Example mod_pagespeed conf for AWS Elastic Beanstalk.

enable_mod_pagespeed.conf

    # mod_deflate configuration
    <IfModule mod_deflate.c>
    # Restrict compression to these MIME types
    AddOutputFilterByType DEFLATE text/plain
    AddOutputFilterByType DEFLATE text/html
    AddOutputFilterByType DEFLATE application/xhtml+xml
    AddOutputFilterByType DEFLATE text/xml
    AddOutputFilterByType DEFLATE application/xml
    AddOutputFilterByType DEFLATE application/xml+rss
    AddOutputFilterByType DEFLATE application/x-javascript
    AddOutputFilterByType DEFLATE text/javascript
    AddOutputFilterByType DEFLATE text/css
    AddOutputFilterByType DEFLATE image/png
    AddOutputFilterByType DEFLATE image/gif
    AddOutputFilterByType DEFLATE image/jpeg
     
    # Level of compression (Highest 9 - Lowest 1)
    DeflateCompressionLevel 9
     
    # Netscape 4.x has some problems.
    BrowserMatch ^Mozilla/4 gzip-only-text/html
     
    # Netscape 4.06-4.08 have some more problems
    BrowserMatch ^Mozilla/4\.0[678] no-gzip
     
    # MSIE masquerades as Netscape, but it is fine
    BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html
     
    <IfModule mod_headers.c>
        # Make sure proxies don't deliver the wrong content
        Header append Vary User-Agent env=!dont-vary
    </IfModule>
     
    </IfModule>
    
    
    ModPagespeedEnableFilters rewrite_domains
    ModPagespeedEnableFilters trim_urls
    #Example of setting up a CDN
    ModPagespeedMapRewriteDomain https://example.cloudfront.net example.com
    ModPagespeedEnableFilters extend_cache
    ModPagespeedEnableFilters collapse_whitespace
    ModPagespeedEnableFilters combine_javascript
    ModPagespeedEnableFilters insert_dns_prefetch
    ModPagespeedEnableFilters rewrite_javascript
    
    <FilesMatch "\.(jpg|jpeg|gif|png|js|css)$">
    Header set Cache-control "public, max-age=300"
    </FilesMatch>