enhance mod PageSpeed optimization

etc/nginx/includes/mod_pagespeed.conf

@@ -1,34 +1,33 @@
 # Mod PageSpeed global vhost config
 pagespeed on;
 
-# Memcached
-pagespeed MemcachedServers "127.0.0.1:11212";
-# time out in micro seconds
-pagespeed MemcachedTimeoutUs 1000000;
 
-# Redis
-#pagespeed RedisServer "127.0.0.1:6380";
-
-pagespeed EnableCachePurge on;
-pagespeed PurgeMethod PURGE;
-
-
-### Filters ###
-
-# RewriteLevel CoreFilters | OptimizeForBandwidth | PassThrough
-pagespeed RewriteLevel CoreFilters;
+### Inherites Filters ###
 
 # Enable core filters.
 pagespeed EnableFilters core,extend_cache;
 
 pagespeed EnableFilters insert_dns_prefetch;
-#pagespeed EnableFilters hint_preload_subresources;
+pagespeed EnableFilters hint_preload_subresources;
 
+# In-Place Resource Optimization.
+pagespeed EnableFilters in_place_optimize_for_browser;
+pagespeed InPlaceResourceOptimization on;
+#pagespeed PreserveUrlRelativity on;
+
+# Rewrite Domains for CDN related.
+pagespeed EnableFilters rewrite_domains;
 
 ## Style Sheet (CSS).
 
+# Preserve CSS url.
+#pagespeed CssPreserveURLs on;
+
 # Combine CSS.
 pagespeed EnableFilters combine_css;
+pagespeed MaxCombinedCssBytes 512000;
+#pagespeed MaxSegmentLength 250;
+#pagespeed CombineAcrossPaths off;
 
 # Flatten CSS imports.
 #pagespeed EnableFilters flatten_css_imports;
@@ -44,6 +43,9 @@ pagespeed EnableFilters combine_css;
 # Prioritize critical CSS.
 pagespeed EnableFilters prioritize_critical_css;
 
+# Sprites image.
+pagespeed EnableFilters sprite_images;
+
 # Minify CSS.
 pagespeed EnableFilters rewrite_css;
 pagespeed EnableFilters move_css_to_head,move_css_above_scripts;
@@ -52,9 +54,10 @@ pagespeed EnableFilters move_css_to_head,move_css_above_scripts;
 ## JavaScript (JS)
 
 # Combine JS.
-#pagespeed EnableFilters combine_javascript;
-#pagespeed MaxCombinedJsBytes 512000;
-#pagespeed CombineAcrossPaths on;
+pagespeed EnableFilters combine_javascript;
+pagespeed MaxCombinedJsBytes 512000;
+#pagespeed MaxSegmentLength 250;
+#pagespeed CombineAcrossPaths off;
 
 # Inline JS.
 pagespeed EnableFilters inline_javascript;
@@ -85,17 +88,21 @@ pagespeed EnableFilters lazyload_images;
 pagespeed LazyloadImagesAfterOnload off;
 pagespeed LazyloadImagesBlankUrl "https://www.gstatic.com/psa/static/1.gif";
 
-# Rewrite image.
+
+# By default PageSpeed able to determine if browser support for WebP,
+# so it is save to enable WebP convertion by default.
+#pagespeed EnableFilters convert_jpeg_to_progressive,convert_jpeg_to_webp,convert_to_webp_animated,convert_to_webp_lossless;
+pagespeed EnableFilters recompress_images;
+
+# Shrinks the dimensions of an image to the width= or height= attribute specified in the <img> tag or 
+# in the inline style= attribute.
+pagespeed EnableFilters resize_images;
+
+# This is a filter group that includes inline_images, recompress_images, convert_to_webp_lossless, and resize_images.
 pagespeed EnableFilters rewrite_images;
-pagespeed EnableFilters convert_jpeg_to_progressive;
 
-# Not all browsers support WebP and if using Varnish, you can improve hit rate considerably
-# by not converting images to webp. Contact Sonassi support if using Varnish with PageSpeed to
-# improve hit rate
-pagespeed DisableFilters convert_jpeg_to_webp,convert_to_webp_lossless,convert_to_webp_animated,recompress_webp;
-
-# Sprites image.
-pagespeed EnableFilters rewrite_css,sprite_images;
+# This option controls the response headers PageSpeed may use when deciding how to recompress images in In-Place Resource Optimization mode.
+pagespeed AllowVaryOn Auto;
 
 
 ### Default PageSpeed location blocks ###
@@ -108,18 +115,6 @@ location ~ "\.pagespeed\.([a-z]\.)?[a-z]{2}\.[^.]{10}\.[^.]+" {
 location ~ "^/pagespeed_static/" {}
 location ~ "^/ngx_pagespeed_beacon$" {}
 
-### PageSpeed Statistics ###
-
-# Enable.
-pagespeed Statistics on;
-pagespeed StatisticsLogging on;
-
-# Administration page.
-pagespeed StatisticsPath /ngx_pagespeed_statistics;
-pagespeed MessagesPath /ngx_pagespeed_message;
-pagespeed ConsolePath /pagespeed_console;
-pagespeed AdminPath /pagespeed_admin;
-
 # Statistics location blocks.
 location /ngx_pagespeed_statistics {
     allow all;

etc/nginx/mod_pagespeed

@@ -3,19 +3,17 @@
 # Unplugged (inactive) by default, standby, off, on.
 pagespeed unplugged;
 
-# Other settings.
-pagespeed HonorCsp on;
-pagespeed RespectVary on;
-pagespeed DisableRewriteOnNoTransform off;
-#pagespeed ModifyCachingHeaders off;
+# Memcached
+pagespeed MemcachedServers "127.0.0.1:11212";
+# time out in micro seconds
+pagespeed MemcachedTimeoutUs 1000000;
 
-# Do not show PageSpeed version in the header.
-pagespeed XHeaderValue "LEMPer/PageSpeed";
+# Redis
+#pagespeed RedisServer "127.0.0.1:6380";
 
-pagespeed PreserveUrlRelativity on;
-#pagespeed AllowVaryOn Auto;
 
-# Cache settings.
+## Cache settings ##
+
 pagespeed FileCachePath "/var/cache/nginx/pagespeed_cache";
 pagespeed FileCacheSizeKb 102400;
 pagespeed FileCacheCleanIntervalMs 3600000;
@@ -28,7 +26,39 @@ pagespeed CreateSharedMemoryMetadataCache /var/cache/nginx/pagespeed_cache 51200
 pagespeed DefaultSharedMemoryCacheKB 500000;
 pagespeed MessageBufferSize 1000000;
 
-pagespeed LogDir /var/log/pagespeed;
+pagespeed EnableCachePurge on;
+pagespeed PurgeMethod PURGE;
 
+
+## Statistics and Admin ##
+
+# Pagespeed statistic and admin panel settings.
+pagespeed Statistics on;
+pagespeed StatisticsLogging on;
+pagespeed LogDir /var/log/pagespeed;
+pagespeed UsePerVhostStatistics on;
+
+# Statistics path settings.
+pagespeed StatisticsPath /ngx_pagespeed_statistics;
 pagespeed GlobalStatisticsPath /ngx_pagespeed_global_statistics;
+pagespeed MessagesPath /ngx_pagespeed_message;
+pagespeed ConsolePath /pagespeed_console;
+pagespeed AdminPath /pagespeed_admin;
 pagespeed GlobalAdminPath /pagespeed_global_admin;
+
+
+## Filters ##
+
+# RewriteLevel CoreFilters | OptimizeForBandwidth | PassThrough
+pagespeed RewriteLevel CoreFilters;
+
+
+## Other settings ##
+
+pagespeed HonorCsp on;
+pagespeed RespectVary on;
+pagespeed DisableRewriteOnNoTransform off;
+pagespeed ModifyCachingHeaders on;
+
+# Do not show PageSpeed version in the header.
+pagespeed XHeaderValue "LEMPer/PageSpeed";

etc/nginx/nginx.conf

@@ -76,9 +76,6 @@ http {
     # gzip (default) or brotli (requires Nginx installed with brotli module).
     include /etc/nginx/comp_gzip;
 
-    # Mod Ngx_PageSpeed.
-    include /etc/nginx/mod_pagespeed;
-
     # Enable FastCGI and Proxy Cache.
     # Uncomment to enable FastCGI cache. If disabled, do not use the cached vhost setting.
     include /etc/nginx/fastcgi_cache;
@@ -98,6 +95,9 @@ http {
     # Uncomment if you're using frontend CloudFlare CDN.
     include /etc/nginx/http_cloudflare_ips;
 
+    # Mod Ngx_PageSpeed (always uncomment this).
+    include /etc/nginx/mod_pagespeed;
+
     # Virtual host configurations.
     #index index.php index.html index.htm;
     include /etc/nginx/conf.d/*.conf;