⚡ Performance in the Czech Republic

Website performance can be improved through a variety of technologies that optimize resource loading, defer non-essential content, minify HTML, CSS, and JavaScript code, and delay script execution.

The Czech Republic is a Central European country with a population of around 10.5 million people.

According to our data, performance technologies are used on 47.5% of websites from the Czech Republic.

⭐ Most Popular in 2026

The following chart shows the top performance technologies in the Czech Republic in 2026, based on market share.

The most popular is ⏳ Lazy loading with an impressive share of 52.1%, followed by DNS Prefetch with 45.4% and Preconnect with 42.4%.

⏳ Lazy loading 52.1%
DNS Prefetch 45.4%
Preconnect 42.4%
Preload 36.6%
Speculation Rules 13.7%
WP Fastest Cache 3.3%
Lazysizes 3.1%
Prefetch 2.3%
Autoptimize 2.1%
WP-Optimize 1.4%
jQuery LazyLoad 0.7%
Rocket Loader 0.7%
PageSpeed 0.5%
Turbolinks 0.4%
Vanilla LazyLoad 0.4%

🚀 Highlights

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

6. WP Fastest Cache ^(-4)
10. WP-Optimize ^(-1)
11. jQuery LazyLoad ^(-2)
14. Turbolinks ^(-5)
15. Vanilla LazyLoad ^(-3)
16. Hummingbird ^(-1)
17. Turbo ^(-3)
19. Lozad.js ^(-2)
20. Critters ^(-3)
21. Prerender ^(-1)

✨ Best Performance Technologies

Below is a more detailed list of the top 25 of the 29 performance technologies used on sites from the Czech Republic, 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.	52.1%
2	DNS Prefetch Cambridge, Massachusetts, United States The rel="dns-prefetch" attribute on HTML elements.	45.4%
3	Preconnect Cambridge, Massachusetts, United States The rel="preconnect" attribute on HTML elements.	42.4%
4	Preload Cambridge, Massachusetts, United States The rel="preload" attribute on HTML elements.	36.6%
5	Speculation Rules Mountain View, California, United States API is used to improve navigation performance by prefetching or even prerendering future navigations.	13.7%
6	WP Fastest Cache Ankara, Turkey A caching plugin that speeds up WordPress sites and improves the PageSpeed Insights score. FreeOpen source$49	3.3%
7	Lazysizes Berlin, Germany A fast lazy loader library for images, iframes, and scripts/widgets. FreeOpen source	3.1%
8	Prefetch Cambridge, Massachusetts, United States The rel="prefetch" attribute on HTML elements.	2.3%
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	2.1%
10	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	1.4%
11	jQuery LazyLoad A deprecated jQuery lazy loading plugin. FreeOpen sourceLegacy	0.7%
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	0.7%
13	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.	0.5%
14	Turbolinks Chicago, Illinois, United States A JavaScript library that allows web apps to behave like a single page application. FreeOpen sourceLegacy	0.4%
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	0.4%
16	Hummingbird Melbourne, Australia A WordPress optimization plugin with built-in caching and CDN integration. FreeOpen source$15+/month	0.3%
17	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	0.2%
18	Instant.Page Pau, France Uses just-in-time preloading - it preloads a page right before a user clicks on it. FreeOpen source	0.2%
19	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%
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	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	0.1%
23	Perfmatters Scottsdale, Arizona, United States A WordPress plugin designed for performance optimization. $29.95+/year	0.09%
24	Beasties Edinburgh, United Kingdom A plugin that inlines your app's critical CSS and lazy-loads the rest. FreeOpen source	0.05%
25	Partytown San Francisco, California, United States A lazy-loaded library to help relocate resource intensive scripts into a web worker, and off of the main thread. FreeOpen source	0.04%

👉 See Also

🌎 Performance in other countries

Data is based on the analysis of 36,165 websites from the Czech Republic.
Statistics were last calculated on March 20, 2026.
For details, see our methodology and disclaimer.