在 /etc/httpd/conf/httpd.conf 中添加如下配置：

# Enable gzip - by Jerryhuang  #  
      
             SetOutputFilter DEFLATE      SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png)$ no-gzip dont-vary      SetEnvIfNoCase Request_URI .(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary      SetEnvIfNoCase Request_URI .(?:pdf|mov|avi|mp3|mp4|rm)$ no-gzip dont-vary         AddOutputFilterByType DEFLATE text/*      AddOutputFilterByType DEFLATE application/ms* application/vnd* application/postscript application/javascript application/x-javascript      AddOutputFilterByType DEFLATE application/x-httpd-php application/x-httpd-fastphp      BrowserMatch ^Mozilla/4 gzip-only-text/html      BrowserMatch ^Mozilla/4.0[678] no-gzip      BrowserMatch \bMSIE !no-gzip !gzip-only-text/html  
      

参考网页：

检查网站是否已经开启压缩传输：