WordPress debug bar plugins

Query Monitor is the developer tools panel for WordPress and WooCommerce.

Debug Bar Rewrite Rules adds a new panel to Debug Bar that displays information about WordPress Rewrites Rules (if used).

Extends the Query Monitor and Debug Bar plugins for ElasticPress queries.

Black Bar is an unobtrusive Debug Bar for WordPress developers that attaches itself to the bottom of the browser window.

Extends the debug-bar plugin with additional tabs to measure runtimes between checkpoints and lookup variable content.

Displays all the hooks( Actions and Filters ) for the current request in Debug Bar panel.

Debug Bar Cron adds a new panel to Debug Bar that displays information about WP scheduled events.

Log/Debug the PHP code in your Theme/Plugin with your Browser Console (no extension needed)

Debug Bar List Script & Style Dependencies is an add-on to WordPress Debug Bar

BlackBox is a plugin for plugin and theme developers. It collects and displays useful debug information (errors, executed queries, globals, profiler).

Debug Bar Post Types adds a new panel to the Debug Bar with detailed information about registered post types. Requires "Debug Bar" plugin.

Debug Bar Transients adds a new panel to Debug Bar that displays information about WordPress transients.

Debug Bar Shortcodes adds a new panel to the Debug Bar that displays the registered shortcodes for the current request.

Displays the current rewrite rules for the site. Requires the debug bar plugin.

Debug Bar Constants adds three new panels to the Debug Bar that display the defined WP and PHP constants for the current request.

An add-on for the Debug Bar plugin that will log and profile remote requests made through the HTTP API

Debug Bar Localization adds a new panel to the Debug Bar which displays information on the locale for your install and the language files loaded.

Debug Bar Taxonomies adds a new panel to the Debug Bar with detailed information about registered taxonomies. Requires "Debug Bar" plugin.

Output debug information regarding elementor on a page such as elements and performance data. Requires Debug Bar

Very simple extention to the debug bar to get a list of post meta for the current post

Displays Super Global valiables for the current request.Like $_POST, $_GET, and $_COOKIE. Requires the debug bar plugin.

Debug Bar Plugin Activation adds a new panel to the Debug Bar which displays plugin (de-)activation and uninstall errors.

A simple add-on for the Debug Bar plugin to replace the button text with the database query count and time.

Show screen info of the current admin page in a new tab within the debug bar

Look up items in object cache.

Adds a WooCommerce debug panel to the Debug Bar plugin.

A Debug Bar plugin that lets you trace what plugins are causing database queries.

A simple add-on for Debug Bar that tabulates all roles and capabilities

The Debug Bar plugin is great, but sometimes I want to turn it off for a short time. This plugin lets you do that with a keystroke (ctrl + d).

Debug Bar extension that adds information about the sidebars and widgets on the current page. Integrates with Content Aware Sidebars plugin.

Debug Bar Widgets adds a new panel to the Debug Bar that displays all registered widgets.

A tiny plugin to display all enqueued scripts and style

Adds a High Performance Order Storage (HPOS) status indicator to the admin bar that shows the status of HPOS on the site, perfect for debugging.

Development environment for Wordpress developers

Indabug is the debug console for WordPress.

A benchmarking plugin to profile slow hooks.

Extends the Debug Bar plugin for the Sophi.io Site Automation service.

Bypass any get_transient() calls on a per page basis by clicking the link in the Admin Bar.