Htaccess Base Directives, Pagespeed Leverage Browser Caching, Enable Compression

.htaccess

## EXPIRES CACHING ##
<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType image/jpg "access 1 year"
ExpiresByType image/jpeg "access 1 year"
ExpiresByType image/gif "access 1 year"
ExpiresByType image/png "access 1 year"
ExpiresByType text/css "access 1 month"
ExpiresByType text/html "access 1 month"
ExpiresByType application/pdf "access 1 month"
ExpiresByType text/x-javascript "access 1 month"
ExpiresByType application/x-javascript "now plus 1 months"
ExpiresByType application/javascript "access 1 month"
ExpiresByType application/x-shockwave-flash "access 1 month"
ExpiresByType image/x-icon "access 1 year"
ExpiresDefault "access 1 month"
</IfModule>

## COMPRESSION
<ifModule mod_gzip.c>
mod_gzip_on Yes
mod_gzip_dechunk Yes
mod_gzip_item_include file .(html?|txt|css|js|php|pl)$
mod_gzip_item_include handler ^cgi-script$
mod_gzip_item_include mime ^text/.*
mod_gzip_item_include mime ^application/x-javascript.*
mod_gzip_item_exclude mime ^image/.*
mod_gzip_item_exclude rspheader ^Content-Encoding:.*gzip.*
</ifModule>

## ALT. COMPRESSION
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript

<IfModule pagespeed_module>
  ModPagespeed on

  ModPagespeedStaticAssetPrefix [CHANGE TO ABS PATH TO SITE ROOT]

  ModPagespeedDisableFilters inline_css,inline_javascript

  ModPagespeedEnableFilters move_css_to_head
  ModPagespeedEnableFilters flatten_css_imports
  ModPagespeedEnableFilters outline_css,outline_javascript
  ModPagespeedEnableFilters combine_css,combine_javascript
  ModPagespeedEnableFilters rewrite_css,rewrite_javascript
  ModPagespeedEnableFilters remove_comments,collapse_whitespace, elide_atttributes
  ModPagespeedEnableFilters rewrite_images
  ModPagespeedEnableFilters insert_dns_prefetch
  ModPagespeedEnableFilters defer_javascript

  #
  ModPagespeedEnableFilters inline_preview_images
  ModPagespeedEnableFilters resize_mobile_images
  
</IfModule>