Ryuhei Yokokawa

Adds all ACF fields into the content being analyzed by Yoast’s WordPress SEO Plugin
This plugin gets every string out of ACF (Advanced Custom Fields) and puts it into the SEO analysis for Yoast’s WordPress SEO plugin using the <code>wpseo_pre_analysis_post_content</code> filter hook.
This plugin is specifically made for ACF and its field types so you’ll need to be using ACF. This should work with Flexible Content and Repeaters too.
Requirements: 
1. <a href="https://wordpress.org/plugins/wordpress-seo/">Yoast’s WordPress SEO</a> 
1. <a href="https://wordpress.org/plugins/advanced-custom-fields/">Elliot Condon’s Advanced Custom Fields</a>
TL;DR for below note: Ignore keyword count on Yoast’s first tab (General), click onto the second tab (Page Analysis).
NOTE: The plugin may appear to not work on first look. The data is affected, but since the first tab of Yoast’s SEO plugin uses front-end Javascript to count the number of times the word is used in the Content field, it won’t count the true keyword density of your page.
Another note: If you don’t display whatever string that this plugin adds to analysis, it won’t count either.
Check us out too: <a href="http://y-designs.com" rel="nofollow ugc">Y-Designs, Inc</a>

WordPress SEO ACF Content Analysis

I was going to complain that it was picking up fields that shouldn't be picked up, but that's what the filter is for. Very easy to use. It started working instantly without any configuration.



Works well

This Plugin adds all ACF fields into the content being analyzed by Yoast's Wordpress SEO…

Acato

Richard Korthuis

This plugin is no longer updated, but is open for adoption 
As of Yoast SEO version 16.7 the functionality provided by this plugin is now <a href="https://developer.yoast.com/customization/apis/rest-api/" rel="nofollow ugc">part of the Yoast SEO plugin</a> itself. This plugin will no longer be updated, but is open for adoption. If you are interested in adopting this plugin, please contact the authors.
Are you using WordPress for a headless set-up, using the WP REST API? And would you like to use the Yoast SEO plugin just like you would for any other project? This plugin adds the meta tags generated by the Yoast SEO plugin to the WP REST API output, allowing your headless set-up to implement them. Also when you are using Yoast SEO Premium you have the option to retrieve redirects throught the API: this plugin adds a custom endpoint (<code>/wp-rest-yoast-meta/v1/redirects</code>) to provide those redirects in a JSON format. Since Yoast 11.0 JSON LD Schema.org data is also supported and is now also available through the WP REST API when using this plugin.
<h3>Installation from within WordPress</h3>
<ol>
<li>Visit ‘Plugins > Add New’ (or ‘My Sites > Network Admin > Plugins > Add New’ if you are on a multisite installation).</li>
<li>Search for ‘WP REST Yoast Meta’.</li>
<li>Activate the WP REST Yoast Meta plugin through the ‘Plugins’ menu in WordPress.</li>
</ol>
<h3>Installation manually</h3>
<ol>
<li>Upload the <code>wp-rest-yoast-meta</code> folder to the <code>/wp-content/plugins/</code> directory.</li>
<li>Activate the WP REST Yoast Meta plugin through the ‘Plugins’ menu in WordPress.</li>
</ol>

WP REST Yoast Meta

Adds meta tags as generated by Yoast SEO to the WP REST API. And adds a custom endpoint to retrieve all redirects as they are set in Yoast SEO Premium …

WordPress SEO ACF Content Analysis vs WP REST Yoast Meta