gzip compression not fully working on css and js files

  • Hi,
    I’m using the latest versions of wordpress, bbpress and the plugins.

    I have the standard lines in my .htaccess (removed some of them before pasting here):

    AddOutputFilterByType DEFLATE application/javascript
  AddOutputFilterByType DEFLATE application/rss+xml
  AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
  AddOutputFilterByType DEFLATE application/xhtml+xml
  <...>
  AddOutputFilterByType DEFLATE text/css
  AddOutputFilterByType DEFLATE text/javascript
  AddOutputFilterByType DEFLATE text/html
  <...>
  AddType x-font/otf .otf
  AddType x-font/ttf .ttf

    By adding the above in Apache and running https://checkgzipcompression.com/ it tells me that I’m blessed and that my webserver is nginx

    But running https://gtmetrix.com it complains that most of my css and js are not compressed !

    Compressing https://www.example.com/wp-content/plugins/sitepress-multilingual-cms/res/css/language-selector.css?v=3.2.7 could save 4.7KiB (78% reduction).
Compressing https://www.example.com/wp-content/plugins/ajax-event-calendar/css/jquery-ui-1.8.16.custom.css?ver=1.8.16 could save 18.9KiB (83% reduction).
<...>

    Any ideas on how to tune .htaccess ? Does it have to do with the ?ver that is added to the css ?

    Thanks,
    Pascal.

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