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Alter Optimizer

Applies advanced module and content caching to speed-up website performance.

Special adjustments help to improve Core Web Vitals score and rank your site higher in Google.

The extension provides unique Joomla content and module caching techniques for faster page load. Additionally, it helps to improve page asset loading for faster page load and rendering.

Extension information


5.x maintained

4.x maintained

3.x not maintained

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See also:
AJAX Toggler
AJAX Toggler Pro

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  • Native Joomla component view caching for logged users (currently, Joomla doesn't apply native component view caching for logged users).
  • Native Joomla module caching for logged users (currently, Joomla doesn't apply native module caching for logged users).
  • Custom full module position caching (cache the output of module position in full).
  • Custom module page cache (cache the module output per page combining with module position caching).
  • Move JavaScripts to bottom of page code.
  • DNS and link prefetch.
  • Automatic link prefetch of Joomla article full image on article view.
  • Advanced plugin caching debug info.
  • Native Joomla cache debug info (applied to cache calls between plugin load and document render).
  • Automatic clearing of native Joomla system page cache on settings/item updates in backend.
  • No hacks of Joomla core files!
  • Free installation on request.


Want a new feature? Why not? Please Contact Us!

  • Joomla 4.3 or higher.
  • PHP 8.1 or higher.
  • Understanding of Joomla caching logic.
  • Joomla "Conservative" caching enabled in global configuration.
  • Sufficient disk space and allowed inodes for cache files (in case of file cache storage), sufficient resources for other cache storages.


18 Oct 2023 - ver. 2.1.0:

  • Feature: Joomla 5 compatibility.
  • Change: PHP 8.1 as min.

14 Jul 2023 - ver. 2.0.0:

  • Change: Joomla 3 support dropped.
  • Change: PHP 8.0 as min
  • Feature: new setting "Advanced > Debug Performance" helps to debug the page execution performance via a special custom header.

14 Oct 2021 - ver. 1.0.0