by WPMU DEV - Your All-in-One WordPress Platform 4.7 (1,488 reviews)

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN

Name: Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN
Rating: 4.7 (1488 reviews)
Author: WPMU DEV - Your All-in-One WordPress Platform

Optimize PageSpeed Performance & Core Web Vitals, Advanced Cache, Minify CSS & JavaScript, Inline Critical CSS, Defer CSS & JS, Smush & Lazy Load, CDN

Hummingbird Performance ranks #599 among WordPress.org plugins with 70,000+ active installations, is #41 of 1,658 in the Performance category, a 4.7/5 rating from 1,488 reviews, and was last updated Sep 1, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Tested up to WP 7.0.8 (Current: 7.1.4)

v3.21.2 Current Version v3.21.2

Updated 2 months ago Last Update on 01 Sep, 2026

Refreshed 18 hours ago Last Refreshed on

#41 of 1,658 in Performance Top 1% by installs Downloads -42.4% this week

View on WordPress.org

Rank

#599

— No change

Active Installs

70K+

-5.7%

KW Avg Position

16.6

0.2 better

Downloads

5.8M

+71 today

Support Resolved

100%

— No change

Rating

94%

Review 4.7 out of 5

4.7 (1,488 reviews)

Next Milestone 80K

Total Progress 24.6%

70K+ 80K+

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Need 7,539 more installs to reach 80K+

Rank Changes

Current #599

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

4.7

1,488 reviews

Overall 94%

1,319 (89%)

81 (5%)

22 (1%)

14 (1%)

52 (3%)

Support Threads Overview

Resolved

Unresolved

Total Threads

Resolved

Unresolved

100%

Resolution Rate

Security History

Source: WPVulnerability

8 known vulnerabilities on record · 3 in the last 24 months · checked 1 week ago

Sep 4, 2026

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN [hummingbird-performance] < 3.21.2

CVE-2026-19224 · Fixed in v3.21.2
Dec 17, 2025

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN [hummingbird-performance] < 3.21.1

CVE-2026-83627 · Fixed in v3.21.1
Dec 17, 2025

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN [hummingbird-performance] < 3.18.1

CVE-2025-14437 · Fixed in v3.18.1
Aug 7, 2024

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN [hummingbird-performance] < 3.9.2

CVE-2024-43118 · Fixed in v3.9.2
Aug 7, 2024

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN [hummingbird-performance] < 3.9.2

CVE-2024-43117 · Fixed in v3.9.2
Apr 22, 2024

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN [hummingbird-performance] < 3.7.4

CVE-2024-32792 · Fixed in v3.7.4
Mar 20, 2023

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN [hummingbird-performance] < 3.4.2

CVE-2023-1478 · Fixed in v3.4.2
Mar 23, 2022

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN [hummingbird-performance] < 3.3.2

CVE-2022-0994 · Fixed in v3.3.2

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Plugin Details

Version: 3.21.2
Last Updated: Sep 01, 2026
Requires WP: 6.4+
Tested Up To: 7.0.8
PHP Version: 7.4 or higher
Author: WPMU DEV - Your All-in-One WordPress Platform

Support & Rating

Rating: ★ ★ ★ ★ ★ 4.7
Reviews: 1,488
Support Threads: 1
Resolved: 100%

Keywords

Critical CSS cache caching minify css performance

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who want to improve page load speed and Core Web Vitals scores without deep technical expertise. It solves slow site performance by scanning for issues and offering one-click fixes like caching, minification, deferring CSS/JS, and Cloudflare integration.

Full-page, browser, and Gravatar caching
Minify CSS and JavaScript
Defer CSS and JavaScript
GZIP compression
Cloudflare cache and APO integration
Font optimization (preload, swap fonts)
Save and apply config presets
Uptime monitoring and alerts

Frequently Asked Questions

Common questions about Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN

Yes! Of course, our cache suite is more than enough, but if you already use WP Rocket or W3 Total Cache, the special monitoring tools Hummingbird offers still make it worth it. To ensure compatibility, only activate overlapping features in one of the plugins.

Yes! Hummingbird is built to take full advantage of Cloudflare features. Just plug in your API to get started.

Yes! Hummingbird works great with ecommerce plugins like WooCommerce and MarketPress. For best results, when configuring full-page cache, follow the WooCommerce recommended cache settings. Hummingbird will exclude the cart, my account and checkout pages to keep content dynamic.

There are plenty of factors involved in why you’d have WordPress slow. Hummingbird’s scanning and one-click fixes can work out why your site is slow, and with one click, speed up WordPress for you. Easy peasy!

The free Hummingbird plugin is a powerful suite of WordPress speed optimization features! You can deliver big improvements in your page speed in mere minutes using our one-click implementation of recommended fixes. Some of the reviews above show you the results you can get. Hummingbird Pro is available as part of the WPMU DEV Membership, and adds automated scanning, uptime monitoring, enhanced minify compression (with 2x the regular optimization), and CDN hosted minification. This will make your site even faster. Membership also gets you all our premium WordPress plugins, including Smush Pro, for the very best image optimization with image resizing, lazy load, and next-gen WebP convert, and 24/7 WordPress support. Hummingbird is a great free plugin, and Hummingbird Pro is even better. You can find out more here.

Asset Optimization is a great way to speed up your site but moving, combining, using minify, and rearranging CSS and JavaScript (.JS) files can also mess with styling and break functionality. We recommend making incremental changes and testing your site as you go so you can undo the changes if something breaks. And remember, don’t panic. If something goes wrong you can start over with the click of a button :)

We take plugin security incredibly seriously; if you have a bug or vulnerability to report, you can do so through the Patchstack Vulnerability Disclosure Program. It’s fast, easy, and you will be notified when the issue is fixed. Report a vulnerability.