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JSM Show Post Metadata
Show post metadata (aka custom fields) in a metabox when editing posts / pages - a great tool for debugging issues with post metadata.
The facts
- Rating
- 5★ from 12
- Active installs
- 10k+
- Price
- Free
- Last updated
- 22 Aug 2026
- Added
- Aug 2016
- Requires WP
- 6.0
- Tested up to
- WP 7.1
- Requires PHP
- 7.4.33
- Downloads
- 267,790
Our analysis
AI-assistedJSM Show Post Metadata is a WordPress plugin that displays post metadata, including custom field names and their values, in a metabox at the bottom of the post editing page. It works with posts, pages, and custom post types, providing a straightforward way for users to view metadata without any additional settings required.
The plugin is designed for developers and site administrators who need to manage post metadata efficiently. It includes filters for customising the displayed metadata and capabilities for controlling access to the metabox and deletion of post metadata.
Best for: This plugin suits developers and site administrators managing custom post types and metadata.
What it does well
- ✓Displays post metadata in a metabox
- ✓Works with posts, pages, and custom post types
- ✓No settings required after installation
- ✓Includes filters for developers
Where it falls short
- •Does not support WooCommerce orders with HPOS
- •Limited information on specific features
Verdict
JSM Show Post Metadata provides a simple solution for viewing post metadata in WordPress, though it may not meet the needs of those using WooCommerce HPOS for order management.
From the developer
JS Morisset's own description of JSM Show Post Metadata, lightly tidied.
The JSM Show Post Metadata plugin displays post (ie. posts, pages, and custom post types) meta keys (aka custom field names) and unserialized values in a metabox at the bottom of the post editing page.
Note that if you’re using WooCommerce HPOS (High-Performance Order Storage), available since WooCommerce v8.2, then your WooCommerce orders are NOT post objects and you should use the JSM Show Order Metadata plugin instead.
There are no plugin settings – simply install and activate the plugin.
Available Filters for Developers
Filter the post meta shown in the metabox:
'jsmspm_metabox_table_metadata' ( array $metadata, $post_obj )
Array of regular expressions to exclude meta keys:
'jsmspm_metabox_table_exclude_keys' ( array $exclude_keys, $post_obj )
Capability required to show post meta:
'jsmspm_show_metabox_capability' ( 'manage_options', $post_obj )
Show post meta for a post type (defaults to true):
'jsmspm_show_metabox_post_type' ( true, $post_type )
Capability required to delete post meta:
'jsmspm_delete_meta_capability' ( 'manage_options', $post_obj )
Icon for the delete post meta button:
'jsmspm_delete_meta_icon_class' ( 'dashicons dashicons-table-row-delete' )
Tagged as
purpose
Custom Fields & Post Types
platform
WooCommerce
feature
Roles & Permissions
audience
Developers
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