[root@12 conf]# vi nginx.conf

        gzip on;#开启GZIP

        gzip_min_length  1k; #不压缩临界值，大于1K的才压缩，一般不用改

        gzip_buffers     4 16k;

        #gzip_http_version 1.0;

        gzip_comp_level 2;#压缩级别，1-10，数字越大压缩的越好，时间也越长

        #gzip_types       text/plain application/x-javascript text/css application/xml;

         gzip_types       text/plain application/x-javascript text/css application/xmli text/javascript application/x-httpd-php image/jpeg image/gif image/png;

        gzip_vary off;

        gzip_disable "MSIZE [1-6]\.";#IE6对Gzip不怎么友好，不给它Gzip

service nginx reload

[root@12 conf]# curl -I -H "Accept-Encoding:gzip,deflate" "http://xinxianm.com"

HTTP/1.1 200 OK

Server: nginx/1.4.4

Date: Tue, 31 May 2016 01:01:45 GMT

Content-Type: text/html; charset=utf-8

Connection: keep-alive

X-Powered-By: PHP/5.5.7

Set-Cookie: ECS_ID=650aa6ce6b78e9803c78923affc6a98ad5cf9bd2; path=/

Cache-control: private

Content-Encoding: gzip

[root@12 conf]# curl -I -H "Accept-Encoding:gzip,deflate" "http://xinxianm.com/images/upload/Image/1_05%2875%29.jpg"

HTTP/1.1 200 OK

Server: nginx/1.4.4

Date: Tue, 31 May 2016 01:02:46 GMT

Content-Type: image/jpeg

Last-Modified: Tue, 12 Apr 2016 07:24:20 GMT

Connection: keep-alive

Expires: Thu, 30 Jun 2016 01:02:46 GMT

Cache-Control: max-age=2592000

Content-Encoding: gzip