JSpeed is the Joomla plugin that optimizes and speeds up your website for Google PageSpeed and Core Web Vitals — minification, image optimization, WebP/AVIF conversion, lazy-loading and the exclusive Adaptive Contents technology, often doubling your PageSpeed score.
Slow site?
Not anymore.
JSpeed is the Joomla plugin that optimizes and speeds up your website for Google PageSpeed — often doubling your score, automatically.
PageSpeed score: 52 → 97
From slow to fast, automatically
No manual tuning, no guesswork. JSpeed finds the optimal setup and applies it for you.
Auto-configure
JSpeed finds the optimal configuration automatically, with the Google PageSpeed test built in.
Optimize everything
Scripts, CSS, HTML and images get minified, combined, deferred and converted to next-gen formats.
Watch your score climb
Often up to double your Google PageSpeed score — without losing website functionality.
Still shipping unoptimized assets?
A typical Joomla site ships scripts, CSS and images exactly as uploaded — full size, unminified, blocking the initial render. JSpeed was built to end that.
- Unminified scripts, CSS and HTML shipped as-is
- Large PNG/JPG images at full size, no next-gen formats
- No lazy-loading — everything blocks the initial render
- Manual, trial-and-error htaccess and caching tweaks
- Auto-minifies and combines scripts, CSS and HTML
- Converts images to WebP/AVIF with automatic srcset
- Lazy-loads images, iframes and heavy HTML elements
- Auto-configuration finds your optimal setup, tested against PageSpeed
Optimizations at every layer
From the first byte to the last image, JSpeed touches every part of the page that affects your score.
Minification
Scripts, CSS and HTML reduced in size to save bandwidth.
Combine Assets
JS, CSS and images combined into single files to cut HTTP request overhead.
Lazy-load
Images, iframes and heavy elements load only when the visitor scrolls to them.
Defer & Preload
CSS, JS and web fonts loaded in defer, async or preload mode.
Image Optimization
Large images rescaled and losslessly compressed, on the fly.
WebP & AVIF
Images converted in real time to next-generation formats.
CDN Support
Asset links automatically rewritten to point to your CDN domain.
Htaccess & HTTP/2
Browser caching and server push optimizations applied automatically.
Built for speed. Backed by data.
Adaptive Contents™
This unique technology generates a lightweight version of your website to dramatically raise the PageSpeed score, without losing website functionality. The most powerful Joomla performance plugin on the market.
Instant Page Technology™
Just-in-time preloading — the next page starts loading right before a user clicks on it.
Speculative Loading API
Dynamically prefetches or prerenders URLs and assets before a visitor navigates to them.
Srcset Generation
Automatically creates an image srcset with up to 4 differently-sized images per resolution.
Background Image Optimization
Optimizes images set as backgrounds through HTML and CSS styles too.
Combine Images
Generate a single container image for multiple CSS backgrounds.
Assets Removal
Remove unnecessary CSS, JS and font files to avoid loading resources you don't need.
Above-the-Fold CSS
Extracts and inlines critical CSS to render the visible page instantly.
Total Cache Usage
Intensive caching for every kind of asset, so return visits load instantly.
Exclusions System
A powerful exclusions system fixes conflicts caused by minification, in a few clicks.
Integrated PageSpeed Test
Run the Google PageSpeed test directly from the Joomla backend.
HTTP/2 Support
Works with HTTP/2 compatible servers to leverage browser preloading.
It supports CDN rewriting, HTTP/2, htaccess optimization and a powerful exclusions system to fix any conflict in a few clicks. JSpeed, from the esteemed JExtensions Store, is the perfect solution for making Google — and your visitors — happy.