Spark Speed · Caching & optimization
The WordPress cache plugin that checks itself.
The caching and optimization plugin that checks every change on your pages before applying it. Fully reversible and completely on your own server.
100% PHP, own server
Runs on shared hosting
1-click reversible
Cache
~10ms response
Verified
Every change
Instant
Pre-rendered
Secure
Fails safe
Rollback
1-click rollback
Own server
100% PHP
Cache in one click
AI Hyper Optimize via MCP
Preset for your hosting
Built for Breakdance
My site
Spark
Howdy, admin
Dashboard
Pages
Breakdance
Spark Speed
Overview
Cache
Optimization
Diagnostics
Settings
WooCommerce
Settings
Spark Speed v0.73
Caching and optimization for fast WordPress sites
Clear cache
Active
Warm cache
Overview
Optimization
Settings
Cache
Diagnostics
Spark Speed is serving your cache
Cached HTML straight from disk, before PHP.
Page cache
Active
All pages ready
Object cache
Redis
Connected, with TTL and garbage collection
Optimization
Active
Profile: breakdance, woocommerce
Cache build
Pages are built in the background
ready
queued
total
Performance
Lighthouse, measured on your own pages
Mobile
Verified after every change
Smart optimization
6 recommendation(s) ready to review.
AI
Apply
Discard
Connect Claude or ChatGPT (MCP)
Let Claude or ChatGPT measure and optimize your site with your own AI subscription: measuring, changing settings, undoing changes and purging the cache.
https://yoursite.com/wp-json/spark-speed/v1/mcp
Every change is in the timeline and can be undone.
Timeline
Defer JavaScript
Undo
Used CSS for product pages
Undo
Preset
Detected on activation. You do not have to configure anything.
Automatic
Web server
LiteSpeed
CPU cores
4, two parallel workers
Object cache
Redis available
Page builder
Breakdance
Shop
WooCommerce
Forms
Fluent Forms
Blueprint applied: breakdance, woocommerce
Exclusions for menus, cart and checkout are set for your stack.
Latest activity
Header template saved in Breakdance
just now
Cache purged for every page that uses it
just now
Pages warmed again
just now
Templates and global blocks
Headers, footers, templates, global blocks and popups purge every page that uses them.
Menus keep working
Mobile menu, dropdowns, sliders and accordions are never delayed or stripped.
Breakdance preset
Kept and never delayed on your Breakdance site:
mobile menudropdownsoff-canvasslidersaccordionsheader builder
Pages cached
48 / 48
Largest Contentful Paint
0.9 s
Good, measured on mobile
Claude
Optimize the speed of my site with Spark Speed.
get_site_overview
check_page
apply_config
Done. I applied 6 changes and checked every page afterwards. You can undo each change in the timeline.
Your own AI
Claude
or ChatGPT, with your own subscription
Set up
0 clicks
Applied on activation
LiteSpeed server
Page cache is left to LiteSpeed, Spark Speed adds the optimizations. No double caching.
Breakdance
Header
Save
Purged and warmed
48 pages
Automatically, after one save
Spark Speed proves it per page, instead of letting you hope everything works out. The approach is always the same:
measure, apply, and then verify everything still works. Page by page.
What makes Spark Speed unique
Four things that together show how Spark Speed tackles optimization.
Self-checking
Every risky optimization is tested on a live shadow-render of your own page before it stays. If something breaks, it's automatically not applied.
AI does the fine-tuning
Know exactly which scripts can wait and which CSS can go without breaking the site. Claude generates a precise, safe configuration, tailored specifically for your site.
Always fails safely
Designed to fail safe: if a component errors or is offline, Spark serves the unoptimized page instead of a broken one.
Privacy-first, on your own server
Caching and optimization happen on your own server. No external service sees your HTML or images. No Node, no Chromium.
Core feature 1
1-click optimization with visual regression testing
One button. Spark Speed measures your site, applies safe optimizations, and then checks every risky optimization on an actual render of your key page types: home, shop, product, page and post.
Functional flows
Menus, sliders, accordions, add-to-cart, forms, facets, popups, cookie banner and analytics keep working.
Layout
No elements that shift or disappear. The page remains exactly as it looked before.
Visual regression
A detailed comparison per element (background, text color, font, border), so that a removed style rule that changes a color is also noticed.
Only what demonstrably breaks nothing remains. The rest is automatically skipped, with a clear reason in the log. And everything can be completely reverted with one click.
Core Feature 2
AI hyper-optimization
The biggest speed gains come from precise tuning per site: which scripts to defer, which to exclude, which unused CSS to remove. Spark Speed lets AI do that work, with a switchable engine.
No API costs
Claude skill (default)
Export your diagnosis, run the skill in your own Claude subscription, import the generated configuration. No extra credits needed.
Your own key
Claude API (optional)
Enter your key, click Generate with AI, and the plugin fetches the configuration automatically. Choose your model, from maximum accuracy to lowest cost.
Whatever the AI suggests still goes through the same 1-click verification afterward. The AI expands optimization, the self-test keeps it safe. You get AI sharpness without the risk.
What Spark Speed delivers for you
Tested per page, fully reversible, and everything runs on your own server.
FeatureSpark SpeedWhy it matters
Every optimization verifiedTested per pageNo blind assumptions, every change verified
Visual regression testingColor, font and layoutYou see instantly what changes
AI fine-tuningCustomized per sitePrecise configuration without manual work
Auto-rollbackPer individual URLNever all-or-nothing disable
Instant navigationPre-renderedThe next page feels instant
On your own serverEverything on your serverNo external optimization service
Self-host Google FontsNo request to GoogleWorks even if Google is slow
Object cacheRedis, Memcached, SQLiteFaster admin, cart and checkout
Fails safeKill switch built-inFalls back to the original
What you get immediately
Upon activation, without further steps.
Page cache
HTML is served before WordPress, in the order of tens of milliseconds.
Instant navigation
The next page is already pre-rendered on hover, with fallback for Safari and Firefox.
Combine CSS
All own stylesheets merged and inlined, with a guard that skips corrupted CSS.
Self-host Google Fonts
Locally served, no request to Google, and loads even when Google is slow.
JS defer and delay
Smart exclusions so page builders keep working.
Lazy-load plus dimensions
Stable layout without shifting (CLS).
LCP-preload and preconnect
The critical image source loads first, font-display on swap.
Bloat-removal
Remove emoji, jQuery Migrate and wp-embed.
Object cache
Redis, Memcached, APCu or SQLite for faster admin, cart and checkout.
Auto-blueprint
Detects your stack and automatically sets the right exclusions and keep-selectors.
Reliability as foundation
Speed should never come at the cost of stability. Four guardrails make sure it doesn't.
Auto-rollback
If an optimized page reports an actual render issue, Spark automatically disables optimization for that single URL.
Conflict-detection
Never unilaterally takes over another plugin's cache.
Fail-open
On a problem, Spark falls back to the unoptimized page.
Safe mode
A kill switch that only caches and optimizes nothing else.
One plugin, every site
Annually or monthly, per number of sites up to unlimited. You can cancel anytime.
Frequently asked questions about Spark Speed
Quick answers about hosting, WooCommerce, page builders and your licence. Can't find your question? Get in touch.
On Apache, LiteSpeed and nginx. On Apache and LiteSpeed the server serves cached pages without PHP; on nginx the PHP drop-in does. Requires PHP 7.4 or higher and WordPress 6.0 or higher. Shared hosting is fine: sparkcore.io itself runs on Hostinger.
Yes. A page rendered for a visitor with items in the cart never enters the shared cache, and stock or price changes refresh exactly the right pages. Cart and customer caching are opt-in and are tested on your own shop first.
Spark Speed detects Breakdance, Elementor, Divi, Oxygen and more than ten other plugins on activation and prepares the right exclusions. Breakdance templates, headers, footers and global blocks are refreshed automatically on save; for Elementor that happens on a CSS regeneration or kit save.
Partly. You configure each subsite separately, the object cache works per site, and on multisite the PHP drop-in serves instead of the fast Apache path. There is no network-wide admin screen yet.
You get a 14-day grace period first. After that the existing cache keeps serving and edits keep refreshing pages, but no new pages are optimized and the admin screens lock until you renew. Your site keeps working, just without new optimizations.
Yes. Spark Speed recognises WP Rocket and FlyingPress options, even after uninstalling, and prepares your exclusions as a preview. Nothing is switched on without your approval.
Every licence comes with a 14-day money-back guarantee. Email hello@sparkcore.io and you get your money back.
Ready for Monday morning
Enable speed without the worry.
Spark Speed proves page by page that it's safe, instead of leaving you to figure it out. Your shop won't break on Monday morning.