Melissa Cabral

A simple, lightweight plugin that displays useful technical information on pages and posts to aid in developing WordPress Classic themes. Provides quick access to things that are sometimes hidden, like post/page ID, slug, taxonomy terms, and post type slug. Theme Inspector tells you exactly what conditional tags are true on each view, and what template file loaded on each page view.
<ul>
<li>Use In Conjunction with the <a href="https://docs.google.com/drawings/d/1hJ0MpHO3HKBT5KsTpGtc_gDYZ5pi-HyxNcRtmPBBULE" rel="nofollow ugc">WP Template Hierarchy Document</a>.</li>
<li>Theme Inspector is only visible to logged in Administrators.</li>
<li>Appears on the right-side of the Toolbar (admin bar).</li>
</ul>

Theme Inspector

A developer's inspector to illuminate the WordPress Template Hierarchy and help with building WordPress Classic themes.

JS Morisset

The JSM Show Order Metadata for WooCommerce HPOS plugin displays order meta keys and unserialized values in a metabox at the bottom of the WooCommerce HPOS order and WooCommerce Subscriptions editing pages.
Note that if you’re NOT using WooCommerce HPOS (High-Performance Order Storage), available since WooCommerce v8.2, then your WooCommerce orders are post objects and you should use the <a href="https://wordpress.org/plugins/jsm-show-post-meta/" rel="ugc">JSM Show Post Metadata</a> plugin instead.
There are no plugin settings – simply install and activate the plugin.
<h4>Available Filters for Developers</h4>
Filter the order meta shown in the metabox:
<pre><code>'jsmsom_metabox_post_types' ( array $post_types )
</code></pre>
Array of supported HPOS post types (i.e. ‘woocommerce_page_wc-orders’ and ‘woocommerce_page_wc-orders–shop_subscription’).
<pre><code>'jsmsom_metabox_table_metadata' ( array $metadata, $order_obj )
</code></pre>
Array of regular expressions to exclude meta keys:
<pre><code>'jsmsom_metabox_table_exclude_keys' ( array $exclude_keys, $order_obj )
</code></pre>
Capability required to show order meta:
<pre><code>'jsmsom_show_metabox_capability' ( 'manage_options', $order_obj )
</code></pre>
Capability required to delete order meta:
<pre><code>'jsmsom_delete_meta_capability' ( 'manage_options', $order_obj )
</code></pre>
Icon for the delete order meta button:
<pre><code>'jsmsom_delete_meta_icon_class' ( 'dashicons dashicons-table-row-delete' )
</code></pre>
<h4>Related Plugins</h4>
<ul>
<li><a href="https://wordpress.org/plugins/jsm-show-comment-meta/" rel="ugc">JSM Show Comment Metadata</a></li>
<li><a href="https://wordpress.org/plugins/jsm-show-order-meta/" rel="ugc">JSM Show Order Metadata for WooCommerce HPOS</a></li>
<li><a href="https://wordpress.org/plugins/jsm-show-post-meta/" rel="ugc">JSM Show Post Metadata</a></li>
<li><a href="https://wordpress.org/plugins/jsm-show-term-meta/" rel="ugc">JSM Show Term Metadata</a></li>
<li><a href="https://wordpress.org/plugins/jsm-show-user-meta/" rel="ugc">JSM Show User Metadata</a></li>
<li><a href="https://wordpress.org/plugins/jsm-show-registered-shortcodes/" rel="ugc">JSM Show Registered Shortcodes</a></li>
</ul>

JSM Show Order Metadata for WooCommerce HPOS

Must need for Developer

Show WooCommerce order metadata in a metabox when editing HPOS orders - a great tool for debugging issues with HPOS order metadata.

Theme Inspector vs JSM Show Order Metadata for WooCommerce HPOS