⚡ Performance in Japan

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.

Japan is an East Asian country with a population of around 125 million people.

According to our data, performance technologies are used on 52.9% of websites from Japan.

⭐ Most Popular in 2026

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

The most popular is DNS Prefetch with an impressive share of 56.8%, followed by ⏳ Lazy loading with 48.6% and Preconnect with 28.5%.

DNS Prefetch 56.8%
⏳ Lazy loading 48.6%
Preconnect 28.5%
Preload 20%
Speculation Rules 17.1%
Lazysizes 10.2%
Autoptimize 4.5%
PageSpeed 2.3%
WP Fastest Cache 2.2%
Prefetch 1.6%
jQuery LazyLoad 1.3%
Lozad.js 0.6%
WP-Optimize 0.4%
Rocket Loader 0.4%
Turbolinks 0.2%

🚀 Highlights

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

1. DNS Prefetch ^(-1)
8. PageSpeed ^(-4)
9. WP Fastest Cache ^(-1)
11. jQuery LazyLoad ^(-2)
12. Lozad.js ^(-9)
15. Turbolinks ^(-4)
17. Prerender ^(-5)
19. Quicklink ^(-7)
22. Performance Lab ^(-2)
23. Partytown ^(-4)

✨ Best Performance Technologies

Below is a more detailed list of the top 25 of the 31 performance technologies used on sites from Japan, ranked by their market share.

Rank	Name	Market share
1	DNS Prefetch Cambridge, Massachusetts, United States The rel="dns-prefetch" attribute on HTML elements.	56.8%
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.	48.6%
3	Preconnect Cambridge, Massachusetts, United States The rel="preconnect" attribute on HTML elements.	28.5%
4	Preload Cambridge, Massachusetts, United States The rel="preload" attribute on HTML elements.	20%
5	Speculation Rules Mountain View, California, United States API is used to improve navigation performance by prefetching or even prerendering future navigations.	17.1%
6	Lazysizes Berlin, Germany A fast lazy loader library for images, iframes, and scripts/widgets. FreeOpen source	10.2%
7	Autoptimize Lokeren, Belgium A WordPress plugin that aggregates, minifies and caches scripts and styles, and defers CSS and scripts. FreeOpen source$12.99/month	4.5%
8	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.	2.3%
9	WP Fastest Cache Ankara, Turkey A caching plugin that speeds up WordPress sites and improves the PageSpeed Insights score. FreeOpen source$49	2.2%
10	Prefetch Cambridge, Massachusetts, United States The rel="prefetch" attribute on HTML elements.	1.6%
11	jQuery LazyLoad A deprecated jQuery lazy loading plugin. FreeOpen sourceLegacy	1.3%
12	Lozad.js New Delhi, India Highly performant, light and configurable lazy loader for images and iframes in pure JS with no dependencies. FreeOpen source	0.6%
13	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	0.4%
14	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	0.4%
15	Turbolinks Chicago, Illinois, United States A JavaScript library that allows web apps to behave like a single page application. FreeOpen sourceLegacy	0.2%
16	Instant.Page Pau, France Uses just-in-time preloading - it preloads a page right before a user clicks on it. FreeOpen source	0.2%
17	Prerender The rel="prerender" attribute on HTML elements.	0.1%
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	0.1%
19	Quicklink Mountain View, California, United States Faster subsequent page-loads by prefetching or prerendering in-viewport links during idle time. FreeOpen source	0.1%
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	0.09%
21	Hummingbird Melbourne, Australia A WordPress optimization plugin with built-in caching and CDN integration. FreeOpen source$15+/month	0.06%
22	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	0.05%
23	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%
24	Perfmatters Scottsdale, Arizona, United States A WordPress plugin designed for performance optimization. $29.95+/year	0.03%
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	0.02%

👉 See Also

🌎 Performance in other countries
- China
- Korea
- Taiwan

Data is based on the analysis of 157,183 websites from Japan.
Statistics were last calculated on March 20, 2026.
For details, see our methodology and disclaimer.