Nginx conf for mod pagespeed

pagespeed.conf

# Google Pagespeed
# https://developers.google.com/speed/pagespeed/module/configuration
pagespeed on;
pagespeed FileCachePath /var/cache/ngx_pagespeed/;

# let's speed up PageSpeed by storing it in the super duper fast memcached
pagespeed MemcachedThreads 1;
pagespeed MemcachedServers "127.0.0.1:11211";

# show half the users an optimized site, half the regular site
pagespeed RunExperiment on;
pagespeed AnalyticsID UA-33398334-1;
pagespeed ExperimentVariable 1;
pagespeed ExperimentSpec "id=1;percent=50;level=CoreFilters;enabled=collapse_whitespace,remove_comments;";
pagespeed ExperimentSpec "id=2;percent=50";

# PageSpeed Cache Purge
pagespeed EnableCachePurge on;
pagespeed PurgeMethod PURGE;

# Filter settings
pagespeed RewriteLevel PassThrough;

# CSS Minification
pagespeed EnableFilters combine_css,rewrite_css;

# JS Minification
pagespeed EnableFilters combine_javascript,rewrite_javascript;

# Images Optimization
pagespeed EnableFilters lazyload_images;
pagespeed EnableFilters rewrite_images;
pagespeed EnableFilters convert_jpeg_to_progressive,convert_png_to_jpeg,convert_jpeg_to_webp,convert_to_webp_lossless;

# Remove comments from HTML 
pagespeed EnableFilters remove_comments; 
# Remove WHITESPACE from HTML 
pagespeed EnableFilters collapse_whitespace;


# Ensure requests for pagespeed optimized resources go to the pagespeed handler
# and no extraneous headers get set.
location ~ "\.pagespeed\.([a-z]\.)?[a-z]{2}\.[^.]{10}\.[^.]+" {
  add_header "" "";
}
location ~ "^/pagespeed_static/" { }
location ~ "^/ngx_pagespeed_beacon$" { }