by John Blackbourn
4.9 (467 reviews)
Query Monitor
Query Monitor is the developer tools panel for WordPress and WooCommerce.
Tested up to WP 6.9.4 (Current: 7.0)
v4.0.6
Current Version v4.0.6
Updated 2 months ago
Last Update on 11 Apr, 2026
Refreshed 6 days ago
Last Refreshed on
Rank
#251
—
No change
Active Installs
200K+
—
No change
KW Avg Position
30.7
—
No change
Downloads
20.6M
+5,159 today
Support Resolved
53%
—
No change
Rating
98%
Review 4.9 out of 5
4.9
(467 reviews)
Next Milestone 300K
200K+
300K+
0
Ranks to Climb
-
Growth Needed
8,000,000
Active Installs
Pro
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Rank Changes
Current
#251
Change
Best
#
Downloads Growth
Downloads
Growth
Peak
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Upgrade NowReviews & Ratings
4.9
466 reviews
Overall
98%
5
451
(97%)
4
3
(1%)
3
2
(0%)
2
0
(0%)
1
10
(2%)
Tracked Keywords
Showing 3 of 3| Keyword | Position | Change | Type | Updated |
|---|---|---|---|---|
| query monitor | 13 | — | Tag | 3 weeks ago |
| debug bar | 14 | — | Tag | 3 weeks ago |
| debug | 65 | — | Tag | 3 weeks ago |
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Support Threads Overview
Resolved
Unresolved
15
Total Threads
8
Resolved
7
Unresolved
53%
Resolution Rate
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- Version
- 4.0.6
- Last Updated
- Apr 11, 2026
- Requires WP
- 6.1+
- Tested Up To
- 6.9.4
- PHP Version
- 7.4 or higher
- Author
- John Blackbourn
Support & Rating
- Rating
- ★ ★ ★ ★ ★ 4.9
- Reviews
- 467
- Support Threads
- 15
- Resolved
- 53%
Keywords
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Frequently Asked Questions
Common questions about Query Monitor
In addition to this, you can set an authentication cookie which allows you to view Query Monitor output when you're not logged in, or when you're logged in as a user who cannot usually see Query Monitor's output. See the Settings panel for details.
Does Query Monitor itself impact the page generation time or memory usage?
Short answer: Yes, but only a little.
Long answer: Query Monitor has a small impact on page generation time because it hooks into a few places in WordPress in the same way that other plugins do. The impact is negligible.
On pages that have an especially high number of database queries (in the hundreds), Query Monitor currently uses more memory than I would like it to. This is due to the amount of data that is captured in the stack trace for each query. I have been and will be working to continually reduce this.
Can I prevent Query Monitor from collecting data during long-running requests?
Yes, you can call do_action( 'qm/cease' ) to instruct Query Monitor to cease operating for the remainder of the page generation. It will detach itself from further data collection, discard any data it's collected so far, and skip the output of its information.
This is useful for long-running operations that perform a very high number of database queries, consume a lot of memory, or otherwise are of no concern to Query Monitor, for example:
Backing up or restoring your site
Importing or exporting a large amount of data
Running security scans
Does Query Monitor itself impact the page generation time or memory usage?
Short answer: Yes, but only a little.
Long answer: Query Monitor has a small impact on page generation time because it hooks into a few places in WordPress in the same way that other plugins do. The impact is negligible.
On pages that have an especially high number of database queries (in the hundreds), Query Monitor currently uses more memory than I would like it to. This is due to the amount of data that is captured in the stack trace for each query. I have been and will be working to continually reduce this.
Can I prevent Query Monitor from collecting data during long-running requests?
Yes, you can call do_action( 'qm/cease' ) to instruct Query Monitor to cease operating for the remainder of the page generation. It will detach itself from further data collection, discard any data it's collected so far, and skip the output of its information.
This is useful for long-running operations that perform a very high number of database queries, consume a lot of memory, or otherwise are of no concern to Query Monitor, for example:
Backing up or restoring your site
Importing or exporting a large amount of data
Running security scans
In addition, Query Monitor transparently supports add-ons for the Debug Bar plugin. If you have any Debug Bar add-ons installed, deactivate Debug Bar and the add-ons will show up in Query Monitor's menu.
Where can I suggest a new feature or report a bug?
Please use the issue tracker on Query Monitor's GitHub repo as it's easier to keep track of issues there, rather than on the wordpress.org support forums.
Is Query Monitor already included with my hosting?
Some web hosts bundle Query Monitor as part of their hosting platform, which means you don't need to install it yourself. Here are some that I'm aware of:
Altis Cloud.
WordPress VIP, although users need to be granted the view_query_monitor capability even if they're an Administrator. See the WordPress VIP documentation for details.
Can I click on stack traces to open the file in my editor?
Yes. You can enable this on the Settings panel.
How can I report a security bug?
You can submit a private security vulnerability report to Query Monitor via the Security tab on the GitHub repo. The GitHub Security Advisory process facilitates private collaboration on security issues. You'll receive credit for a valid report and a CVE if necessary.
Do not report security issues on the WordPress.org support forums or via email. Thank you.
Do you accept donations?
I am accepting sponsorships via the GitHub Sponsors program. If you work at an agency that develops with WordPress, ask your company to provide sponsorship in order to invest in its supply chain. The tools that I maintain probably save your company time and money, and GitHub sponsorship can now be done at the organisation level.
In addition, if you like the plugin then I'd love for you to leave a review. Tell all your friends about it too!
Where can I suggest a new feature or report a bug?
Please use the issue tracker on Query Monitor's GitHub repo as it's easier to keep track of issues there, rather than on the wordpress.org support forums.
Is Query Monitor already included with my hosting?
Some web hosts bundle Query Monitor as part of their hosting platform, which means you don't need to install it yourself. Here are some that I'm aware of:
Altis Cloud.
WordPress VIP, although users need to be granted the view_query_monitor capability even if they're an Administrator. See the WordPress VIP documentation for details.
Can I click on stack traces to open the file in my editor?
Yes. You can enable this on the Settings panel.
How can I report a security bug?
You can submit a private security vulnerability report to Query Monitor via the Security tab on the GitHub repo. The GitHub Security Advisory process facilitates private collaboration on security issues. You'll receive credit for a valid report and a CVE if necessary.
Do not report security issues on the WordPress.org support forums or via email. Thank you.
Do you accept donations?
I am accepting sponsorships via the GitHub Sponsors program. If you work at an agency that develops with WordPress, ask your company to provide sponsorship in order to invest in its supply chain. The tools that I maintain probably save your company time and money, and GitHub sponsorship can now be done at the organisation level.
In addition, if you like the plugin then I'd love for you to leave a review. Tell all your friends about it too!