Mats Westholm

<p>This plugin lets the user write a separate description for each post, page, front page or custom post type post which is added as a meta description to the html head.</p>
<p>The individual description for a post or page is typed and edited in a separate text field just below the text field for editing the post text.</p>
<p>You can also add meta description to category, tag and custom taxonomy archive as well as front page.</p>
<p>To add description to a category, go to Dashboard > Posts > Categories. Select a category in the table to the wright or create a new category. Type the description in the text field Description, Weather or not this description will be viewed for visitors on the site is up to each theme. The Easy WP Meta Description plugin will add the description as meta information in the html head.</p>
<p>Descriptions for tag and custom taxonomies are edited in similar fashion.</p>
<p>To edit a front page description you would go to Dashboard > Settings > General and edit Front page meta description.<br />
If you use a static page as Front page the static page Meta description will be used and Front page meta description at general setting will now show.</p>
<p>This plugin relies on the wp_head() action hook. It will only work if the theme uses it. Most themes do.</p>
<p>When deleted uninstall script runs which deletes all changes in the database perfomed by the plugin.<br />
If you dont want to delete your descriptions and other settings only deactivate and dont delete.</p>
<p>Tested with Gutenberg.</p>


Easy WP Meta Description


Unlike the SEO plugins that are available, this plugin is lightweight and all that is needed.


All that is needed

Simple and easy to use wordpress plugin to add the meta description tag in html head

Anand Kumar

Digital Liberation

<p>If you are running a WordPress site then sooner or later you need to insert some kind of code to your website. It is most likley a web analytics code like Google Analytics or may be social media script or some CSS stylesheet or may be Custom fonts. This plugin will do all the magic. Even if you want to insert those codes in a custom post type.</p>
<p>All you have to do is adding appropriate html code.</p>
<p>Don’t forget to wrap your code with proper tags.</p>
<pre><code><script type="text/javascript">
YOUR JS CODE HERE
</script>
</code></pre>
<p>Or for CSS:</p>
<pre><code><style type="text/css">
YOUR CSS CODE HERE
</style>
</code></pre>
<h4>Why use this plugin:</h4>
<ul>
<li>To insert CSS and JavaScript codes to <code><head></code> or before <code></body></code>.</li>
<li>To insert code to <code><head></code> of any single page or post.</li>
<li>To insert code to Custom Post Type [New Feature].</li>
</ul>
<p>The plugin should be compatible with WooCommerce.</p>
<h4>What it does not offer</h4>
<ul>
<li>You can’t insert/execute PHP codes.</li>
</ul>
<p>Almost all WordPress theme do support this “Header and Footer Scripts” plugin. If the codes are not appearing in your site [ask for support] or look at your theme file if they have standard <code>wp_head</code> and <code>wp_footer</code> hooks.</p>
<h4>Important Links</h4>
<p>For furhter information you are welcomed to follow these links:</p>
<ul>
<li><strong><a href="https://github.com/anandkumar/header-and-footer-scripts/wiki" rel="nofollow ugc">Read Documentation</a></strong></li>
<li><strong><a href="https://wordpress.org/support/plugin/header-and-footer-scripts/" rel="ugc">Get Support</a></strong></li>
<li><strong><a href="https://github.com/anandkumar/header-and-footer-scripts" rel="nofollow ugc">GitHub Repository</a></strong></li>
</ul>


Header and Footer Scripts

good

Como es posible que al desinstalar el plugin, si no has borrado el script te deje el código ahi metido. Y luego a averiguar de donde vienen los errores. 

Al desinstalar te deja el código

Header and Footer Scripts plugin allows you to add scripts to WordPress site's  and just before closing  tag.

Easy WP Meta Description vs Header and Footer Scripts