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 site was fast when it was small. Now archive pages, imports and wp-admin screens are waiting on the database. Scalability Pro adds the indexes WordPress leaves out, stops it counting rows nobody reads, and defers the work that turns an import into an overnight job.
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?
6.38.0 (30th October 2026)
- *Alter main query to use EXISTS rather than LEFT JOIN* leaves pages Super Speedy Filters serves from its own index to Super Speedy Filters, so they no longer carry an extra product visibility check.
6.37.11 (30th October 2026)
- Fixed database errors about missing `scalability_pro_post_count_cache` and `scalability_pro_transient_cache` tables after activating Scalability Pro with WP-CLI: activation creates the cache tables before anything uses them.
6.37.10 (29th October 2026)
- Updated super-speedy-settings to 1.14.3: update downloads now send the licence key in a request header instead of the download URL.
6.37.9 (29th October 2026)
- Fixed native WordPress search running slower with Scalability Pro's indexes installed on large stores: the `wpi_scalability_pro_sitemaps` index now leads with `post_type` and is rebuilt automatically after updating.
6.37.8 (29th October 2026)
- Reworded the *Alter main query to use EXISTS rather than LEFT JOIN* description: it changes how the SQL is written, never which products are shown.
Want faster results? Try Scalability Pro on your store.
Get Scalability Pro →
Comments