Joomla Website Optimizer Plugin

Make your website blazing fast.

It includes a new Css parser
Automatic critical path css generation which will bring you close to 100 in lighthouse test with no effort

Here are some features provided by this plugin

HTML

HTML minification
preserve IE conditional comments

Javascript

merge files
minify files
remove files based on a pattern
async loading
move javascript to the bottom of the page

CSS

merge files
minify files
remove files based on a pattern
async loading
web fonts preloading
automatic critical css generation

Images

automatically resize images
convert to avif and webp
generate responsive images
generate preview images
lazyloading images
generate responsive css background images

Performance

automatic critical css path generation
configurable HTTP caching headers
optimizations are enforced when the client sends Save-Data HTTP header
dns prefetch
profile plugin performance using HTTP server timing headers
precompressed cached files using brotli or gzip.

Service Worker

enable service worker
offline first support
background sync
web share target level 2
web push notifications using One Signal
immediately update the service worker when the manifest settings change

Content Security Policy (CSP)

Configure almost every csp level 3 settings to your liking:

disable inline scripts and css
block css, js, workers, frames, etc.
allow css and js from specific origin only
dynamic csp rules generation from the page content

Security

Sub Resource Integrity
HSTS header configuration
XSS-PROTECTION header configuration
X-Frames-Options configuration

Hotlink Protection

configure file type that use hotlink protection
configure link lifetime

The complete list of features is available in the online documentation and the change log