Debloat – Remove Unused CSS, Optimize JS


A plugin for Advanced Users to Optimize CSS Delivery, Remove Unused CSS, Optimize Javascript Delivery with defer or delay load JS.
The perfect toolkit for improving your Core Web Vitals and overall website performance.

WARNING: It’s a powerful speed optimization plugin that’s meant for power users who know what they’re doing.


  • Optimize CSS: Fix Render-Blocking.
  • Minify and Inline CSS.
  • Remove Unused CSS (Advanced).
  • Optimize JS: Fix Render-Blocking with defer.
  • Delay Load some JS until user interaction.
  • Adds resource hints for faster Google Fonts.
  • Built-in optimizations for Elementor (free version).
  • Built-in optimizations for WPBakery Page Builder.
  • Compatible with all themes and plugins.
  • Supports all modern browsers (no IE11 support).
  • Optimized code benchmarked for performance.
  • Built-in cache for processing.
  • Compatible with cache plugins (disable their JS and CSS optimizations).
  • API and hooks for theme & plugin authors.


  1. Upload/Install and activate the plugin.
  2. Go to Settings > Debloat Optimize, and configure per your requirement.
  3. Clear all caches from any cache plugin you may have active.


30 març 2022
It simply works. The GUI is very well made and everything is auto-explicative in a good English. As dev says, it's a tool for experienced users. I can't wait to see how it will evolve, but I guess it will compete with big ones soon or later. Tip for the dev: keep on improving Unused CSS and add Critical CSS, that's the key 😉
7 febrer 2022
It did something impossible with my website google page speed rank.
28 gener 2022
I've been looking for this for a long time. I finally met! You can remove unused CSS without using external services, and you can optimize Javascript and include InlineScript. It also has smart options for making the necessary adjustments. don't sit in the sidebar and don't have excessive PR. it is perfect! I hope this will be maintained for a long time.
8 gener 2022
I've been using Hummingbird for a while now and found, the bigger my blog got, the slower hummingbird was at doing the job. I tried loads of different plugins and none did exactly what I wanted it to do. this plugin, however, is brilliant. it does everything I need it to do. and even sorts critical CSS out for you without any hassle. it would be good though if the developer could update and incorporate his 'selfhost google fonts' plugin, or have some further google font options to detect and defer. other than that, its brilliant. credit to the plugin developer for the plugin, hopefully, he will continue to update and support it as it actually works better than Autoptimize.
5 desembre 2021
I found this plugin by mistake while searching for a plugin that would improve my site performance. At first I wasn't so sure it would work given the small number of installs compared to other performance plugins. I installed it and immediately my site loading speed visibly improved. Nomore unused css or renderblocking warnings. Thanks to the developer.
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Col·laboradors i desenvolupadors

"Debloat – Remove Unused CSS, Optimize JS" és programari de codi obert. La següent gent ha contribuït en aquesta extensió.


Registre de canvis


  • Fixed: A few minor PHP warnings / notices.
  • Improved: Elementor admin bar drop downs should render in delay JS.


  • Fixed: Error when malformed link tags with missing href.


  • Fixed: Google Fonts inline feature when additional parameters present in URL.
  • Improved: Strip unnecessary rel=stylesheet in inline styles.


  • Added: Option to defer inline scripts – useful if some dependent inline scripts not registered using WordPress enqueues.
  • Fixed: Defer inline scripts with jQuery if jquery-core is deferred.


  • Fixed: Delay/defer only replacing one instance with duplicated tags of the same URL and id.


  • Added: New filter debloat/should_process.
  • Improved: Skip converting already qualified URLs.
  • Bumped required PHP version to 7.1+.


  • Fixed: Some PHP notices under certain conditions.


  • Added: Maximum user interaction wait time for JS delay load feature.


  • Fixed: Disable processing in feeds and on missing HTML tag.


  • Fixed: Fatal error for Sabberworm lib and resolved/matched AMP plugin dependency.


  • Added: WP CLI Commands to empty caches.
  • Added: Google Fonts optimizations such as font-display: swap.
  • Added: Option to inline Google Fonts CSS.


  • Initial release.