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Editorial Team
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Asked: 2026-05-22T00:29:28+00:00

Hey guys, After running Google Page Speed, my Compression Results were red. Google Page

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Hey guys,
After running Google Page Speed, my Compression Results were red. Google Page Speed said almost all my files — JS, CSS, etc. — should be compressed with gzip.

I added the following line to my .htaccess file.

<IfModule mod_deflate.c>
AddOutputFilterByType DEFLATE text/html text/css text/plain text/javascript text/xml application/xhtml+xml application/x-httpd-php
</IfModule>

Now the Compression Results look slighly better – yellow! However Page Speed keeps saying that I should compress all my JavaScript libs and plugins. I could reduce them by 65% with gzip.

Shouldn’t all my JS files be compressed now when I have text/javascript set as DEFLATE?

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1 Answer

  1. Editorial Team

    Apache also uses mime type application/x-javascript, this howto explains how to set it.

    Basically it says you need to use:

    <Location />
    AddOutputFilterByType DEFLATE application/x-javascript
</Location>

    On a side note, you might also consider using a minifier/compressor like the YUI compressor or a specific compressor that integrates with your software.

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