⚡ Performance Optimization in Slovakia

Performance optimization technologies allow websites to load faster and respond more efficiently by improving how content and resources are handled and displayed to users.

Slovakia is a Central European country with a population of around 5.4 million people.

According to our data, performance optimization technologies are used on 53.6% of websites from Slovakia.

Statistics based on 10K+ analyzed websites. About this data

⭐ Most Popular in 2026

The following chart shows the top performance optimization technologies on websites in Slovakia in 2026, based on market share.

The most popular is ⏳ Lazy loading with an impressive share of 55.4%, followed by DNS Prefetch with 49.2% and Preload with 39.1%.

⏳ Lazy loading 55.4%
DNS Prefetch 49.2%
Preload 39.1%
Preconnect 38.7%
Speculation Rules 17.7%
Lazysizes 3.8%
WP Fastest Cache 3.1%
Prefetch 2.6%
Autoptimize 1.9%
jQuery LazyLoad 1.3%
WP-Optimize 1.1%
Rocket Loader 0.8%
Turbo 0.7%
PageSpeed 0.6%
Vanilla LazyLoad 0.5%

🚀 Highlights

Here is a list of the top technologies that are more popular in Slovakia than worldwide.
Differences between global and country rankings are shown in parentheses.

3. Preload ^(-1)
7. WP Fastest Cache ^(-3)
10. jQuery LazyLoad ^(-3)
13. Turbo ^(-6)
15. Vanilla LazyLoad ^(-3)
16. Turbolinks ^(-4)
17. Lozad.js ^(-4)
20. Critters ^(-3)
21. Prerender ^(-1)
22. Beasties ^(-3)

✨ Best Performance Optimization Technologies

Below is a more detailed list of the top 25 of the 29 performance optimization technologies used on sites from Slovakia, ranked by their market share.

Rank	Name	Market share
1	⏳ Lazy loading Cambridge, Massachusetts, United States A technique to load non-critical images and iframes marked with the loading="lazy" attribute only when needed.	55.4%
2	DNS Prefetch Cambridge, Massachusetts, United States The rel="dns-prefetch" attribute on HTML elements.	49.2%
3	Preload Cambridge, Massachusetts, United States The rel="preload" attribute on HTML elements.	39.1%
4	Preconnect Cambridge, Massachusetts, United States The rel="preconnect" attribute on HTML elements.	38.7%
5	Speculation Rules Mountain View, California, United States API is used to improve navigation performance by prefetching or even prerendering future navigations.	17.7%
6	Lazysizes Berlin, Germany A fast lazy loader library for images, iframes, and scripts/widgets. FreeOpen source	3.8%
7	WP Fastest Cache Ankara, Turkey A caching plugin that speeds up WordPress sites and improves the PageSpeed Insights score. FreeOpen source$49	3.1%
8	Prefetch Cambridge, Massachusetts, United States The rel="prefetch" attribute on HTML elements.	2.6%
9	Autoptimize Lokeren, Belgium A WordPress plugin that aggregates, minifies and caches scripts and styles, and defers CSS and scripts. FreeOpen source$12.99/month	1.9%
10	jQuery LazyLoad A deprecated jQuery lazy loading plugin. FreeOpen sourceLegacy	1.3%
11	WP-Optimize Newport, Wales, United Kingdom An all-in-one WordPress plugin that cleans your database, compresses your images, and minifies and caches your website. FreeOpen source$49/year	1.1%
12	Rocket Loader San Francisco, California, United States CloudFlare Rocket Loader prioritizes website content by delaying loading of all JavaScript until after rendering. Free$25+/month	0.8%
13	Turbo Chicago, Illinois, United States A lightweight JavaScript library that provides the speed and feel of a single-page application without requiring developers to write any JavaScript. FreeOpen source	0.7%
14	PageSpeed Mountain View, California, United States An open-source web server module for rewriting web pages to reduce latency and bandwidth, available for Apache and Nginx.	0.6%
15	Vanilla LazyLoad A lightweight and flexible script that speeds up your web application by delaying the loading of your below-the-fold images, videos and iframes until they enter the viewport. FreeOpen source	0.5%
16	Turbolinks Chicago, Illinois, United States A JavaScript library that allows web apps to behave like a single page application. FreeOpen sourceLegacy	0.3%
17	Lozad.js New Delhi, India Highly performant, light and configurable lazy loader for images and iframes in pure JS with no dependencies. FreeOpen source	0.2%
18	NitroPack Sofia, Bulgaria A performance optimization solution for WordPress, WooCommerce, Magento, and OpenCart that offers caching, code, image, and font optimization, and a built-in CDN. $17.50+/month	0.2%
19	Instant.Page Pau, France Uses just-in-time preloading - it preloads a page right before a user clicks on it. FreeOpen source	0.2%
20	Critters San Francisco, California, United States A deprecated Webpack plugin that inlines your app's critical CSS and lazily loads the rest. FreeOpen sourceLegacy	0.1%
21	Prerender The rel="prerender" attribute on HTML elements.	0.1%
22	Beasties Edinburgh, United Kingdom A plugin that inlines your app's critical CSS and lazy-loads the rest. FreeOpen source	0.1%
23	Perfmatters Scottsdale, Arizona, United States A WordPress plugin designed for performance optimization. $29.95+/year	0.09%
24	Hummingbird Melbourne, Australia A WordPress optimization plugin with built-in caching and CDN integration. FreeOpen source$15+/month	0.09%
⏳	Flying Pages Middletown, Delaware, United States A WordPress performance plugin that preloads pages in the browser before navigation to deliver near-instant page transitions. FreeOpen source	0.06%

👉 See Also

🌎 Performance Optimization in other countries

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 10,030 websites from Slovakia.
We currently track the presence of 34 performance optimization technologies across the web.
Of these, 29 were detected on websites from Slovakia.
Statistics were last calculated on May 5, 2026.
For more details, see our methodology and disclaimer.