by WordPress Performance Team 4.3 (51 reviews)

Performance Lab

Name: Performance Lab
Rating: 4.3 (51 reviews)
Author: WordPress Performance Team

Performance plugin from the WordPress Performance Team, which is a collection of standalone performance features.

Performance Lab ranks #304 among WordPress.org plugins with 100,000+ active installations, is #33 of 6,651 in the Media category, a 4.3/5 rating from 51 reviews, and was last updated Aug 26, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1.4

v4.2.0 Current Version v4.2.0

Updated 2 months ago Last Update on 26 Aug, 2026

Refreshed 18 hours ago Last Refreshed on

#33 of 6,651 in Media Top 1% by installs Downloads -28.4% this week

View on WordPress.org

Rank

#304

— No change

Active Installs

100K+

-48.3%

KW Avg Position

15.6

0.4 worse

Downloads

3.7M

+110 today

Support Resolved

50%

— No change

Rating

86%

Review 4.3 out of 5

4.3 (51 reviews)

Next Milestone 200K

Total Progress 87.8%

100K+ 200K+

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Rank Changes

Current #304

Change

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

4.3

51 reviews

Overall 86%

39 (76%)

2 (4%)

3 (6%)

0 (0%)

7 (14%)

Support Threads Overview

Resolved

Unresolved

Total Threads

Resolved

Unresolved

50%

Resolution Rate

Security History

Source: WPVulnerability

1 known vulnerability on record · 0 in the last 24 months · checked 1 week ago

May 18, 2023

Performance Lab [performance-lab] < 2.3.0

CVE-2022-47174 · Fixed in v2.3.0

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Plugin Details

Version: 4.2.0
Last Updated: Aug 26, 2026
Requires WP: 6.9+
Tested Up To: 7.1.4
PHP Version: 7.4 or higher
Author: WordPress Performance Team

Support & Rating

Rating: ★ ★ ★ ★ ☆ 4.3
Reviews: 51
Support Threads: 2
Resolved: 50%

Keywords

diagnostics measurement optimization performance site health

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners and developers who want to try upcoming performance improvements before they land in WordPress core. It solves the problem of discovering and activating individual experimental performance feature plugins from the WordPress Performance Team in one place.

Embed Optimizer
Enhanced Responsive Images
Image Placeholders
Image Prioritizer
Instant Back/Forward
Modern Image Formats
Performant Translations
Speculative Loading

Frequently Asked Questions

Common questions about Performance Lab

The primary purpose of the Performance Lab plugin is to allow testing of various performance features for which the goal is to eventually land in WordPress core. It is essentially a collection of "feature plugins", which makes it different from other performance plugins that offer performance features which are not targeted at WordPress core and potentially rely on functionality that would not be feasible to use in WordPress core. The list of available features will regularly change: Existing features may be removed after they have been released in WordPress core, while new features may be added in any release.

Per the primary purpose of the plugin (see above), it can mostly be considered a beta testing plugin for the various performance features it includes. However, it's essential to understand that utilizing it comes with inherent risks. Users are encouraged to proceed with caution and understand that they are doing so at their own risk.

Feedback is encouraged and much appreciated, especially since this plugin is a collection of future WordPress core features. If you have suggestions or requests for new features, you can submit them as an issue in the Performance Lab GitHub repository. If you need help with troubleshooting or have a question about the plugin, please create a new topic on our support forum.

The Performance team and WordPress community take security bugs seriously. We appreciate your efforts to responsibly disclose your findings, and will make every effort to acknowledge your contributions. To report a security issue, please visit the WordPress HackerOne program.

Contributions are always welcome! Learn more about how to get involved in the Core Performance Team Handbook.