I would like to minify a js file of a Joomla module. For example, the file:


which has been copied to following location:


It's been minified. I reloaded my site, and there was no change. The site is still using the un-minified js file. What am I missing?

3 Answers 3


Assuming the module is using the following method to import the script:

JHtml::_('script', 'path/to/file.js', array(), true);

Not using $doc->script()

Then you need to copy the file to the following path:


The path shouldn't have tmpl/js/ in it.


If it's your own custom module - go with another answer solution, but if it's not yours - I suggest you to go with JCH Optimizer - free version fully covers your needs.

  • JCH Optimize is for caching, not overriding JS files
    – Lodder
    May 23, 2016 at 9:18
  • 1
    JCH Optimize is for caching, minifying and compiling to 1 file all CSS and all JS to another. This man wants to minify js - so it's his option, believe me. Used it at least 20 times already.
    – Alexandr
    May 23, 2016 at 9:22
  • 2
    @Alexandr: I would suggest to complete your answer by adding this type of comment in your answer - explaining why you suggest JCH optimize and what can be achieved by using it.
    – FFrewin
    Jun 22, 2016 at 9:28

You can also do this by including Javascript file in footer so that it will overwrite the file.

  1. Create a new file called footer.php in /libraries/joomla/document/html/renderer/ directory:

  2. In /libraries/joomla/document/document.php add after

    public $_scripts = array();
    public $_footer_scripts = array();

  3. Add method addFooterScript() after the addScript() method

    function addFooterScript($url, $type = "text/javascript", $defer = false, $async = false) {
        $this->_footer_scripts[$url]['mime'] = $type;
        $this->_footer_scripts[$url]['defer'] = $defer;
        $this->_footer_scripts[$url]['async'] = $async;
        return $this;
  4. In index.php in you template folder add just before the tag
    <jdoc:include type="footer" />

  5. Done!
    Now in layouts inside your template's folder you can use the following code to add javascript files to footer:

    $doc =& JFactory::getDocument();

For more instructions check this - Javascript files includes in footer

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