mod_pagespeed.conf for Magento 1.x

pagespeed.conf

<IfModule mod_pagespeed>

    # General Configuration
    ModPagespeed on
    ModPagespeedDomain *.domain.com
    ModPagespeedDomain images.domain.com
    ModPagespeedDomain assets.domain.com
    ModPagespeedStatistics on
    ModPagespeedStatisticsLogging on
    ModPagespeedLogDir /home/domain.com/public_html/var/pagespeed
    ModPagespeedRewriteLevel CoreFilters

    # May be bad to run in parallel with sessions (seperate instance?)
    ModPagespeedMemcachedServers "tcp://127.0.0.1:11220"

    # define path to cache if memcache isn't enabled
    ModPagespeedFileCachePath            "/home/domain.com/public_html/var/cache/pagespeed/"
    ModPagespeedFileCacheSizeKb          102400
    ModPagespeedFileCacheCleanIntervalMs 3600000
    ModPagespeedFileCacheInodeLimit      500000
    
    # touch file cache path cache.flush to global purge/flush cache
    ModPagespeedEnableCachePurge off
    
    # Filters to Disable
    ModPagespeedDisableFilters inline_css,inline_javascript

    # Filters to Enable
    ModPagespeedEnableFilters move_css_to_head
    ModPagespeedEnableFilters rewrite_css
    ModPagespeedEnableFilters rewrite_javascript
    ModPagespeedEnableFilters outline_css
    ModPagespeedEnableFilters outline_javascript
    ModPagespeedEnableFilters collapse_whitespace
    ModPagespeedEnableFilters extend_cache
    ModPagespeedEnableFilters defer_javascript
    ModPagespeedEnableFilters insert_dns_prefetch
    ModPagespeedEnableFilters lazyload_images
    ModPagespeedEnableFilters make_google_analytics_async
    ModPagespeedEnableFilters canonicalize_javascript_libraries
    #ModPagespeedEnableFilters remove_comments

    # New Filters to try    
    ModPagespeedEnableFilters move_css_above_scripts
    ModPagespeedEnableFilters combine_css
    ModPagespeedEnableFilters combine_javascript
    ModPagespeedEnableFilters MaxCombinedJsBytes 300000
    ModPagespeedEnableFilters CombineAcrossPaths on
    ModPagespeedEnableFilters insert_image_dimensions

    # CDN Mapping to local domains
    ModPagespeedMapOriginDomain ee.domain.com images.domain.com assets.domain.com
    ModPagespeedMapRewriteDomain images.domain.com assets.domain.com

    # Page Speed Admin access
    <Location /pagespeed_admin>
      Order allow,deny
      Allow from localhost
      Allow from 127.0.0.1
      #Allow from any
      SetHandler pagespeed_admin
    </Location>

</IfModule>