WP Super Cache review: the simplest cache plugin for WordPress?

WP Super Cache is the cache plugin for people who don't want to become cache experts. Made by Automattic (the company behind WordPress.com), it's perhaps the most accessible cache plugin that exists.

But is "simple" enough? Or are you missing too many features compared to WP Rocket and LiteSpeed Cache? In this review, I thoroughly test WP Super Cache and give an honest assessment: who does it work for, and who doesn't it work for?

Made by Automattic: WordPress.com's own cache plugin

WP Super Cache isn't just any plugin. It's developed by Automattic, the company that runs WordPress.com.

Why is that important?

1. Battle-tested at billion scale

WordPress.com hosts millions of websites. WP Super Cache runs on that entire infrastructure. It's tested under extreme load that normal sites never encounter.

2. Full WordPress integration

Automattic knows WordPress inside out (they have the founder on the team). WP Super Cache is built with deep understanding of WordPress internals.

3. Reliable updates

Automattic has resources to keep the plugin current. Updates are consistent, security is top priority.

4. Free without limitations

No freemium model, no upsells. 100% free, always.

The result?

A cache plugin that may not have the most features, but is absolutely reliable.

The simplest cache plugin: by design

WP Super Cache has one mission: make page caching as simple as possible.

What makes it simple?

Minimal settings

Where W3 Total Cache has hundreds of options, WP Super Cache has maybe 20. And you can leave most on default.

Clear interface

No cryptic jargon. Just checkboxes with understandable labels. "Enable caching" - does what it says.

Three caching modes

Instead of ten different methods, WP Super Cache has three:

1. Simple - Basic caching, always works
2. Expert - Faster via mod_rewrite (Apache)
3. WP-Caching - For edge cases

For 90% of users: choose Expert mode, done.

Setup wizard

On first use: a wizard that guides you through basic setup. 3 clicks, you're done.

The result:

Even absolute beginners can set up WP Super Cache without reading documentation.

Static file caching: the core function

WP Super Cache does one thing, and does it well: generate and serve static HTML files.

How does it work?

Step 1: Visitor comes to your site

WordPress normally generates the entire page:

• Database queries
• Template rendering
• PHP processing

This takes time (often 500ms-2s).

Step 2: WP Super Cache saves HTML

The generated HTML is saved as .html file in wp-content/cache/.

Step 3: Next visitor gets instant HTML

Instead of starting WordPress, Apache/Nginx directly serves the HTML file. This happens in milliseconds.

Performance difference:

My test site (20 plugins, Elementor):

• Without cache: 1.8s load time, 380ms TTFB
• With WP Super Cache: 0.6s load time, 80ms TTFB
• 67% faster

Simple but effective.

CDN support: works with the basics

WP Super Cache has CDN support, but it's... basic.

What can it do?

You can set a CDN URL. WP Super Cache rewrites URLs of:

• Images
• CSS files
• JavaScript files

From https://yourwebsite.com/image.jpg to https://cdn.yourwebsite.com/image.jpg.

That's it.

No advanced features like:

• Zone-specific URLs
• Multiple CDN endpoints
• Automatic purging

Is that bad?

Not really. For most sites, basic CDN support is enough. It works with:

• Cloudflare
• BunnyCDN
• KeyCDN
• MaxCDN/StackPath
• Any CDN that supports URL rewriting

My advice:

Use Cloudflare (free) with WP Super Cache. Works perfectly, zero configuration drama.

Preload feature: automatically build cache

One of the handiest features: cache preloading.

What's the problem?

With normal caching it works like this:

1. Visitor comes to page
2. Cache miss (page not cached)
3. WordPress generates page (slow)
4. Cache is created
5. Next visitor gets cache (fast)

The first visitor is unlucky: slow load.

The solution: preload

WP Super Cache can crawl your entire site and generate cache in advance:

• 0 visitors needed
• All pages are already cached before first visit
• Everyone gets fast load time

How does it work?

1. Enable "Preload mode"
2. WP Super Cache reads your sitemap
3. Crawls all URLs
4. Generates cache for everything

Settings:

• Refresh time: how often cache refreshes (e.g. every 2880 minutes = 2x per day)
• Interval: time between requests (prevents server overload)

My setup:

I use preload on content sites:

• Refresh: 2x per day
• Interval: 200ms between requests

Works perfectly. All pages are always cached.

Note:

Preload can stress server if you have thousands of pages. Start with interval of 500ms and monitor server load.

Completely free: no pro version, no upsells

WP Super Cache has no paid version. Everything is free.

What you get:

• Page caching (3 modes)
• CDN support
• Preload functionality
• GZIP compression
• Cache rebuild scheduling
• Mobile device support
• Garbage collection
• REST API caching

What you DON'T get:

• Minification (CSS/JS/HTML)
• Lazy loading
• Database optimization
• Image optimization
• Object caching
• Advanced features

Is that bad?

Depends on your needs:

For small blogs: Perfect. You only need page caching.

For complex sites: Possibly insufficient. Consider WP Rocket or LiteSpeed Cache.

For WooCommerce: Basic caching works, but you miss optimizations.

The reality:

WP Super Cache does one thing (page caching) excellently. If you need more, combine it with:

• Autoptimize (free minification)
• Smush (free image optimization)
• WP-Optimize (database cleanup)

Or buy WP Rocket and get everything in one plugin.

Limitations: what WP Super Cache CAN'T do

Let's be honest about what's missing.

No minification

WP Super Cache doesn't reduce your CSS, JS or HTML.

Why is that important?

Minification saves 20-40% file size. Especially on sites with many plugins/themes that load bloated CSS/JS.

Solution:

Use Autoptimize (free plugin) alongside WP Super Cache. Combination works fine.

No lazy loading

Lazy loading (load images only when scrolling) is not included by default.

Impact:

Sites with many images load unnecessarily slow. A blog article with 30 photos loads all 30 immediately, even those at the bottom that nobody sees.

Solution:

• Use native WordPress lazy loading (built-in since WP 5.5)
• Or install a lazy load plugin (a3 Lazy Load, etc.)

No object caching

Object caching stores database queries in memory (Redis/Memcached).

Important for whom?

• WooCommerce sites (many queries)
• Membership sites
• Forums
• Complex custom post type setups

Solution:

WP Super Cache can combine with Redis Object Cache plugin. But then your setup becomes more complex.

No database optimization

No automatic cleanup of:

• Post revisions
• Spam comments
• Transients
• Database table optimization

Solution:

Use WP-Optimize (free) for database cleanup.

No image optimization

No WebP conversion, no compression, nothing.

Solution:

• Smush (free, max 50 images/month)
• ShortPixel (100/month free)
• Imagify (100/month free)

Bottom line:

WP Super Cache is laser-focused on page caching. Everything else you need to arrange yourself. For experts: fine. For beginners: maybe too many puzzle pieces.

Performance benchmarks: how fast is it?

I tested WP Super Cache on different WordPress setups.

Test 1: Simple blog (10 plugins, default theme)

Before WP Super Cache:

• PageSpeed score: 72/100
• Load time: 2.1 seconds
• TTFB: 420ms

After WP Super Cache (Expert mode):

• PageSpeed score: 88/100
• Load time: 0.8 seconds
• TTFB: 90ms

Improvement: 62% faster

Test 2: Blog with Elementor (22 plugins)

Before WP Super Cache:

• PageSpeed score: 58/100
• Load time: 3.6 seconds

After WP Super Cache + Autoptimize + lazy load:

• PageSpeed score: 84/100
• Load time: 1.4 seconds

Improvement: 61% faster

Test 3: WooCommerce shop (basic setup)

Before WP Super Cache:

• PageSpeed score: 61/100
• Load time: 3.2 seconds

After WP Super Cache:

• PageSpeed score: 76/100
• Load time: 1.8 seconds

Improvement: 44% faster

(Less improvement because WooCommerce has a lot of dynamic content that can't be cached)

Comparison with competition:

Same test site (blog with Elementor):

• WP Rocket: 91/100 score, 1.1s load
• LiteSpeed Cache: 93/100 score, 0.9s load (LiteSpeed server)
• W3 Total Cache: 88/100 score, 1.3s load
• WP Super Cache: 84/100 score, 1.4s load (with Autoptimize)

Conclusion:

WP Super Cache is not the fastest, but the difference is small (0.3s). For simple sites it's more than fast enough.

Pros and cons: the honest balance

Pros

Unmatched simplicity The easiest cache plugin, period. Even your grandma can install and configure it.

Made by Automattic Battle-tested on WordPress.com infrastructure. Can't be more reliable.

100% free No premium version, no upsells, no limitations.

Lightweight Minimal overhead. The plugin itself is fast and small.

Preload functionality Automatically build cache for all pages. Super handy.

Works everywhere Any hosting, any server setup. Apache, Nginx, doesn't matter.

No breaking changes Conservative updates. WP Super Cache rarely breaks anything.

Good documentation Clear docs and many tutorials online (because it's so popular).

Cons

Limited features Only page caching. No minification, lazy loading, database cleanup, etc.

Basic CDN support Works, but no advanced features.

No premium support Community support only. Can take days for answer.

Dated interface Functional but not pretty. Feels old-fashioned.

Less optimal for complex sites WooCommerce, membership sites, forums - need more.

No object caching For sites with many database queries a miss.

Setup can still go wrong "Expert mode" requires mod_rewrite. If that doesn't work, you get errors.

Manual cache clearing After updates you often have to manually clear cache.

Compatibility: hosting and plugins

Hosting compatibility

WP Super Cache works on virtually any hosting.

Perfect on:

• Shared hosting (Antagonist, TransIP, Vimexx, etc.)
• VPS servers
• Dedicated servers
• Cloud hosting
• Apache servers
• Nginx servers (with minor adjustments)

Watch out with:

• Managed WordPress hosting - check if cache plugins are allowed
• Servers without mod_rewrite - use Simple mode

Best hosting providers for WP Super Cache:

Netherlands:

• Antagonist
• TransIP
• Vimexx
• Byte

International:

• SiteGround
• Bluehost
• DreamHost

Plugin compatibility

Works well with:

• WooCommerce (basic setup)
• Contact Form 7
• Yoast SEO
• Jetpack
• Akismet
• Classic themes (Twenty Twenty, etc.)

Good combinations:

• WP Super Cache + Autoptimize (minification)
• WP Super Cache + Smush (image optimization)
• WP Super Cache + WP-Optimize (database)

Sometimes problems with:

• Page builders (Elementor, Divi) - test thoroughly
• Membership plugins - dynamic content can be cached
• E-commerce - cart/checkout must be excluded

Never combine with:

• Other cache plugins
• WP Rocket
• W3 Total Cache
• LiteSpeed Cache

Setup and configuration: for beginners

WP Super Cache is so simple that setup takes 5 minutes.

Step 1: Installation

1. WordPress > Plugins > Add New
2. Search "WP Super Cache"
3. Install and activate
4. Settings > WP Super Cache appears

Step 2: Basic configuration

Go to Settings > WP Super Cache > Easy tab:

1. ✅ Select "Caching On"
2. Click "Update Status"

Done. Your site is now faster.

Seriously, that's all that's needed.

Step 3: Advanced (optional)

Go to Advanced tab:

Caching:

• ✅ Enable caching
• ✅ Use mod_rewrite (Expert mode - fastest)
• ✅ Compress pages
• ✅ Don't cache pages for known users
• ✅ Cache rebuild

Step 4: Preload setup (optional)

Go to Preload tab:

1. ✅ Enable preload mode
2. Refresh time: 2880 minutes (2x per day)
3. Interval: 200 milliseconds
4. Click "Preload Cache Now"

Step 5: CDN setup (optional)

Go to CDN tab:

1. ✅ Enable CDN Support
2. Enter CDN URL (e.g. https://cdn.yourwebsite.com)
3. Save

Step 6: Test

1. Open your site in incognito mode
2. Check if everything still looks good
3. Run PageSpeed Insights
4. Check load time

Troubleshooting:

"Expert mode not working"?

Your server doesn't support mod_rewrite. Use Simple mode:

1. Advanced tab
2. Select "Simple" caching
3. Update

Cache not building?

Check permalink settings:

1. Settings > Permalinks
2. Must be something other than "Plain"
3. Save changes

Pages not updating?

Cache automatic refresh doesn't always work. Manual clearing:

1. WP Super Cache > Contents tab
2. Click "Delete Cache"

Perfect for beginners? Yes, with conditions

WP Super Cache is often recommended for beginners. Rightly so?

Yes, if you:

1. Have a simple blog

WordPress blog with default theme and few plugins? Perfect. WP Super Cache is all you need.

2. Don't want to gain technical knowledge

You want speed without learning about minification, object caching, ESI, etc. Fair. WP Super Cache is plug-and-play.

3. Budget is limited

€0 is always good. And for small blogs premium caching is overkill anyway.

4. Value simplicity over maximum speed

WP Super Cache is 0.2-0.4s slower than WP Rocket. If that's acceptable: great choice.

But not if you:

1. Run WooCommerce

WP Super Cache works, but you miss essential optimizations. WP Rocket or LiteSpeed Cache are better.

2. Want maximum performance

WP Super Cache is good, but not the fastest. For competitive niches where every 0.1s counts: upgrade.

3. Have complex site

Membership sites, forums, custom post types with complex queries - need more than basic page caching.

4. Want all-in-one solution

If you have to install Autoptimize, Smush, WP-Optimize anyway... why not WP Rocket for €59 that does everything?

Frequently asked questions

Is WP Super Cache really free?

Yes, 100%. No premium version, no hidden costs. Completely free, always.

WP Super Cache vs WP Rocket: which should I choose?

Budget €0? WP Super Cache. Budget €59/year? WP Rocket (easier, more features). Simple blog? WP Super Cache is sufficient. WooCommerce/complex? WP Rocket.

Does WP Super Cache work with WooCommerce?

Yes, but... It works, but you must exclude cart/checkout/account from caching. And you miss optimizations like object caching. For serious webshops: better options available.

Can WP Super Cache break my site?

Rarely. It's conservative and safe. In worst case: deactivate and site works again. Much safer than W3 Total Cache.

How often should I clear cache?

After:

• Theme updates
• Plugin updates
• Content changes (posts/pages)

Or use preload mode - then it refreshes automatically.

Can I combine WP Super Cache with Autoptimize?

Yes, excellent combination. WP Super Cache for caching, Autoptimize for minification. Works perfectly together.

Is WP Super Cache good enough for a business website?

Depends on your business:

• Simple portfolio/blog? Yes.
• WooCommerce with lots of traffic? Consider upgrade.
• Corporate site with basic info? Yes.
• Web app with complex functions? No.

Why is WP Super Cache free when WP Rocket costs €59?

Different business models. Automattic earns from WordPress.com hosting. WP Super Cache is marketing/goodwill. WP Rocket is their business.