For admins, developers, and support staff, Debug This provides a ton of information about your WordPress installation, all from the front-end admin bar.

• The current WP_Query object
• Blog info and options
• Embed providers
• Files in rendered HTML (CSS, images, JavaScript)
• Filters and actions
• Images sizes
• Globals and constants
• Menus
• Object cache stats
• Plugins, must-use plugins, and dropins
• Rewrite rules
• Queries
• PHP and server information
• Post attachments
• Post types
• Scripts and styles enqueued
• Shortcodes
• Sidebars and widgets
• Taxonomies and terms
• Themes
• Users
• WP cron schedules and jobs
• WP debug log

Debug This helps you save time and effort when trying to figure out what's going on. Instead of hardcoding debug snippets or writing complex unit tests for small functionality, you can simply bring to the surface what you need right from the admin bar.

For example, when viewing a single post, you can see:

• a list of post attachments,
• which menus and sidebars are being displayed,
• the post type, post fields, and meta data,
• the current query variables and query string,
• the rewrite rules applied,
• the author,
• the terms,
• and much more.

How do I use Debug This?

1. Make sure the admin bar is enabled in your user profile.
2. Visit any page/post/archive on your website and you will see a Debug This menu item on the admin bar.

What PHP version is this compatible with?

We've tested on PHP >= 5.2.17

Can I request new debug modes?

Certainly! In order to keep the plugin lightweight and performant, requests that are too localized for the greater good may be refused. If that happens, I will gladly help you build your own debug mode.

Can I alter the plugin or build my own debug modes?

Yes! Visit the Extend section to find out how you can thoroughly extend Debug This for your own needs.

0.6.7 - 28.01.2024

• Update: Tested up to WP 6.7

0.6.6 - 18.03.2025

• Fix: Fixed URL query vars

0.6.5 - 28.01.2024

• Update: Tested up to WP 6.7

0.6.4 - 07.01.2022

• Display bug fix
• Added: Sanitization and escapes

0.6.3 - October 10, 2019

• Translation file update

0.6.2 - September 12, 2019

• Translation ready

0.6.1 - June 19, 2018

• Fix bug with anonymous functions in Filters report.

0.6 - May 22, 2018

• Fix bug with static methods in Filters report.

0.5.2 - November 17, 2017

• Improve error handling.

0.5.1 - December 27, 2016

• Prevent conflict with Kint Debugger when Debug Bar is active.

0.5 - December 15, 2016

• Update for WordPress 4.4+
• Add error handling.
• Add mode for unserialized options.
• Add mode for active plugins.
• Add <pre> tags conditionally (not every mode).
• Compatible with Kint wrapper plugins.
• Compatible with custom error logs.
• Remove Bootstrap stylesheet.
• Update POT file.

0.4 - August 29, 2015

• Fix display of global array variables.
• Fix display of current template.
• Fix use of a deprecated function.

0.3.2 - April 17, 2015

• Improve SAVEQUERIES check.

0.3.1 - March 17, 2015

• Fix non-static method call. Thanks Daniele "Mte90" Scasciafratte.
• Fix output for TwentyFifteen theme.
• Replace close button "X" with Dashicon.

0.3

• Added advanced remote fetch for buffer
• Added real saved queries and execution time from original URL - can now be accessed as static properties $queries and $execution_time
• Added get_current_debug_url() method - exposes current URL with debug query
• Added post-meta debug mode. Created new menu section for queried object
• Updated bloginfo mode to true bloginfo values
• Updated wp-debug mode with better logic
• Added functionality for adding header links to the debug mode screen via add_debug_header_link($url, $label, $classes = '')
• Added reset debug log functionality with debug header link for wp-debug mode

0.2.2

• Added backwards compatibility to 3.3.
• Added support for no pretty permalinks.

0.2.1

• Critical fix for PHP <= 5.2 Removed anonymous functions.
• Fixed undefined $debug notices for all versions.

0.02

• Added new debug modes: Apache modules, PHP loaded extensions, file permissions, php.ini, $_SERVER, and execution time.
• Added three functions for getting file ownership and permissions
  • debug_this_get_file_ownership($file)
  • debug_this_get_file_perms($file)
  • debug_this_convert_perms_to_rwx($perms)

0.01

• Debug This Creation

1. Upload to your plugins folder, usually wp-content/plugins/
2. Activate the plugin on the plugin screen.
3. Navigate to the front-end of your website and hover over the 'Debug This' menu item in the admin bar.

The current query, for example.



Enhanced display when a Kint debugger plugin is installed (see Description).