In Linux systems, mod_deflate is used to compress HTTP content before it is served to the client; this results in faster network transfers.

Compressing Content

Apache 2.0, 2.2, and 2.4 allow you to compress content using mod_deflate before sending it to the visitor's browser. The types of content to be compressed are specified by MIME type. The mod_deflate module provides similar functionality as mod_gzip.

Mod_deflate is available on all our Linux based hosting packages, including Shared, Reseller, VPS, and Dedicated Server plans.

Note: These settings will be applied to your entire cPanel account.

You can enable or disable it in cPanel by doing the following:

  1. Log in to cPanel.
  2. In the Software section, click on Optimize Website.

    HostGator cPanel Optimize Website

  3. Under Compress Content, select the appropriate option:
    • To disable compression of your website’s content, select Disabled 
    • To compress all of your website’s content, select Compress All Content
    • To specify a list of types of content to compress, select Compress the specified MIME types. Enter a space-separated list of the types of content that you wish to compress in the MIME Types text box (for example, text/html text/plain text/xml).
      • Do not include any image file formats in the list. Image file formats (for example, .jpg and .png) already compress data. 
      • Apache will compress PHP content if you enable the zlib.output_compression setting in cPanel’s MultiPHP INI Editor interface.
      • For more information, view For more information, view Proper MIME Types

    HostGator cPanel Optimize Website Compress Content

  4. Click Update Settings.

Additional Information

To learn more about the mod_deflate module, read the documentation for your server’s version of Apache:

In addition, the following resource from GTmetrix is useful for understanding which rules to put in place:

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