SiteGround Optimizer vs Scalability Pro
Want faster results? Try Scalability Pro on your store.
Get Scalability Pro →Comparing SiteGround Optimizer with Scalability Pro? This page breaks down the key differences and similarities so you can find the best fit for your WordPress or WooCommerce store.
Overview of SiteGround Optimizer
SiteGround Optimizer is the official performance plugin for SiteGround-hosted WordPress sites. It provides static caching, image optimisation, CSS and JavaScript minification, and lazy loading, integrating with SiteGround's server-level caching infrastructure. It is designed specifically for sites on SiteGround and has limited utility on other hosts.
How Scalability Pro differs from SiteGround Optimizer
All plugins from Super Speedy Plugins share a SQL-first architecture and an uncompromising focus on performance — and Scalability Pro is no different. Here is what sets it apart:
Your WooCommerce shop page went from over 180 seconds to 0.4 seconds – on 820,000 products. Scalability Pro is the performance plugin for WordPress and WooCommerce sites that have grown too big for their own good. It adds the right database indexes, rewrites your slow queries to use them, and switches off the features that quietly grind to a halt once you pass 5,000 products, orders or users.
- Makes WP_Query fast and keeps it fast as your catalogue grows
- Speeds up archives, wp-admin, imports, exports and XML sitemaps
- Typically around a 10x boost on large imports, with lower CPU while they run
- A toolbox of optimisations you toggle on and off, no code required
- Complements your cache – it fixes the queries caching cannot
Rated 4.82 out of 5 by 34 customers. 60-day money-back guarantee.
SiteGround Optimizer is tightly coupled to SiteGround's hosting infrastructure and focuses on front-end asset caching. Scalability Pro is hosting-agnostic and works at the WordPress database level, eliminating the slow WooCommerce SQL queries that cause server-side slowdowns regardless of which host you use. If you have outgrown SiteGround or want database-level performance gains on any host, Scalability Pro addresses a fundamentally different part of the stack.
How to choose between SiteGround Optimizer and Scalability Pro?
SiteGround Optimizer is a solid choice for sites that live on SiteGround, but database-level bottlenecks caused by WooCommerce's query patterns are not solved by front-end caching alone. Scalability Pro targets those SQL bottlenecks directly, with a tested-against-one-million-products approach that works on any host. A free trial is available.
What do others say about Scalability Pro?
Recommend Scalability Pro if you have a lot of products and use wpallimport or wpallexport, improve import and export and also speed up your website.
Use it to speed up you WP All Import and Woocommerce shop!
Dave has made some tremendous products. Scalability pro is one of those. I didn’t think my project would work considering how many products I planned to have. Salability pro allowed me to upload 97,000 records. With Dave’s community and support I was able to make additional optimizations that helped me discover what was really required to boost the speed of my uploads and actually allow them to complete without failing. Check out his guides too for import speed, server configurations, and server optimizations. Now everything is fast. Excited for the future.
Scalability Pro Knowledge Base
View full Knowledge Base →Articles about Scalability Pro
View all articles →- New SQL enhancement for Scalability Pro to fix WooCommerce long-running query in the product-hero block
- Speeding up WooCommerce 7 (wp-admin and imports)
- More speed boosts for wp-admin and imports with Scalability Pro upgrade
- Performance boost for WooCommerce onboarding code on large sites
- December Development Update
- More speed, more updates, and a bit of a roadmap for our plugins
- Beta downloads and historic plugin versions now in your account
- Upgrades to multiple Super Speedy Plugins plugins now in beta
- Bridge theme speed improvements included in latest Scalability Pro update
- Faster Woo Widgets beta
- Speed hacks for the Newspaper theme by tagDiv: Transform your site speed
- Making the WPNotif plugin faster
- Speeding up WP All Import imports using Scalability Pro
- Performance Optimisation for various XML Sitemap plugins
- Getting Rehub Working with Super Speedy Plugins
- Rehub Theme Performance and Scalability Review
- Foundthru demo site of Super Speedy Plugins plugins
- Scaling WooCommerce to 1 million products (my talk at WordCamp Brighton)
What's new in Scalability Pro?
6.23 (20th May 2026)
- Added a "Recheck Licenses" button above the licence table on the Super Speedy Settings page so customers have a clear way to refresh licence status after a renewal or upgrade without scrolling down to the licence-key field. The button is disabled until a licence key is entered/saved and re-enables as you type.
- The Recheck flow now also force-bypasses the auth-server's own 1-hour licence cache (via a `force=1` flag on the `wpiapi/check_product_key` call), so renewals/upgrades that completed less than an hour before a recheck no longer show as expired/exceeded. Normal admin page loads continue to use both caches as before — only an explicit Recheck click bypasses them. (Lives in the `super-speedy-settings` submodule, so the change propagates to every Super Speedy plugin.)
6.22 (13th May 2026)
- Security: added capability checks and nonces to every admin AJAX endpoint that was previously reachable by low-privilege or unauthenticated users (slow query log fetch, index create/drop/drop-all, symlink create/delete, wp-config rewrite, slow query log truncate, term recount, profiling results save, cache clears, settings export/import, CSV export, action scheduler maintenance, and the WP All Import diagnostic helper)
- Security: removed `wp_ajax_nopriv_*` registrations from the slow query log fetch and the post-count / author-count cache clear endpoints — these were admin-only operations that should never have been exposed to unauthenticated visitors
- Security: escaped every column rendered in the Slow Query Log admin table (`time`, `url`, `query`, `stacktrace`, `duration`) — prevents stored XSS via a poisoned slow-query log entry being executed when an admin views the tab
- Security: fixed the "Create symlink" button, which previously created a dangling `wp-content/db.php` (the source path the button used had never existed in the plugin) and would have fatal-ed the site on the next request; the slow-query drop-in (`db.php` + `profiling-queries.php`) has been moved into `tabs/slow-query-log/wp-content/` to match the path the button always expected, every readlink check across the tab now derives the path from `plugin_dir_path(__FILE__)` so it works regardless of the plugin's installed folder name, and the symlink source is validated with `is_file()`/`realpath()` before linking
- Refactored: the slow-query-log drop-in files now live under `tabs/slow-query-log/wp-content/` so the tab is self-contained ahead of the planned split of each tab into a separate add-on plugin
- Security: hardened `spro_search_terms` (product attribute search) — requires `edit_products` and null-checks the taxonomy so PHP 8 no longer fatals on an unknown taxonomy
Want faster results? Try Scalability Pro on your store.
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