suppress

Custom Fields to Meta Tags lets you leverage WordPress custom fields to generate <code><meta></code> tags in your site’s <code><head></code> section.
Simply add a custom field to your post or page with a key that starts with cfmt, and the plugin will automatically turn it into a meta tag.
Example: 
– Custom field key: <code>cfmtdescription</code> 
– Custom field value: <code>Description of the post/page</code> 
– Output in <code><head></code>:
 
<h3>Key Features</h3>
<ul>
<li>Lightweight, zero-configuration – just activate and use.</li>
<li>Prefix-based system (<code>cfmt</code>) to avoid conflicts.</li>
<li>Works with posts, pages, and custom post types.</li>
<li>Useful for creating:
<ul>
<li>Meta descriptions</li>
<li>Author or copyright tags</li>
<li>Custom SEO tags</li>
</ul>
</li>
</ul>
<h3>Why use this plugin?</h3>
Most SEO plugins are heavy and packed with features you may not need. If you only want to generate custom meta tags directly from WordPress custom fields, this plugin is the simplest solution.
No settings page, no bloat — just pure functionality.

Custom Fields to Meta Tags

Use WordPress custom fields (with a prefix) to automatically output SEO meta tags (like description) in the  section of your posts and pages.

Farhad Sakhaei

DediData

ParsMizban

This plugin optimizes WordPress for better ranking in Google and other Search Engines 
* Add post excerpt as Meta Description
Validated by: 
https://wpreadme.com 
https://wordpress.org/plugins/developers/readme-validator

Smart SEO

Smart SEO - WordPress Search Engine Optimization Tools

Custom Fields to Meta Tags vs Smart SEO