Query Monitor

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

Share of active installs on each version of this plugin · 56% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

Refined from the date this plugin crossed into its current band.

No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price.

1. ★★★★★ Andrea Roenning

   2mo ago

   This plugin does an excellent job of displaying information that is helpful in troubleshooting while working on WordPress theme and plugin development. I appreciate how PHP errors and deprecation warnings are grouped together and moved away from the published page view. Being able to see transient updates and SQL queries at a glance is so nice. This topic was modified 1 week, 5 days ago by Andrea Roenning.

   Read on wp.org ↗
2. ★★★★★ androidusercu

   3mo ago

   Saved my sanity today, (Orderable had been calling on a youtube link and added each page load 5s)

   Read on wp.org ↗
3. ★★★★★ Mehraz Morshed

   4mo ago

   I’ve been using Query Monitor since 2023, and I honestly can’t imagine debugging WordPress sites without it anymore. It’s not just a plugin, it’s a complete developer toolbox that sits in the admin bar. It’s lightweight enough to keep running on production sites without noticeable overhead. John Blackbourn has built something truly special here. Five stars isn’t enough. Thank you for this masterpiece.

   Read on wp.org ↗
4. ★★★★★ casualadam

   5mo ago

   This plugin helped me realize a problem right in front of my eyes this whole time. A fantastic tool for troubleshooting database issues!

   Read on wp.org ↗
5. ★★★★★ dochara

   5mo ago

   If you’ve even the smell of an issue with your site, this will track it down so that you can fix it. An indispensable tool for developers.

   Read on wp.org ↗
6. ★★★★★ kloddant

   7mo ago

   Good. Shows a lot of useful stuff. Note that you will need to add /wp-content/db.php to your gitignore. This topic was modified 5 months, 2 weeks ago by kloddant.

   Read on wp.org ↗
7. ★★★★★ tinhnguyenblog

   7mo ago

   Tôi thường tạo các demo web, blog với những lựa chọn khác nhau về theme, plugin. Việc theo dõi hiệu suất backend là rất quan trọng để chọn ra được một combo tốt về hiệu suất.

   Read on wp.org ↗
8. ★★★★★ yodougxd

   7mo ago

   é top zé

   Read on wp.org ↗

Recent releases and news for this plugin

1. — Version 4.0.7 Confirms support for WordPress 7.0 Makes improvements to the admin bar menu Shows database queries on the timeline even when db.php isn’t in place Adds more error highlighting for problems with enqueued JavaScript and CS 4.0.7
2. — Version 4.0.6 Version 4 of Query Monitor adds a new timeline view, and switches from rendering its panels server-side in PHP to efficiently rendering them client-side in Preact. Version 4.0.6 fixes a compatibility issue with the Gener 4.0.6
3. — Version 4.0.5 Ensures closing script tags within data don’t break the output Adds “Doing it Wrong” data to the timeline view More information at querymonitor.com/4 . 4.0.5
4. — Version 4.0.4 Ensures the Scripts panel remains visible when no scripts are enqueued in the header Corrects the display of number formatting in some locales More information at querymonitor.com/4 . 4.0.4
5. — Version 4.0.3 Improves compatibility with plugins that perform non-UTF8 queries or make other use of non-UTF8 data Avoids a PHP warning for undefined file and line number in some stack trace frames Simplifies and standardises the form 4.0.3
6. — Version 4.0.2 Adds further backwards compatibility for third-party plugins that read from the QM data collectors and output their own panels Adds transient updates to the timeline view More information at querymonitor.com/4 . 4.0.2

1 disclosed vulnerability on record for this plugin, fixed in the current version. Sites on older versions stay exposed until they update.

1. High · 7.2 Query Monitor <= 3.20.3 - Reflected Cross-Site Scripting via Request URI ↗
   2026-03-30 CVE-2026-4267 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 3.20.3 Patched in 3.20.4

Automated install-time checks, tested on PHP 8.1.12 · WP 7.0

Translated into 63 languages, 16 at 90% or more

Plus 39 more locales with partial translations.

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

1. 2023-12-06 100K+ → 200K+ up after 1 days in tier
2. 2023-12-05 200K+ → 100K+ down after 7 days in tier
3. 2023-11-28 100K+ → 200K+ up

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

• Code Profiler – WordPress Performance Profiling and Debugging Made Easy 8K+ installs · 4.2★ · 2 shared tags A
• Plugin Detective – Troubleshooting Conflicts 5K+ installs · 3.9★ · 2 shared tags B
• M Monkeyman Rewrite Analyzer 1K+ installs · 4.6★ · 2 shared tags D
• W What Template 1K+ installs · 4.1★ · 2 shared tags D
• Easy PHP Settings 1K+ installs · 4.3★ · 2 shared tags A
• ElasticPress Debugging Add-On 800+ installs · 4.1★ · 2 shared tags B

Embed this report card

Drop a live Pulse card for Query Monitor into a readme, a review or a deck. It updates itself.

Query Monitor: 200K+ active installs, 4.9★ (468 reviews). Plugin Pulse (WP Mayor), as of 2026-08-25. https://plugins.wpmayor.com/plugin/query-monitor