⚡ Performance Optimization in the United Kingdom

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

The United Kingdom of Great Britain and Northern Ireland (UK) is a Western European country with a population of over 67 million people.

According to our data, performance optimization technologies are used on 62.6% of websites from the United Kingdom.

Statistics based on 159K+ analyzed websites. About this data

⭐ Most Popular in 2026

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

The most popular is DNS Prefetch with an impressive share of 57.6%, followed by ⏳ Lazy loading with 55.4% and Preconnect with 41.4%.

DNS Prefetch 57.6%
⏳ Lazy loading 55.4%
Preconnect 41.4%
Preload 34.6%
Speculation Rules 30.6%
Lazysizes 5.4%
Rocket Loader 2.5%
Autoptimize 2.2%
Prefetch 1.9%
WP Fastest Cache 1.5%
WP-Optimize 0.9%
Instant.Page 0.8%
Hummingbird 0.6%
Perfmatters 0.6%
NitroPack 0.6%

🚀 Highlights

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

1. DNS Prefetch ^(-1)
7. Rocket Loader ^(-2)
12. Instant.Page ^(-2)
13. Hummingbird ^(-4)
14. Perfmatters ^(-1)
15. NitroPack ^(-1)
19. Lozad.js ^(-2)
22. WebMarkupMin ^(-6)

✨ Best Performance Optimization Technologies

Below is a more detailed list of the top 25 of the 34 performance optimization technologies used on sites from the United Kingdom, ranked by their market share.

Rank	Name	Market share
1	DNS Prefetch Cambridge, Massachusetts, United States The rel="dns-prefetch" attribute on HTML elements.	57.6%
2	⏳ 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%
3	Preconnect Cambridge, Massachusetts, United States The rel="preconnect" attribute on HTML elements.	41.4%
4	Preload Cambridge, Massachusetts, United States The rel="preload" attribute on HTML elements.	34.6%
5	Speculation Rules Mountain View, California, United States API is used to improve navigation performance by prefetching or even prerendering future navigations.	30.6%
6	Lazysizes Berlin, Germany A fast lazy loader library for images, iframes, and scripts/widgets. FreeOpen source	5.4%
7	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	2.5%
8	Autoptimize Lokeren, Belgium A WordPress plugin that aggregates, minifies and caches scripts and styles, and defers CSS and scripts. FreeOpen source$12.99/month	2.2%
9	Prefetch Cambridge, Massachusetts, United States The rel="prefetch" attribute on HTML elements.	1.9%
10	WP Fastest Cache Ankara, Turkey A caching plugin that speeds up WordPress sites and improves the PageSpeed Insights score. FreeOpen source$49	1.5%
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	0.9%
12	Instant.Page Pau, France Uses just-in-time preloading - it preloads a page right before a user clicks on it. FreeOpen source	0.8%
13	Hummingbird Melbourne, Australia A WordPress optimization plugin with built-in caching and CDN integration. FreeOpen source$15+/month	0.6%
14	Perfmatters Scottsdale, Arizona, United States A WordPress plugin designed for performance optimization. $29.95+/year	0.6%
15	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	0.6%
16	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%
17	jQuery LazyLoad A deprecated jQuery lazy loading plugin. FreeOpen sourceLegacy	0.4%
18	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	0.3%
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	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%
21	Turbolinks Chicago, Illinois, United States A JavaScript library that allows web apps to behave like a single page application. FreeOpen sourceLegacy	0.2%
22	WebMarkupMin Moscow, Russia A .NET library, also available as ASP.NET and ASP.NET Core extensions, that improves web application performance by reducing the size of HTML, XML, JS, and CSS code. FreeOpen source	0.1%
23	Prerender The rel="prerender" attribute on HTML elements.	0.1%
24	Performance Lab San Francisco, California, United States A WordPress plugin that allows you to test new performance features introduced by the official WordPress Performance Team. FreeOpen source	0.1%
25	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%

👉 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 159,418 websites from the United Kingdom.
We currently track the presence of 34 performance optimization technologies across the web.
Of these, 34 were detected on websites from the United Kingdom.
Statistics were last calculated on May 5, 2026.
For more details, see our methodology and disclaimer.