To analyze the speed of the site, we used the PageSpeed Insights service. This service checks the site for errors, page opening speed, and search engine optimization of your site. In this guide, we will increase the speed of the site by enabling compression and enabling a cache for static files on the nginx web server.

1. Enable gzip compression and cache settings.

Let's add the following settings to the server section of your host configuration file.

server {

...

     gzip on;
     gzip_comp_level 5;
     gzip_min_length 256;
     gzip_proxied any;
     gzip_vary on;

     gzip_types
     application/atom+xml
     application/javascript
     application/json
     application/ld+json
     application/manifest+json
     application/rss+xml
     application/vnd.geo+json
     application/vnd.ms-fontobject
     application/x-font-ttf
     application/x-web-app-manifest+json
     application/xhtml+xml
     application/xml
     font/opentype
     image/bmp
     image/svg+xml
     image/x-icon
     text/cache-manifest
     text/css
     text/plain
     text/vcard
     text/vnd.rim.location.xloc
     text/vtt
     text/x-component
     text/x-cross-domain-policy;
     # text/html is always compressed by gzip module

     location ~* \.(jpg|jpeg|png|gif|ico|css|js|pdf)$ {
         expires 7d;
     }
    
  ...
 
}

1.1 Let's check the configuration for errors

nginx -t

1.2 Restart the service

service nginx restart

Make sure your site is working correctly in your browser and check your PageSpeed Insights metrics again. Depending on the structure on different sites, the site speed indicator will increase by 15-20%.