Rezerla

<p><strong>Rezerla Post List Field Search</strong> adds a <strong>Search in</strong> dropdown next to the search box on post list screens (<code>edit.php</code>). Search by title, content, slug, custom fields, post meta, or taxonomy — individually or across all configured fields at once.</p>
<ul>
<li>Admin-only — no impact on front-end search</li>
<li>Per post type configuration</li>
<li>Core fields, post meta, and taxonomies</li>
<li>Optional list table columns (Show in table checkbox)</li>
<li>Temporary column and highlight when searching by a single field</li>
<li>Field discovery for meta keys and taxonomies</li>
<li>Lightweight — no frameworks or subscriptions</li>
<li>Default configuration for WP Store Locator (<code>wpsl_stores</code>)</li>
<li>No data collection or external API calls</li>
<li>Translations: English (default), Polish, German, French, Spanish, Italian</li>
</ul>
<h3>Usage example</h3>
<p>On a WP Store Locator store list (<code>edit.php?post_type=wpsl_stores</code>):</p>
<ol>
<li>Enter “Katowice” in the search box.</li>
<li>Select <strong>City</strong> in the dropdown.</li>
<li>Click the search button.</li>
</ol>
<p>URL: <code>edit.php?post_type=wpsl_stores&s=Katowice&rezerla_plfs_field=city</code></p>
<h3>List table columns</h3>
<p>Check <strong>Show in table</strong> in field settings to display meta or taxonomy values on the list.<br />
When searching by a single field, that column appears temporarily and is highlighted even without the checkbox.</p>


Rezerla Post List Field Search

Adds a configurable "Search in" dropdown to WordPress admin post lists for searching by title, content, slug, meta, and taxonomies.

Philip Newcomer

<p>This plugin makes all custom fields (post meta) visible in the “Custom Fields” meta box on post edit screens.</p>


Show Hidden Post Meta

As a plugin developer, I create hidden post meta all the time and sometimes I need to see it to debug it. This does what it says it does, and well. Its simple and hasn't been updated for a while, but I'm glad it exists!

PS: If you need someone to take this one over, let me know. I'll keep it tested and updated if you're unable to.

Still works on 5.5

Makes hidden post meta visible on post edit screens

Rezerla Post List Field Search vs Show Hidden Post Meta