Performance Lab v4.2.0
Performance plugin from the WordPress Performance Team, which is a collection of standalone performance features.
Plugin Auditor is an independent service and is not affiliated with, endorsed by, or sponsored by Performance Lab or its developer. Disclaimer.
- Audit coverage Up to date 30 versions audited
- On Plugin Auditor since Sep 3, 2026
- Last audited Sep 3, 2026
Compatibility & requirements
The PHP and WordPress versions this plugin needs, and how current its version support is.
- Requires PHP 7.4+
- Requires WordPress 6.9+
- Tested up to WP 7.0 WP 7.1.3 is current
- Version adoption 48% run the current version
Audit scores by category
125 checksHow this plugin scores across the six areas we audit, from security to accessibility.
- 110 Passed
- 13 Warnings
- 2 Failed
32 of 37 checks passed.
55 of 61 checks passed.
11 of 12 checks passed.
6 of 6 checks passed.
1 of 3 checks passed.
5 of 6 checks passed.
Code footprint
How much code ships in this plugin, and the file types that make it up.
ZIP file size
84.5 KB
227.1 KB unzipped
Total files
31
across all file types
Lines of PHP
5,399
in 27 files Medium
File types
- PHP
- JS
- AVIF
- TXT
Top issues
The most important findings from the latest audit, ordered by severity.
- 0 Critical
- 5 High
- 11 Medium
- 34 Low
This is a preview of notable findings. Full file-level results, line numbers and code context are in the scan.
View full reportHow scores changed across versions
Across 30 audited versions of Performance Lab, Performance improved the most (+25). No category regressed over this span. The codebase shrank 50% in size.
Audited 1.9.0 → 4.2.0 · 30 versions
How issues changed across versions
Findings by severity for each audited version, so you can see which issues were fixed over time.
Download momentum
How fast this plugin is being installed lately, and whether that pace is rising or slowing.
Last 7 days
6,328
downloads
Today
1,135
downloads
Week over week
−5%
vs previous week
Month over month
−48%
vs previous month
Download trend: Declining. Abandonment risk: None.
Version intelligence
52% of installs run an older version
≈ 52.5K+ sites on a lower-scoring version.
- Other
- v3.9
- v4.0
- v4.1
- v4.2
Maintenance & history
How actively this plugin is kept up, from its last update to its release history.
Last updated
This month
Jul 1, 2026
Actively maintainedRelease cadence
~ every 28 days
average between releases
Total releases
43
since Mar 2022 · 4 yrs
Contributors & developers
The people credited with building and maintaining this plugin.
Running Performance Lab in Your Site?
Performance Lab and its trademarks are used only to identify the plugin analyzed and remain the property of their owners. This is an independent Plugin Auditor audit, not affiliated with, sponsored by, or endorsed by the plugin's developer. Metadata may come from WordPress.org; scores, findings, classifications, and visualizations are independently generated by Plugin Auditor. Full disclaimer.