PostMeta Viewer – Custom Fields Inspector

PostMeta Viewer is an essential utility for WordPress developers who work with custom fields and post meta. Whether you’re using Advanced Custom Fields (ACF), Pods, Toolset, or custom-coded meta fields, this plugin provides a clean and developer-friendly interface to explore, search, and analyze post meta data across your site.

It is designed strictly as a read-only inspection tool, making it safe for production environments.

Key Features

• Complete Post Meta Overview
  Browse all posts with total custom field counts.

• Detailed Meta Inspection
  View all meta keys and values for any individual post.

• Powerful Search & Filtering
  – Search across post titles, content, meta keys, and meta values
  – Filter by post type, post status, and date range
  – Filter by specific meta key existence
  – Filter by meta value type (string, array, JSON, numeric, empty)

• Post Edit Screen Meta Box
  View custom fields directly inside the post edit screen.

• Developer-Friendly Data Display
  Proper formatting for serialized, array, and JSON meta values.

• Post Statistics
  Quick insights into total posts and filtered results.

• Responsive Admin UI
  Works smoothly across all screen sizes.

Ideal For

• ACF Developers – Debug and verify stored ACF field data
• Plugin Developers – Inspect custom meta added by plugins
• Theme Developers – Validate custom field implementations
• Site Debugging – Identify and resolve metadata issues
• Migration Projects – Analyze existing meta structures
• Learning WordPress – Understand how post meta works internally

Usage

Getting Started

1. After activation, go to PostMeta Viewer (top-level menu)
2. View a list of all posts along with their custom field counts
3. Use search and filter options to narrow results
4. Click View Details to inspect meta for a specific post

Using Search & Filters

1. Search Box – Search across post titles, content, meta keys, and values
2. Post Type Filter – Filter posts, pages, or custom post types
3. Meta Key Filter – Filter by existing meta keys
4. Date Range – Filter posts by creation date
5. Post Status – Published, draft, pending, etc.
6. Value Type Filter – String, array, JSON, numeric, or empty
7. Click Apply Filters to update results

Viewing Meta Details

1. Click View Details from the main list
2. View a table of all meta keys and values
3. Serialized and complex data is displayed in readable format
4. Use Back to List to return

Post Edit Screen Meta Box

1. Edit any post or page
2. Locate the Custom Fields Inspector meta box
3. Instantly view all custom fields for that post
4. Ideal for quick debugging during content editing

License

This plugin is licensed under the GPL v2 or later.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or any later version.

This program is distributed without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose.