Title: Debug Bar
Author: WordPress.org
Published: November 4, 2010
Last modified: March 1, 2026
---
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# Debug Bar
By [WordPress.org](https://profiles.wordpress.org/wordpressdotorg/)
[Download](https://downloads.wordpress.org/plugin/debug-bar.1.1.8.zip)
* [Details](https://wordpress.org/plugins/debug-bar/#description)
* [Reviews](https://wordpress.org/plugins/debug-bar/#reviews)
* [Installation](https://wordpress.org/plugins/debug-bar/#installation)
* [Development](https://wordpress.org/plugins/debug-bar/#developers)
[Support](https://wordpress.org/support/plugin/debug-bar/)
## Description
Adds a debug menu to the admin bar that shows query, cache, and other helpful debugging
information.
A must for developers!
When `WP_DEBUG` is enabled it also tracks PHP Warnings and Notices to make them
easier to find.
When `SAVEQUERIES` is enabled the mysql queries are tracked and displayed.
To enable these options, add the following code to your `wp-config.php` file:
```
define( 'WP_DEBUG', true );
define( 'SAVEQUERIES', true );
```
Add a PHP/MySQL console with the [Debug Bar Console plugin](https://wordpress.org/plugins/debug-bar-console/).
There are numerous other add-ons available to get more insight into, for instance,
the registered Post Types, Shortcodes, WP Cron, Language file loading, Actions and
Filters and so on. Just [search the plugin directory for ‘Debug Bar’](https://wordpress.org/plugins/search/debug+bar/).
## Installation
Use automatic installer.
## Reviews
### [Simple and easy](https://wordpress.org/support/topic/simple-and-easy-536/)
[Lene](https://profiles.wordpress.org/lenesachs/) March 27, 2026
It works…
### [Works perfectly](https://wordpress.org/support/topic/works-perfectly-2898/)
[Michael Galli](https://profiles.wordpress.org/galliweb/) November 14, 2025
Finding bugs is very easy and efficient with that plugin. I can highly recommend
it.
### [Seemingly abandoned](https://wordpress.org/support/topic/seemingly-abandoned/)
[James Hunt](https://profiles.wordpress.org/bonkerz/) July 11, 2025
Debug Bar is still listed in WordPress’s own developer documentation as a go-to
debugging tool, yet it hasn’t been updated in over a year and throws PHP errors.
It’s a clear example of Automattic promoting a tool while failing to maintain it–
a pattern that’s become too common. For a plugin they recommend, its neglect is
frustrating and undermines developer trust.
### [Getting translation errors in WP 6.7](https://wordpress.org/support/topic/getting-translation-errors-in-wp-6-7/)
[Traci Larson](https://profiles.wordpress.org/treysea/) May 23, 2025
This is a very useful plugin, but I am getting errors when WP_DEBUG is set to true
based on the updates in WordPress 6.7. Notice: Function _load_textdomain_just_in_time
was called incorrectly. I hope there will be an update soon!
### [it must be!](https://wordpress.org/support/topic/it-must-be-2/)
[Marcin Pietrzak](https://profiles.wordpress.org/iworks/) November 22, 2023
A plugin without which I cannot imagine my work. It would definitely be much more
difficult.
### [Helpful tool](https://wordpress.org/support/topic/helpful-tool-30/)
[Mehedi Hasan](https://profiles.wordpress.org/b-07/) July 29, 2023
Simple and useful.
[ Read all 69 reviews ](https://wordpress.org/support/plugin/debug-bar/reviews/)
## Contributors & Developers
“Debug Bar” is open source software. The following people have contributed to this
plugin.
Contributors
* [ WordPress.org ](https://profiles.wordpress.org/wordpressdotorg/)
* [ Ryan Boren ](https://profiles.wordpress.org/ryan/)
* [ Peter Westwood ](https://profiles.wordpress.org/westi/)
* [ koopersmith ](https://profiles.wordpress.org/koopersmith/)
* [ Jon Cave ](https://profiles.wordpress.org/duck_/)
* [ mitcho (Michael Yoshitaka Erlewine) ](https://profiles.wordpress.org/mitchoyoshitaka/)
* [ Dion Hulse ](https://profiles.wordpress.org/dd32/)
* [ Juliette Reinders Folmer ](https://profiles.wordpress.org/jrf/)
* [ Konstantin Obenland ](https://profiles.wordpress.org/obenland/)
* [ Andrew Nacin ](https://profiles.wordpress.org/nacin/)
* [ Evan Solomon ](https://profiles.wordpress.org/evansolomon/)
* [ Samuel Wood (Otto) ](https://profiles.wordpress.org/otto42/)
* [ Andrija Vučinić ](https://profiles.wordpress.org/aidvu/)
* [ Joseph Scott ](https://profiles.wordpress.org/josephscott/)
* [ Eoin Gallagher ](https://profiles.wordpress.org/eoigal/)
* [ John James Jacoby ](https://profiles.wordpress.org/johnjamesjacoby/)
“Debug Bar” has been translated into 17 locales. Thank you to [the translators](https://translate.wordpress.org/projects/wp-plugins/debug-bar/contributors)
for their contributions.
[Translate “Debug Bar” into your language.](https://translate.wordpress.org/projects/wp-plugins/debug-bar)
### Interested in development?
[Browse the code](https://plugins.trac.wordpress.org/browser/debug-bar/), check
out the [SVN repository](https://plugins.svn.wordpress.org/debug-bar/), or subscribe
to the [development log](https://plugins.trac.wordpress.org/log/debug-bar/) by [RSS](https://plugins.trac.wordpress.org/log/debug-bar/?limit=100&mode=stop_on_copy&format=rss).
## Changelog
#### 1.1.8
* Add late output escaping where missing in the `WP_Query` panel.
#### 1.1.7
* Resolves a PHP Warning in WP 6.7+.
#### 1.1.6
* 1.1.5 didn’t have the minified CSS rebuilt.
#### 1.1.5
* Update CSS to remove gradient and shadow styles
* Use dashicons as action buttons instead of misaligned text.
#### 1.1.4
* Fix PHP8+ critical error if `php_uname` is disabled
#### 1.1.3
* Fix notices in HTTP Requests panel when a request is stopped/doesn’t finish.
* Decode the SQL in the WP_Query panel.
#### 1.1.2
* Fix error checking in HTTP Requests panel.
#### 1.1.1
* Refactor the HTTP Requests panel:
* Remove jQuery usage
* Properly display response codes
* Better CSS to emphasize errors and long requests ( > 250ms )
#### 1.1
* Add a new panel for HTTP requests using the native WP methods.
* AMP dev mode compatibility.
* Change cache busters to use `filemtime` instead of hardcoded values.
* Minor CSS updates, so themes don’t override the `pre` styles.
#### 1.0.1
* Update object cache panel CSS to be ready for new object-cache.php release with
better stats()
#### 1.0
* Improved compatibility with the WordPress.com toolbar in Jetpack
#### 0.9
* Added panel navigation to toolbar.
* Improved localization support.
* Security fixes.
#### 0.8.4
* Updated to avoid incompatibilities with some extensions.
#### 0.8.3
* Updated to avoid PHP7 Deprecated notices.
#### 0.8.2
* Updated to handle a new deprecated message in WordPress 4.0.
#### 0.8.1
* Minor security fix.
#### 0.8
* WordPress 3.3 compatibility
* UI refresh
* Removed jQuery UI requirement
* Full screen by default
* New debug-bar query parameter to show on page load
* Removed display cookies
* JavaScript error tracking (disabled by default)
#### 0.7
* Made compatible with PHP < 5.2.0
* CSS Tweaks
* Load JavaScript in Footer
* Fixed display issues for WP_Query debug on CPT archives pages
* SQL/DB error tracking
#### 0.6
* Added maximize/restore button
* Added cookie to keep track of debug bar state
* Added post type information to WP_Query tab
* Bug fix where bottom of page was obscured in the admin
#### 0.5
* New UI
* Backend rewritten with a class for each panel
* Many miscellaneous improvements
#### 0.4.1
* Compatibility updates for trunk
#### 0.4
* Added DB Version information
* Updated PHP Warning and Notice tracking so that multiple different errors on
the same line are tracked
* Compatibility updates for trunk
#### 0.3
* Added WordPress Query infomation
* Added Request parsing information
#### 0.2
* Added PHP Notice / Warning tracking when WP_DEBUG enabled
* Added deprecated function usage tracking
#### 0.1
* Initial Release
## Community plugin
This plugin is developed and supported by a community. [Contribute to this plugin](https://github.com/WordPress/debug-bar)
## Meta
* Version **1.1.8**
* Last updated **1 month ago**
* Active installations **20,000+**
* WordPress version ** 3.4 or higher **
* Tested up to **7.0**
* Languages
* [Chinese (Taiwan)](https://tw.wordpress.org/plugins/debug-bar/), [Czech](https://cs.wordpress.org/plugins/debug-bar/),
[Dutch](https://nl.wordpress.org/plugins/debug-bar/), [English (Canada)](https://en-ca.wordpress.org/plugins/debug-bar/),
[English (US)](https://wordpress.org/plugins/debug-bar/), [French (France)](https://fr.wordpress.org/plugins/debug-bar/),
[German](https://de.wordpress.org/plugins/debug-bar/), [Italian](https://it.wordpress.org/plugins/debug-bar/),
[Japanese](https://ja.wordpress.org/plugins/debug-bar/), [Polish](https://pl.wordpress.org/plugins/debug-bar/),
[Portuguese (Brazil)](https://br.wordpress.org/plugins/debug-bar/), [Portuguese (Portugal)](https://pt.wordpress.org/plugins/debug-bar/),
[Russian](https://ru.wordpress.org/plugins/debug-bar/), [Spanish (Chile)](https://cl.wordpress.org/plugins/debug-bar/),
[Spanish (Mexico)](https://es-mx.wordpress.org/plugins/debug-bar/), [Spanish (Spain)](https://es.wordpress.org/plugins/debug-bar/),
[Spanish (Venezuela)](https://ve.wordpress.org/plugins/debug-bar/), and [Swedish](https://sv.wordpress.org/plugins/debug-bar/).
* [Translate into your language](https://translate.wordpress.org/projects/wp-plugins/debug-bar)
* Tag
* [debug](https://wordpress.org/plugins/tags/debug/)
* [Advanced View](https://wordpress.org/plugins/debug-bar/advanced/)
## Ratings
4.1 out of 5 stars.
* [ 51 5-star reviews ](https://wordpress.org/support/plugin/debug-bar/reviews/?filter=5)
* [ 3 4-star reviews ](https://wordpress.org/support/plugin/debug-bar/reviews/?filter=4)
* [ 1 3-star review ](https://wordpress.org/support/plugin/debug-bar/reviews/?filter=3)
* [ 1 2-star review ](https://wordpress.org/support/plugin/debug-bar/reviews/?filter=2)
* [ 13 1-star reviews ](https://wordpress.org/support/plugin/debug-bar/reviews/?filter=1)
[Your review](https://wordpress.org/support/plugin/debug-bar/reviews/#new-post)
[See all reviews](https://wordpress.org/support/plugin/debug-bar/reviews/)
## Contributors
* [ WordPress.org ](https://profiles.wordpress.org/wordpressdotorg/)
* [ Ryan Boren ](https://profiles.wordpress.org/ryan/)
* [ Peter Westwood ](https://profiles.wordpress.org/westi/)
* [ koopersmith ](https://profiles.wordpress.org/koopersmith/)
* [ Jon Cave ](https://profiles.wordpress.org/duck_/)
* [ mitcho (Michael Yoshitaka Erlewine) ](https://profiles.wordpress.org/mitchoyoshitaka/)
* [ Dion Hulse ](https://profiles.wordpress.org/dd32/)
* [ Juliette Reinders Folmer ](https://profiles.wordpress.org/jrf/)
* [ Konstantin Obenland ](https://profiles.wordpress.org/obenland/)
* [ Andrew Nacin ](https://profiles.wordpress.org/nacin/)
* [ Evan Solomon ](https://profiles.wordpress.org/evansolomon/)
* [ Samuel Wood (Otto) ](https://profiles.wordpress.org/otto42/)
* [ Andrija Vučinić ](https://profiles.wordpress.org/aidvu/)
* [ Joseph Scott ](https://profiles.wordpress.org/josephscott/)
* [ Eoin Gallagher ](https://profiles.wordpress.org/eoigal/)
* [ John James Jacoby ](https://profiles.wordpress.org/johnjamesjacoby/)
## Support
Got something to say? Need help?
[View support forum](https://wordpress.org/support/plugin/debug-bar/)