Magento Platform
Open Source (CE)
2.0, 2.1, 2.2, 2.3

Tech Specifications

Current Version:
Stable Build
11 October, 2019
Extensions, Site Optimization, Performance
License Type:
Open Software License 3.0 (OSL-3.0)


Minify HTML including inline CSS and JS to speed up your site. Works with default Magento CSS/JS merger.

Other Extensions by Apptrian


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Minification is the process of removing all unnecessary characters  from source code without changing its functionality - e.g. code comments  and formatting, removing unused code, using shorter variable and  function names, and so on. After minification code is smaller in size  that means fewer bytes will be transmitted from your server to your  customer's web browsers which makes your site pages load faster. Beside  small speed increase search engines (especially Google) will give you a  plus in the SEO department (Search Engine Optimization). So you should  definitely Minify your code.

Apptrian Minify HTML CSS JS is a very small and efficient extension.  It will minify HTML code including inline CSS and JavaScript code.  Merging and Minification of CSS and JavaScript files is already a built-in feature of Magento 2 and newer, therefore, our extension does  not influence this functionality in any way. The extension is very easy  to install and use. Compatible with FPC and Varnish cache extensions. If  there is a serious error in some page code that page will not be  minified. The extension will log the error and URL of the page where  this error occurs so developers can track it down and fix the code.



  • An easy way to enable or disable HTML Minification.
  • Option to set Maximum HTML Minification.
  • Cache Compatibility Mode option for HTML minification.
  • Option to remove important comments or not.


This extension is FREE, however, support is NOT

Please understand that we get more than a few emails almost every day  asking for support. In most cases, problems are lack of basic Magento  knowledge and not reading Installation Instructions. Due to our other  projects, we do not have time to answer all of them. Because of this, we  cannot provide free support for our free extensions. However, we offer  very affordable support options for this extension on our site.



Q: Why after enabling minification my pages are all mangled up / have missing parts?
A: You probably have errors in your HTML/CSS/JS code. One stray tag is  enough to cause this behavior. Before you enable minification you must  have the error-free code. Turn minification off, use the W3C validator to find errors and fix them.

Q: Why are not all CSS/JS files merged and minified?
A: First of all external(off-site) CSS/JS files will not be merged and minified. For example:
Minifying…ork?v=0.0.2000-RC8.41700-1420&lang=en_US  could save 2KiB (5% reduction) after compression.
This happens if you use a Linkedin button, this file is on the Linkedin  server not on your server it is their responsibility to minify it, not  yours, your Magento installation nor our Minify extension.
Second,  all CSS/JS must be properly included in Magento via .xml file (for  example page.xml of your theme). Some extensions might hardcode link and  script tags into .phtml templates, these files will not be merged by  Magento default file merger (Magento does not know about them because  they are not properly included) and subsequently, will not minify them.

Q: Why Google PageSpeed Insights reports that CSS/JS files are not fully minified? (1)
A: Sometimes it is because gzip compression is turned off on your server. Use your .htaccess file to enable it.

<IfModule mod_deflate.c>
   # Compress text, html, javascript, css, xml:
   AddOutputFilterByType DEFLATE text/plain text/html text/xml text/css application/xml application/xhtml+xml application/rss+xml application/javascript application/x-javascript

Q: Why Google PageSpeed Insights reports that CSS/JS files are not fully minified? (2)
A: Sometimes Google PageSpeed Insights will report that CSS/JS files are not fully minified. For example:
Minifying…a/js/6a3cfa142fd20a7dc62423f1c15e4ad9.js could save 648B (1% reduction) after compression.
This is normal. Some of the CSS/JS files/libraries published by Google  also have this or similar complaints from Google PageSpeed Insights.
Minifying…/cb=gapi.loaded_0 could save 684B (2% reduction) after compression.
If Google itself cannot satisfy its own Google PageSpeed Insights testing tool, then what chance anyone else has. :-D
Rest assured your files are properly minified, by the tools recommended  by Google, so just ignore these types of complaints from Google  PageSpeed Insights.


A Word From the Author

Thank you very much for your interest in Minify HTML CSS JS  extension. You can rest assured that by choosing this extension you are  getting high-quality product despite the fact it is free. The same  professional approach, dedication, and care are invested in this product  as if it is paid one. If you find this product useful and want to say  "thanks" you can do that by rating it and writing a short review about  it on Magento Marketplace. Also, you can like, share and follow us on Facebook, Google+, Pinterest, and Twitter.

If you have any questions about extension or Magento in general feel free to contact us.

Release Notes

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  • Compatible with Open Source (CE) : 2.0 2.1 2.2 2.3
  • Stability: Stable Build
  • Description:

    * Compatibility with PHP v7.3


  • Compatible with Open Source (CE) : 2.0 2.1 2.2 2.3
  • Stability: Stable Build
  • Description:

    * Compatibility with PHP v7.2
    * Fixed options text in Magento admin config


  • Compatible with Open Source (CE) : 2.0 2.1 2.2
  • Stability: Stable Build
  • Description:

    * Compatibility with Magento 2.2


  • Compatible with Open Source (CE) : 2.0 2.1
  • Stability: Stable Build
  • Description:

    * Complete rewrite from the ground up
    + Support for Knockout JavaScript library comments
    + Support for script tags of type="text/x-magento-template"
    + Logging of errors with url where errors occur
    + Compliance with Magento's Extension Quality Program (EQP)
    * Small bug fixed


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The best place to start if you need help with a specific extension is to contact the developer. All Magento developers have both a contact email and a support email listed.

Q & A

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