環境：CentOS7.x 

1、開啟Nginx配置檔案

vi /etc/nginx/nginx.conf

或者 vi /etc/nginx/conf.d/gzip.conf

兩種方法取一種即可。

如果原來的系統已有/etc/nginx/conf.d/gzip.conf，則必須修改該檔案，加入下面的資訊。

2、往nginx.conf或者gzip.conf檔案中加入如下資訊，但是不能兩個都加，會報錯的！

gzip on;
gzip_min_length 1k;
gzip_buffers 4 16k;
#gzip_http_version 1.0;
gzip_comp_level 2;
gzip_types text/plain application/javascript application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png;
gzip_vary off;
gzip_disable "MSIE [1-6]\.";
 

3、解釋一下

第1行：開啟Gzip

第2行：不壓縮臨界值，大於1K的才壓縮，一般不用改

第3行：buffer，就是，嗯，算了不解釋了，不用改

第4行：用了反向代理的話，末端通訊是HTTP/1.0，有需求的應該也不用看我這科普文了；有這句的話註釋了就行了，預設是HTTP/1.1

第5行：壓縮級別，1-10，數字越大壓縮的越好，時間也越長，看心情隨便改吧

第6行：進行壓縮的檔案型別，缺啥補啥就行了，JavaScript有兩種寫法，最好都寫上吧，總有人抱怨js檔案沒有壓縮，其實多寫一種格式application/javascript 就行了

第7行：跟Squid等快取服務有關，on的話會在Header裡增加"Vary: Accept-Encoding"，我不需要這玩意，自己對照情況看著辦吧

第8行：IE6對Gzip不怎麼友好，不給它Gzip了

4、:wq儲存退出，重新載入Nginx

 systemctl reload nginx; systemctl restart nginx

5、用curl測試Gzip是否成功開啟

curl -I -H "Accept-Encoding: gzip, deflate" "http://www.slyar.com/blog/"

HTTP/1.1 200 OK
Server: nginx/1.0.15
Date: Sun, 26 Aug 2012 18:13:09 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive

頁面成功壓縮

curl -I -H "Accept-Encoding: gzip, deflate" "http://www.slyar.com/blog/wp-content/plugins/photonic/include/css/photonic.css"

HTTP/1.1 200 OK
Server: nginx/1.0.15
Date: Sun, 26 Aug 2012 18:21:25 GMT
Content-Type: text/css
Last-Modified: Sun, 26 Aug 2012 15:17:07 GMT
Connection: keep-alive
Expires: Mon, 27 Aug 2012 06:21:25 GMT
Cache-Control: max-age=43200
Content-Encoding: gzip

css檔案成功壓縮

curl -I -H "Accept-Encoding: gzip, deflate" "http://www.slyar.com/blog/wp-includes/js/jquery/jquery.js"

HTTP/1.1 200 OK
Server: nginx/1.0.15
Date: Sun, 26 Aug 2012 18:21:38 GMT
Content-Type: application/x-javascript
Last-Modified: Thu, 12 Jul 2012 17:42:45 GMT
Connection: keep-alive
Expires: Mon, 27 Aug 2012 06:21:38 GMT
Cache-Control: max-age=43200
Content-Encoding: gzip

js檔案成功壓縮

curl -I -H "Accept-Encoding: gzip, deflate" "http://www.slyar.com/blog/wp-content/uploads/2012/08/2012-08-23_203542.png"

HTTP/1.1 200 OK
Server: nginx/1.0.15
Date: Sun, 26 Aug 2012 18:22:45 GMT
Content-Type: image/png
Last-Modified: Thu, 23 Aug 2012 13:50:53 GMT
Connection: keep-alive
Expires: Tue, 25 Sep 2012 18:22:45 GMT
Cache-Control: max-age=2592000
Content-Encoding: gzip

圖片成功壓縮

curl -I -H "Accept-Encoding: gzip, deflate" "http://www.slyar.com/blog/wp-content/plugins/wp-multicollinks/wp-multicollinks.css"

HTTP/1.1 200 OK
Server: nginx/1.0.15
Date: Sun, 26 Aug 2012 18:23:27 GMT
Content-Type: text/css
Content-Length: 180
Last-Modified: Sat, 02 May 2009 08:46:15 GMT
Connection: keep-alive
Expires: Mon, 27 Aug 2012 06:23:27 GMT
Cache-Control: max-age=43200
Accept-Ranges: bytes

最後來個不到1K的檔案，由於我的閾值是1K，所以沒壓縮.