Query Monitor

86 Quality Score

Active Installs

24/30

With 200,000 active installs and a popularity score that exceeds its weight by nearly three times, Query Monitor has clear mainstream traction in the developer community despite its niche purpose.

Update Freshness

25/25

Last updated on 2026-06-20 with a perfect maintenance score, the plugin is actively and recently maintained by an engaged author.

User Rating

15/15

A 98/100 average across 467 ratings signals exceptional user satisfaction and very few complaints relative to the install base.

Support Health

8/15

Only 7 support threads exist with a 57.1% resolution rate, giving a middling support score: the plugin is stable enough that few users need help, but the low thread volume also means there is little community troubleshooting history to draw on.

WP Compatibility

15/15

Tested up to WordPress 7.0 with PHP 7.4 as the minimum and a perfect compatibility score, the plugin supports a broad and current range of WordPress and PHP environments.

Scores higher than 96% of indexed plugins

About

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

Active Installs 200k+

Rating ★★★★½ 4.9/5

Last Updated 2026-06-20 8:17pm GMT

Requires WordPress 6.2+

Tested Up To 7.0.4

Requires PHP 7.4+

Security History

1 known vulnerability, all patched

1 High

Most recent: March 30, 2026

View details ▸

What It Does

Query Monitor adds a developer panel to the WordPress admin toolbar that exposes database queries, PHP errors, HTTP API calls, hooks, enqueued scripts, and template load times on a per-page basis. It is a diagnostic tool, not an optimization plugin: it surfaces what is slow or broken so you can fix it yourself.

Who It's For

This plugin is built for developers, technical site builders, and performance consultants who need to inspect what is actually happening under the hood of a WordPress or WooCommerce site. It is especially valuable on database-heavy stores, custom theme work, and high-traffic sites where slow queries or hidden errors are hard to reproduce.

Who Should Skip It

Non-technical site owners, bloggers, and anyone who just wants a faster site should skip this plugin, since Query Monitor does not cache, minify, or improve performance on its own and the panel adds visible overhead. If you only need raw page speed improvements, a caching plugin will deliver far more value.

The Bottom Line

Query Monitor is the de facto debugging companion for serious WordPress and WooCommerce developers, and its 85.94/100 overall score reflects strong maintenance, near-perfect ratings, and very wide compatibility. It will not make your site faster by itself, so treat it as a diagnostic tool you run alongside a proper caching solution, not a replacement for one. If you build, debug, or audit WordPress sites professionally, install it; if you do not, you will get no value from it.

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Redis Object Cache 92/100

Pick Redis Object Cache when persistent object caching is the bottleneck and you already have Redis available, since Query Monitor can identify the need but cannot cache anything itself.

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Pick Super Page Cache for Cloudflare when you want edge-level page caching at the CDN tier and your site already sits behind Cloudflare.

WP Fastest Cache 89/100

Pick WP Fastest Cache when you want a simple, beginner-friendly page caching plugin with minimal configuration rather than a developer diagnostic tool.