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