic URL SEO