PluginSift

LiteSpeed Cache vs Speed Optimizer – The All-In-One… (2026)

Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.

LiteSpeed Cache

LiteSpeed Cache

4.8(2,726)

7.0M+ active installs

Free

Updated 2 days ago
View LiteSpeed Cache
VS
Speed Optimizer – The All-In-One…

Speed Optimizer – The All-In-One…

4.2(630)

1.0M+ active installs

Free

Updated 1 month ago
View Speed Optimizer – The All-In-One…

Quick Verdict

As of April 2026, LiteSpeed Cache has a higher user rating (4.8/5 from 2,726 reviews) and leads in active installations (7.0M+ vs 1.0M+). Both are free WordPress plugins. LiteSpeed Cache has accumulated 129M+ total downloads while Speed Optimizer – The All-In-One… has 95M+. LiteSpeed Cache has a higher support resolution rate (71% vs 68%).

Expert Insight

As of February 2026, LiteSpeed Cache and Speed Optimizer differ mainly by hosting compatibility and caching depth. LiteSpeed Cache, with 7M active installs and a 4.8/5 rating, delivers server-level caching, advanced image optimization, and QUIC.cloud CDN features free within usage quotas. Its optional premium QUIC.cloud services start near $2/month depending on traffic and usage. Speed Optimizer, from SiteGround (1M installs, 4.2/5 rating), offers full-page file caching on any host but reserves advanced server and Memcached caching for SiteGround customers. Both have similar 67% support resolution. LiteSpeed is better for performance-focused users on LiteSpeed or OpenLiteSpeed servers, offering deeper control. Speed Optimizer suits SiteGround-hosted sites seeking easy one-click improvements and integrated maintenance tools. Overall, LiteSpeed Cache provides broader optimization features and scalability across hosting environments, while Speed Optimizer excels in tightly integrated SiteGround hosting contexts.

Analysis by PluginSift editorial team

Who Should Use Which?

Overall Recommendation

LiteSpeed Cache. It’s more versatile, higher-rated, and performs independently of hosting providers, offering a richer feature set and scalability across multiple environments.

Best for Beginners

Speed Optimizer – The All-In-One Performance-Boosting Plugin. Its straightforward interface and automatic optimization make it easier for new WordPress users, especially on SiteGround hosting.

Best for Developers

LiteSpeed Cache. It offers granular controls over cache rules, object caching, CDN integration, and QUIC.cloud APIs ideal for technical fine-tuning and complex multi-server setups.

Best for Budget

LiteSpeed Cache. All main features are free, with QUIC.cloud paid only beyond quota (typically starting from about $2/month), while Speed Optimizer’s strongest features require SiteGround hosting costs.

Best for WooCommerce

Both support WooCommerce, but LiteSpeed Cache handles private cache and ESI blocks natively for logged-in shoppers, giving it an edge for high-traffic stores.

Pricing Comparison

LiteSpeed Cache is entirely free as a plugin, with optional paid QUIC.cloud services like CDN, Critical CSS, and LQIP starting near $2/month depending on usage. Its core optimization and caching functions remain unrestricted. Speed Optimizer is also free but ties its most valuable features—dynamic caching, Memcached, and 85% image compression—to SiteGround-hosted accounts, which start at around $3.99/month for hosting. This makes LiteSpeed the more cost-efficient choice for broader hosting independence.

Pricing verified as of April 2026

Feature Comparison

LiteSpeed Cache excels with server-level caching, image optimization (AVIF/WebP), Redis/Memcached support, automatic Critical CSS, preload crawler, and QUIC.cloud CDN integration. It balances depth with flexibility across hosts. Speed Optimizer focuses on simplicity, integrating dynamic caching, Memcached, and speed testing with Google PageSpeed but restricts these to SiteGround servers. Its frontend tools—minify, lazy load, HTTPS enforce—work anywhere but lack deeper infrastructure-level control.

Compatibility Notes

Both plugins support multisite, WooCommerce, and popular builders like Elementor, Divi, Beaver Builder, and Avada. LiteSpeed adds deeper REST API and bbPress integration, plus OpenLiteSpeed and QUIC.cloud interoperability, whereas Speed Optimizer’s full performance stack is exclusively functional on SiteGround-hosted environments.

Detailed Comparison

Rating
4.8/5LiteSpeed Cache
◄
Speed Optimizer – The All-In-One…4.2/5
Total Reviews
2,726LiteSpeed Cache
◄
Speed Optimizer – The All-In-One…630
Active Installs
7.0M+LiteSpeed Cache
◄
Speed Optimizer – The All-In-One…1.0M+
Total Downloads
129M+LiteSpeed Cache
◄
Speed Optimizer – The All-In-One…95M+
Support Resolution
71%LiteSpeed Cache
◄
Speed Optimizer – The All-In-One…68%
Last Updated
2 days agoLiteSpeed Cache
◄
Speed Optimizer – The All-In-One…1 month ago
First Released
2016LiteSpeed Cache
Speed Optimizer – The All-In-One…2014
Age
10 yearsLiteSpeed Cache
Speed Optimizer – The All-In-One…12 years
WP Requires
5.3+LiteSpeed Cache
Speed Optimizer – The All-In-One…4.7+
PHP Requires
7.2+LiteSpeed Cache
Speed Optimizer – The All-In-One…7.0+
Business Model
FreeLiteSpeed Cache
Speed Optimizer – The All-In-One…Free
Latest Version
7.8.1LiteSpeed Cache
Speed Optimizer – The All-In-One…7.7.7

Rating Breakdown

LiteSpeed Cache

4.8/5(2,726 reviews)
5
93%
4
2%
3
1%
2
1%
1
4%

Speed Optimizer – The All-In-One…

4.2/5(630 reviews)
5
72%
4
4%
3
5%
2
4%
1
14%

Recent Reviews

LiteSpeed Cache Reviews

by dajuan20

Fast & Smooth

Site speed improved a lot after using this. Easy setup n great caching options. Pages load way faster now. really happy with it tbh 👍

by treeflips

BEST CACHE PLUGIN – enterprise performance, features, reliability

I’ve been using LiteSpeed server for over 10 years, LiteSpeed cache for nearly 10 years (almost since the beginning). They keep developing and innovating, nothing else even comes close.

by unkgraphics

Works great with Hostinger

Works great with Hostinger. I’ve had to toy with a few of the settings to get the optimized results I was looking for but that was easy to do.

Speed Optimizer – The All-In-One… Reviews

by Tassoman

Memcached only available inside commercial environment

A quite disappointing open source contribution

by danmcf

Needs to be better

This is a good plugin and very helpful, but there are two big downsides: A disrespectful popup that asks you to give them all of your personal data. This is nothing new, but there are no cookies a

by kearra69

Nice Speed Improvement

Started using it to optimize my site. Speed got better after turning on some settings. The interface is simple & easy to understand. Still a few things to tweak, but overall pretty helpful. Tnkz devs.

Frequently Asked Questions

Is LiteSpeed Cache or Speed Optimizer – The All-In-One… more popular?
LiteSpeed Cache has 7.0M+ active installations while Speed Optimizer – The All-In-One… has 1.0M+. LiteSpeed Cache is the more widely-used plugin as of April 2026.
Which has better ratings — LiteSpeed Cache or Speed Optimizer – The All-In-One…?
LiteSpeed Cache has a 4.8/5 rating from 2,726 reviews, while Speed Optimizer – The All-In-One… has a 4.2/5 rating from 630 reviews.
Are LiteSpeed Cache and Speed Optimizer – The All-In-One… free?
LiteSpeed Cache is free and Speed Optimizer – The All-In-One… is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — LiteSpeed Cache or Speed Optimizer – The All-In-One…?
As of April 2026, LiteSpeed Cache has a 71% support resolution rate while Speed Optimizer – The All-In-One… has a 68% rate.
Which plugin is updated more frequently?
LiteSpeed Cache was last updated 2 days ago and Speed Optimizer – The All-In-One… was last updated 1 month ago.
Which plugin offers more free features?
LiteSpeed Cache offers more free features overall. All core caching, frontend, and image optimization features are fully available at no cost, only limited by QUIC.cloud usage quotas. Speed Optimizer limits dynamic caching, Memcached, and deep server optimizations to SiteGround-hosted users, making its most powerful tools environment-dependent rather than freely available.
Which plugin provides better value for non-SiteGround hosting?
For non-SiteGround hosting, LiteSpeed Cache is the better value. It provides advanced features like Critical CSS generation, Redis/Memcached object caching, and QUIC.cloud CDN, many of which remain free within generous quotas. Speed Optimizer’s best accelerations—server-side caching, Memcached, and image compression—are unavailable outside SiteGround, leaving only frontend optimizations active elsewhere.
What is the difference between LiteSpeed Cache and Speed Optimizer?
LiteSpeed Cache operates at the server level and integrates deeply with LiteSpeed or OpenLiteSpeed servers, offering superior caching and performance control, while still functioning partially on other hosts. Speed Optimizer centers around SiteGround’s hosting stack and enables dynamic caching and Memcached only there. LiteSpeed is broad and modular; Speed Optimizer is host-optimized and simplified.

Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.