File ngx_pagespeed.conf.sample of Package nginx

pagespeed on;
pagespeed RewriteLevel CoreFilters;

# needs to exist and be writable by nginx
pagespeed FileCachePath /var/cache/nginx/ngx_pagespeed;

################################################################################
## Statistics logging                                                         ##
################################################################################
pagespeed Statistics on;
pagespeed StatisticsLogging on;
pagespeed LogDir /var/log/pagespeed;

################################################################################
## Optimize caching                                                           ##
################################################################################

# This filter identifies popular JavaScript libraries that can be replaced with 
# ones hosted for free by a JavaScript library hosting service — by default the 
# Google Hosted Libraries. 
#pagespeed EnableFilters canonicalize_javascript_libraries;

# Improve the cacheability of a web page's resources without compromising the 
# ability to change the resources and have those changes propagate to users' 
# browsers.
pagespeed EnableFilters extend_cache;

# 'Extend Cache PDFs' is a version of Extend Cache that acts on PDFs. Unlike 
# 'Extend Cache' it applies not only to resources but also to hyperlinks. 
#pagespeed EnableFilters extend_cache_pdfs;

# The 'Outline JavaScript' filter outlines all JavaScript that is larger than a 
# minimum threshold in bytes. 
#pagespeed EnableFilters outline_javascript;
#pagespeed JsOutlineMinBytes 3000;

################################################################################
## Minimize round-trip times                                                  ##
################################################################################

# 'Combine CSS' seeks to reduce the number of HTTP requests made by a browser 
# during page refresh by replacing multiple distinct CSS files with a single CSS
# file, containing the contents of all of them.
pagespeed EnableFilters combine_css;

# 'Move CSS Above Scripts' seeks to make sure scripts do not block the loading
# of CSS resources.
pagespeed EnableFilters move_css_above_scripts;

# Recursively processes imported CSS files; if a file cannot be processed then 
# the entire process is aborted and the initial CSS is left unflattened.
pagespeed EnableFilters flatten_css_imports;
#pagespeed CssFlattenMaxBytes bytes;

# When the 'Inline CSS' filter is enabled, The contents of small external CSS
# resources are written directly into the HTML document; therefore the browser
# does not request those CSS resources independently.
pagespeed EnableFilters inline_css;
#pagespeed CssInlineMaxBytes bytes;

# When the 'Inline Google Fonts API CSS' filter is enabled, the contents of the
# small external CSS resources produced to load the fonts are written directly
# into the HTML document; the browser does not need to request those CSS
# resources independently.
pagespeed EnableFilters inline_google_font_css;

# 'Combine JavaScript' seeks to reduce the number of HTTP requests made by a
# browser during page refresh by replacing multiple distinct JavaScript files
# with a single one.
pagespeed EnableFilters combine_javascript;
#pagespeed MaxCombinedJsBytes MaxBytes;
#pagespeed MaxSegmentLength 250;
#pagespeed CombineAcrossPaths off;

# This affects filters rewrite_javascript, combine_javascript,
# inline_javascript, extend_cache, and extend_cache_scripts.
#
# Off by default, turn it on if something looks wrong.
pagespeed AvoidRenamingIntrospectiveJavascript on;

# The contents of small external JavaScript resources are written directly into
# the HTML document; therefore, the browser does not request those JavaScript
# resources.
#pagespeed EnableFilters inline_javascript;

# Detects GIF and PNG images used as backgrounds in CSS. It attempts to combine
# all such images referenced from a CSS file into a single large image.
#
# Requires the 'Rewrite CSS' filter (rewrite_css)
pagespeed EnableFilters sprite_images;

# his filter reduces DNS lookup time by providing hints to the browser at the
# beginning of the HTML, which allows the browser to pre-resolve DNS for
# resources on the page.
pagespeed EnableFilters insert_dns_prefetch;

################################################################################
## Minimize request overhead                                                  ##
################################################################################

# Applies all domain mapping directives specified in pagespeed.conf to web
# resources that are not otherwise rewritten by PageSpeed. For example, if a
# resource is not cacheable, or filters which affect the resource are turned
# off, then it still may be desirable to apply domain sharding.
pagespeed EnableFilters rewrite_domains;

# 
#pagespeed MapRewriteDomain domain_to_write_into_html
#                           domain_specified_in_html;

################################################################################
## Minimize payload size                                                      ##
################################################################################

# Reduces bytes transmitted in an HTML file by removing unnecessary whitespace.
pagespeed EnableFilters collapse_whitespace;

# Combines multiple heads into one
#pagespeed EnableFilters combine_heads;

# Reduces the transfer size of HTML files by removing attributes from tags when
# the specified value is equal to the default value for that attribute
#pagespeed EnableFilters elide_attributes;

# Minifies JavaScript code, using an algorithm similar to that in Douglas
# Crockford's popular JSMin program
pagespeed EnableFilters rewrite_javascript;

# This is equivalent to enabling inline_images, recompress_images,
# convert_png_to_jpeg, and resize_images.
#
# In every case, the image on the page is replaced by the optimized version only
# if the optimized version is actually smaller than the original.
pagespeed EnableFilters rewrite_images;

# This rewriter improves page render times by identifying CSS rules needed to
# render the page, inlining those critical rules and deferring the load of the
# full CSS resources.
pagespeed EnableFilters prioritize_critical_css;

# Reduce the transfer size of HTML files by eliminating redundant image data URLs.
pagespeed EnableFilters dedup_inlined_images;

# Eliminates HTML comments
pagespeed EnableFilters remove_comments;
#pagespeed RetainComment " google_ad_section*";

# The quote removal filter eliminates unnecessary quotation marks
# (either "" or '') from HTML attributes. 
#pagespeed EnableFilters remove_quotes;

# Parse linked and inline CSS, rewrites the images found and minifies the CSS.
# The filter works on CSS found in <style> blocks and <link> refs.
pagespeed EnableFilters rewrite_css;
pagespeed EnableFilters fallback_rewrite_css_urls;

# Rewrites the CSS inside elements' style attributes as performed by
# rewrite_css, which includes CSS minification, image rewriting, image
# recompression, and cache extension, if enabled.
# 
# If both are enabled, rewrite_style_sttributes takes precedence.
pagespeed EnableFilters rewrite_style_attributes;
#pagespeed EnableFilters rewrite_style_attributes_with_url;

# Trims URLs by resolving them by making them relative to the base URL for the
# page. e.g. on http://www.example.com/, "http://www.example.com/foo" would be
# shortened to "foo"
pagespeed EnableFilters trim_urls;

################################################################################
## Optimize browser rendering                                                 ##
################################################################################

# Adds a response header that matches each meta tag with an http-equiv attribute.
# For example, <meta http-eqiv="Content-Language" content="fr"> would be
# converted to Content-Language: fr in the response headers.
# The original tag is left unchanged.
pagespeed EnableFilters convert_meta_tags;

# Tries to defer JavaScript execution until page load. It defers this by
# changing the type and src attributes of <script> elements on the HTML page
pagespeed EnableFilters defer_javascript;

# Generates low quality versions of the images that are inlined in the HTML page. 
pagespeed EnableFilters inline_preview_images;
pagespeed EnableFilters resize_mobile_images;
#pagespeed MaxInlinedPreviewImagesIndex IndexNumber;
#pagespeed MinImageSizeLowResolutionBytes MinBytes;

# Optimize browser rendering and reduce number of HTTP round-trips by deferring
# the loading of images which are not in the client's viewport. 
#
# This breaks Orbit slider as at Foundation 5.2.1
#pagespeed EnableFilters lazyload_images;

# Reduce the number of times the browser must re-flow the document by ensuring
# that the CSS styles are all parsed in the head, 
#pagespeed EnableFilters move_css_to_head;

################################################################################
## CSS Filters                                                                ##
################################################################################

################################################################################
## JavaScript Filters                                                         ##
################################################################################

################################################################################
## Image Filters                                                              ##
################################################################################

################################################################################
## Nginx Location Parameters                                                  ##
################################################################################
# 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 ~ "^/ngx_pagespeed_static/" { 
    
}

location ~ "^/ngx_pagespeed_beacon$" { 
    
}

location /pagespeed_console {
    allow 127.0.0.1;
    allow 79.168.198.221;
    deny all;
}

location /ngx_pagespeed_statistics { 
    allow 127.0.0.1;
    allow 79.168.198.221;
    deny all; 
}

location /ngx_pagespeed_global_statistics { 
    allow 127.0.0.1;
    allow 79.168.198.221;
    deny all; 
}

location /ngx_pagespeed_message { 
    allow 127.0.0.1;
    allow 79.168.198.221;
    deny all; 
}