Nginx example of a method that enables gzip compression

One more thing to do after the server completes some configuration: enable gzip to compress the returned data to speed up the loading of the site.

Here is the configuration for enabling gzip on Nginx (just add it to the configuration file) :

 #  open gzip
gzip on;
 
#  To enable the gzip Files smaller than the set value will not be compressed 
gzip_min_length 1k;
 
# gzip  Compression level, 1-10 , the larger the number, the better the compression, and the more occupied CPU Time. 
gzip_comp_level 2;
 
#  The type of file to compress. 
gzip_types text/plain text/css application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript image/svg+xml font/ttf font/otf;
 
#  Whether in http header add Vary: Accept-Encoding , it is recommended to open 
gzip_vary on;
 
#  disable IE 6 gzip
gzip_disable "MSIE [1-6]\.";

More detailed configuration reference: http: / / nginx org/en/docs/http/ngx_http_gzip_static_module html

One of the more confusing do not know how to set the compression level. Some people have tested the compression level, and the specific data are as follows:

text/html � phpinfo () :

0  55.38 KiB (100.00% of original size)
1  11.22 KiB ( 20.26% of original size)
2  10.89 KiB ( 19.66% of original size)
3  10.60 KiB ( 19.14% of original size)
4  10.17 KiB ( 18.36% of original size)
5   9.79 KiB ( 17.68% of original size)
6   9.62 KiB ( 17.37% of original size)
7   9.50 KiB ( 17.15% of original size)
8   9.45 KiB ( 17.06% of original size)
9   9.44 KiB ( 17.05% of original size)

application/ x-javascript, jQuery 1.8.3 (Uncompressed)

0 261.46 KiB (100.00% of original size)
1 95.01 KiB ( 36.34% of original size)
2 90.60 KiB ( 34.65% of original size)
3 87.16 KiB ( 33.36% of original size)
4 81.89 KiB ( 31.32% of original size)
5 79.33 KiB ( 30.34% of original size)
6 78.04 KiB ( 29.85% of original size)
7 77.85 KiB ( 29.78% of original size)
8 77.74 KiB ( 29.73% of original size)
9 77.75 KiB ( 29.74% of original size)

You can see that the effect of compression level 1 is fading after 1. It is recommended to use compression level 2.

Related testing tools:

https://developers.google.com/speed/pagespeed/insights/
https://varvy.com/tools/gzip/