How to enable GZIP compression in Apache?

Created:

2017-01-20 04:49:52 UTC

Modified:

2017-08-14 05:36:57 UTC

7

Was this article helpful?


Have more questions?

Submit a request

How to enable GZIP compression in Apache?

Question

How to enable GZIP compression in Apache?

Answer

  1. Make sure that module mod_deflate is enabled in apache:
    # httpd -M | grep deflate
    deflate_module (shared)
  2. Create a file deflate.conf in /etc/httpd/conf.d:
    # vi /etc/httpd/conf.d/deflate.conf
  3. Add the following into the file:

    <IfModule mod_deflate.c> 
    # Compress HTML, CSS, JavaScript, Text, XML and fonts AddOutputFilterByType DEFLATE application/javascript
    AddOutputFilterByType DEFLATE application/rss+xml
    AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
    AddOutputFilterByType DEFLATE application/x-font
    AddOutputFilterByType DEFLATE application/x-font-opentype
    AddOutputFilterByType DEFLATE application/x-font-otf
    AddOutputFilterByType DEFLATE application/x-font-truetype
    AddOutputFilterByType DEFLATE application/x-font-ttf
    AddOutputFilterByType DEFLATE application/x-javascript
    AddOutputFilterByType DEFLATE application/xhtml+xml
    AddOutputFilterByType DEFLATE application/xml
    AddOutputFilterByType DEFLATE font/opentype
    AddOutputFilterByType DEFLATE font/otf
    AddOutputFilterByType DEFLATE font/ttf
    AddOutputFilterByType DEFLATE image/svg+xml
    AddOutputFilterByType DEFLATE image/x-icon
    AddOutputFilterByType DEFLATE text/css
    AddOutputFilterByType DEFLATE text/html
    AddOutputFilterByType DEFLATE text/javascript
    AddOutputFilterByType DEFLATE text/plain
    AddOutputFilterByType DEFLATE text/xml
    # Remove browser bugs (only needed for really old browsers)
    BrowserMatch ^Mozilla/4 gzip-only-text/html BrowserMatch ^Mozilla/4.0[678] no-gzip BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
    Header append Vary User-Agent
    </IfModule>
  4. Restart apache:

    # systemctl restart httpd
    
Note: In Debian and Ubuntu the service is named apache2 instead of httpd, the list of all modules is called using apache2ctl utility and the path for deflate.conf file is /etc/apache2/mods-available/ instead of /etc/httpd/conf.d/
Have more questions? Submit a request
Please sign in to leave a comment.