nginx compression

nginx.conf

@@ -28,13 +28,79 @@ http {
     text/cache-manifest                   appcache;
   }
 
+  # ----------------------------------------------------------------------
+  # | Compression                                                        |
+  # ----------------------------------------------------------------------
+
+  # https://nginx.org/en/docs/http/ngx_http_gzip_module.html
+
+  # Enable gzip compression.
+  # Default: off
   gzip on;
-  gzip_vary on;
+
+  # Compression level (1-9).
+  # 5 is a perfect compromise between size and CPU usage, offering about
+  # 75% reduction for most ASCII files (almost identical to level 9).
+  # Default: 1
+  gzip_comp_level 5;
+
+  # Don't compress anything that's already small and unlikely to shrink much
+  # if at all (the default is 20 bytes, which is bad as that usually leads to
+  # larger files after gzipping).
+  # Default: 20
+  gzip_min_length 256;
+
+  # Compress data even for clients that are connecting to us via proxies,
+  # identified by the "Via" header (required for CloudFront).
+  # Default: off
   gzip_proxied any;
-  gzip_comp_level 6;
-  gzip_buffers 16 8k;
-  gzip_http_version 1.1;
-  gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
+
+  # Tell proxies to cache both the gzipped and regular version of a resource
+  # whenever the client's Accept-Encoding capabilities header varies;
+  # Avoids the issue where a non-gzip capable client (which is extremely rare
+  # today) would display gibberish if their proxy gave them the gzipped version.
+  # Default: off
+  gzip_vary on;
+
+  # Compress all output labeled with one of the following MIME-types.
+  # text/html is always compressed by gzip module.
+  # Default: text/html
+  gzip_types
+    application/atom+xml
+    application/javascript
+    application/json
+    application/ld+json
+    application/manifest+json
+    application/rss+xml
+    application/geo+json
+    application/vnd.ms-fontobject
+    application/x-font-ttf
+    application/x-web-app-manifest+json
+    application/xhtml+xml
+    application/xml
+    application/rdf+xml
+    font/collection
+    font/opentype
+    font/otf
+    font/ttf
+    image/bmp
+    image/svg+xml
+    image/x-icon
+    text/cache-manifest
+    text/css
+    text/javascript
+    text/plain
+    text/vcard
+    text/vnd.rim.location.xloc
+    text/vtt
+    text/x-component
+    text/x-cross-domain-policy;
+
+  # This should be turned on if you are going to have pre-compressed copies (.gz) of
+  # static files available. If not it should be left off as it will cause extra I/O
+  # for the check. It is best if you enable this in a location{} block for
+  # a specific directory, or on an individual server{} level.
+  # gzip_static on;
 
   server {
     listen       3301;