by SiteGround 4.2 (641 reviews)

Speed Optimizer – The All-In-One Performance-Boosting Plugin

Name: Speed Optimizer – The All-In-One Performance-Boosting Plugin
Rating: 4.2 (641 reviews)
Author: SiteGround

Boost your website performance and page speed, and increase conversions with powerful caching, frontend, media, and environment optimizations.

Speed Optimizer ranks #44 among WordPress.org plugins with 1,000,000+ active installations, is #4 of 1,658 in the Performance category, a 4.2/5 rating from 641 reviews, and was last updated Oct 20, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1.4

v7.8.5 Current Version v7.8.5

Updated 1 week ago Last Update on 20 Oct, 2026

Refreshed 18 hours ago Last Refreshed on

#4 of 1,658 in Performance Top 1% by installs Downloads -97.9% this week Actively maintained

View on WordPress.org

Rank

#44

— No change

Active Installs

1M+

-38.1%

KW Avg Position

1.8

— No change

Downloads

109.8M

+449 today

Support Resolved

67%

— No change

Rating

84%

Review 4.2 out of 5

4.2 (641 reviews)

Next Milestone 2M

Total Progress 60.5%

1M+ 2M+

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Need 394,737 more installs to reach 2M+

Rank Changes

Current #44

Change

Best #

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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

4.2

641 reviews

Overall 84%

462 (72%)

26 (4%)

34 (5%)

27 (4%)

92 (14%)

Support Threads Overview

Resolved

Unresolved

Total Threads

Resolved

Unresolved

67%

Resolution Rate

Security History

Source: WPVulnerability

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

Apr 27, 2026

Speed Optimizer – The All-In-One Performance-Boosting Plugin [sg-cachepress] < 7.7.9

CVE-2026-3220 · Fixed in v7.7.9
Oct 16, 2024

Speed Optimizer – The All-In-One Performance-Boosting Plugin [sg-cachepress] < 5.0.13

CVE-2019-25217 · Fixed in v5.0.13
Apr 15, 2024

Speed Optimizer – The All-In-One Performance-Boosting Plugin [sg-cachepress] < 7.5.0

CVE-2024-32532 · Fixed in v7.5.0
Apr 15, 2024

Speed Optimizer – The All-In-One Performance-Boosting Plugin [sg-cachepress] < 7.8.1

CVE-2026-15421 · Fixed in v7.8.1
Mar 14, 2019

Speed Optimizer – The All-In-One Performance-Boosting Plugin [sg-cachepress] < 5.0.13

CVE-2019-25217 · Fixed in v5.0.13
Speed Optimizer – The All-In-One Performance-Boosting Plugin [sg-cachepress] < 5.0.13

Fixed in v5.0.13

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Plugin Details

Version: 7.8.5
Last Updated: Oct 20, 2026
Requires WP: 5.5.1+
Tested Up To: 7.1.4
PHP Version: 7.0 or higher
Author: SiteGround

Support & Rating

Rating: ★ ★ ★ ★ ☆ 4.2
Reviews: 641
Support Threads: 9
Resolved: 67%

Keywords

SiteGround caching nginx performance speed

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who want to improve their site's performance without technical expertise. It solves slow load times and poor Core Web Vitals through caching, code minification, image compression, and environment optimizations.

Dynamic Caching
File-based caching
Memcached object caching
Minify JS, HTML and CSS
Image compression and WebP conversion
Lazy Load Media
Heartbeat Control
Speed Test tool

Frequently Asked Questions

Common questions about Speed Optimizer – The All-In-One Performance-Boosting Plugin

Speed Optimizer – The All-In-One Performance-Boosting Plugin has 1,000,000+ active installations on the WordPress.org plugin directory.

Speed Optimizer – The All-In-One Performance-Boosting Plugin holds a 4.2 out of 5 star rating based on 641 user reviews on WordPress.org.

Speed Optimizer – The All-In-One Performance-Boosting Plugin is developed by SiteGround and published on the official WordPress.org plugin repository.

Speed Optimizer – The All-In-One Performance-Boosting Plugin requires WordPress 5.5.1 or higher, is tested up to WordPress 7.1.4 and needs PHP 7.0 or newer.

Speed Optimizer – The All-In-One Performance-Boosting Plugin has been downloaded 109,776,624+ times from WordPress.org.

The latest version of Speed Optimizer – The All-In-One Performance-Boosting Plugin is 7.8.5. It was last updated on October 20, 2026.

Yes. Speed Optimizer – The All-In-One Performance-Boosting Plugin is a free WordPress plugin available to download and install from the WordPress.org plugin directory.