Speed Optimizer – The All-In-One Performance-Boosting Plugin
by SiteGround · Performance
Also makes 4 other plugins · 3.1M+ installs across the portfolio →
Boost your website performance and page speed, and increase conversions with powerful caching, frontend, media, and environment optimizations.
72 health vs 67 average across 1,076 Performance plugins
Directory ranking optimization
How it's scored →How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.
Well optimized
Biggest win: Support resolution
To rank higher: Mark more forum threads resolved — the resolved ratio feeds the ranking.
Get the full rank-higher report →Daily downloads
Since 2022-10-05 · 1,421 days · wp.org + Plugin Pulse archive
30-day downloads
Rolling 30-day volume · peaks are release surges
1.6M
now · peak 5.3M
Directory rank vs rivals
wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you
Rating trend
Star average over time · dips mark rough releases
Update activity
How busy the existing users are, measured as downloads in the last 30 days for every 1,000 active sites. A spike means a new release everyone's pulling; a long, slow decline means an aging user base that updates less.
Release cadence
Actively maintainedHow often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.
10
releases in the last 12 months
2mo ago
latest release · v7.8.0
18
tagged releases on record
Recent releases
What its installed base runs
via wordpress.orgShare of active installs on each version of this plugin · 81% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.
Estimated active installs
The public count shows “1M+”. Our estimate pins where the real number sits.
Modeled within the band wp.org reports; tightens as we track daily.
Install history · since 2015-06-01 · 1,500 observations
Estimated value
What this plugin might earn a year, and what it might sell for. Modeled from public signals; we don't see anyone's books.
Est. annual revenue
Est. acquisition value
No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price.
Details
Recent review vibe
read from the latest 12 reviews to 2026-06-17Reviewers split between genuine praise for speed gains and quick support fixes, and real frustration over plugin conflicts, unwanted installs, and messy incremental updates.
Recent reviews
All reviews on wp.org ↗- ★★★★★ marjoriecurtis2mo ago
Edit: Received an email from customer support to contact them to resolve. I was a bit skeptical that I was going to be stuck with the issue. However, after a few minutes the conflict between the 2 plugins was discovered and within a few minutes a solution was found. Up until about 6 months ago, I would have given the plugin 5 stars and worked well. However, it started creating problems with the plugin Amelia that I use for booking appointments. When both plugins are active, the booking options don’t function and customers are unable to use the website. I kept hoping that updates would fix the issue, but that haven’t. This topic was modified 1 month ago by marjoriecurtis. Reason: issue corrected
Read on wp.org ↗ - ★★★★★ aegei3mo ago
Great performance plugin. Improved Core Web Vitals and reduced CLS without heavy tweaking.
Read on wp.org ↗ - ★★★★★ allop243mo ago
I started using the plugin according to its recommendations. Once I started analyzing with Lighthouse I realized the program was delaying load speeds. Piece by piece I removed functions and now I think I am better off without it.
Read on wp.org ↗ - ★★★★★ Lawson3mo ago
We don’t like when a plugin installs other plugins on our website without our consent. When a program does that it’s called a trojan horse. What’s worse is that siteground installed an AI plugin on our website, literally the least secure, highest risk and fastest growing (which also means least stable) tech that exists today. Plugins have backdoor access to our website, to our customers and everything that we sell, therefore they need to be secure, stable & reliable and ideally run from the same server as our website. The trouble with AI tech is we don’t know who all of the stakeholders are and we aren’t given sufficient reassurance of security.
Read on wp.org ↗ - ★★★★★ jamesrlapalm4mo ago
The plugin works pretty well, but the fact that auto cache purge is not triggered by category image changes is a huge con. This means that I have to give our shop manager admin level access so she can have access to the manual cache purge link. This topic was modified 2 months, 1 week ago by jamesrlapalm. Reason: Change rating
Read on wp.org ↗ - ★★★★★ manhattancenters4mo ago
They just fixed some goofy setting for emails now 2 days later other stuff. How about release all at once??? Getting just as bad as some other developer not testing their products. This topic was modified 2 months, 1 week ago by manhattancenters.
Read on wp.org ↗ - ★★★★★ Angie Wood4mo ago
If I use this, it always breaks my site, I check it regally but always end up turning it off.
Read on wp.org ↗ - ★★★★★ Tassoman5mo ago
A quite disappointing open source contribution
Read on wp.org ↗
Latest updates
via wp.org changelogRecent releases and news for this plugin
- — Version 7.8.0 Release Date: Jun 22th, 2026 CSS combination and minification improvements JS combination and minification improvements Cache flushing improvements File Caching improvements 7.8.0
- — Version 7.7.11 Release Date: May 7th, 2026 File Caching improvements Lazy Loading improvements CSS minifier improvements 7.7.11
- — Version 7.7.10 Release Date: May 5th, 2026 Email Service improvements 7.7.10
- — Version 7.7.9 Release Date: Apr 15th, 2026 Security improvements 7.7.9
- — Version 7.7.8 Release Date: Apr 7th, 2026 Memcache improvements WP Cli improvements Layout improvements Heartbeat compatibility improvements 7.7.8
- — Version 7.7.7 Release Date: Feb 16th, 2026 Version bump 7.7.7
Known vulnerabilities
via Wordfence Intelligence3 disclosed vulnerabilities on record for this plugin, all fixed in the current version. Sites on older versions stay exposed until they update.
- Medium · 6.4 Speed Optimizer <= 7.8.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Image Tag Attributes ↗2026-08-18 CVE-2026-15421 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 7.8.0 Patched in 7.8.1
- Critical · 9.8 SiteGround Optimizer <= 5.0.12 - Missing Authorization ↗
Vulnerability records provided by Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. License and terms.
CVE records: Copyright 1999-2026 The MITRE Corporation. CVE terms of use.
Behavioral tests
via WP HiveAutomated install-time checks, tested on PHP 8.1.12 · WP 7.0
Languages
via translate.wordpress.orgTranslated into 29 languages, 13 at 90% or more
Plus 5 more locales with partial translations.
Growth timeline
Install-tier crossings we have observed, and how long each tier took to outgrow
No tier crossings observed yet.
Competes with
The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).
-
Cachify 9K+ installs · 4.5★ · 3 shared tags B -
FastPixel Cache – Optimize Page Speed: Compress Images, Minify, Clean Database & CDN 4K+ installs · 4.7★ · 3 shared tags A -
Cache Using Gzip 400+ installs · 4.1★ · 3 shared tags A -
LiteSpeed Cache 7M+ installs · 4.8★ · 2 shared tags A -
WP Super Cache 1M+ installs · 4.3★ · 2 shared tags A -
W3 Total Cache 900K+ installs · 4.4★ · 2 shared tags A
Embed this report card
Drop a live Pulse card for Speed Optimizer – The All-In-One Performance-Boosting Plugin into a readme, a review or a deck. It updates itself.
<iframe src="https://plugins.wpmayor.com/embed/sg-cachepress" width="480" height="300" style="border:0" loading="lazy" title="Speed Optimizer – The All-In-One Performance-Boosting Plugin — Plugin Pulse"></iframe> Speed Optimizer – The All-In-One Performance-Boosting Plugin: 1M+ active installs, 4.2★ (639 reviews). Plugin Pulse (WP Mayor), as of 2026-08-25. https://plugins.wpmayor.com/plugin/sg-cachepress