Other resources about .htaccess config https://github.com/h5bp/html5-boilerplate/blob/master/.htaccess http://blog.revolunet.com/blog/2013/10/03/universal-CORS-htaccess/ http://stackoverflow.com/a/16342485 http://support.maxcdn.com/tutorials/htaccess-examples/

optimized.htaccess

# -----------------------------------------------------------------------
# Defining MIME types to ensure the web server actually knows about them.
# -----------------------------------------------------------------------
# -----------------------------------------------------------------------
# | Proper MIME types for all files |
# -----------------------------------------------------------------------

<IfModule mod_mime.c>

  # Audio
    AddType audio/mp4 m4a f4a f4b
    AddType audio/ogg oga ogg opus

  # Data interchange
    AddType application/json json map
    AddType application/ld+json jsonld

  # JavaScript
    # Normalize to standard type.
    # http://tools.ietf.org/html/rfc4329#section-7.2
    AddType application/javascript js

  # Video
    AddType video/mp4 f4v f4p m4v mp4
    AddType video/ogg ogv
    AddType video/webm webm
    AddType video/x-flv flv

  # Web fonts
    AddType application/font-woff woff
    AddType application/vnd.ms-fontobject eot

    # Browsers usually ignore the font MIME types and simply sniff the bytes
    # to figure out the font type.
    # http://mimesniff.spec.whatwg.org/#matching-a-font-type-pattern

    # Chrome however, shows a warning if any other MIME types are used for
    # the following fonts.

    AddType application/x-font-ttf ttc ttf
    AddType font/opentype otf

    # Make SVGZ fonts work on the iPad.
    # https://twitter.com/FontSquirrel/status/14855840545
    AddType image/svg+xml svgz
    AddEncoding gzip svgz

  # Other
    AddType application/octet-stream safariextz
    AddType application/x-chrome-extension crx
    AddType application/x-opera-extension oex
    AddType application/x-web-app-manifest+json webapp
    AddType application/x-xpinstall xpi
    AddType application/xml atom rdf rss xml
    AddType image/webp webp
    AddType image/x-icon cur
    AddType text/cache-manifest appcache manifest
    AddType text/vtt vtt
    AddType text/x-component htc
    AddType text/x-vcard vcf

</IfModule>

# -----------------------------------------------------------------------
# Compressing output.
# -----------------------------------------------------------------------
<IfModule mod_deflate.c>


  # Force compression for mangled headers.
  # http://developer.yahoo.com/blogs/ydn/posts/2010/12/pushing-beyond-gzipping
  <IfModule mod_setenvif.c>
      <IfModule mod_headers.c>
          SetEnvIfNoCase ^(Accept-EncodXng|X-cept-Encoding|X{15}|~{15}|-{15})$ ^((gzip|deflate)\s*,?\s*)+|[X~-]{4,13}$ HAVE_Accept-Encoding
          RequestHeader append Accept-Encoding "gzip,deflate" env=HAVE_Accept-Encoding
      </IfModule>
  </IfModule>

  # Compress all output labeled with one of the following MIME-types
  # (for Apache versions below 2.3.7, you don't need to enable `mod_filter`
  # and can remove the `<IfModule mod_filter.c>` and `</IfModule>` lines
  # as `AddOutputFilterByType` is still in the core directives).
  <IfModule mod_filter.c>
      AddOutputFilterByType DEFLATE application/atom+xml \
                                    application/javascript \
                                    application/json \
                                    application/ld+json \
                                    application/rss+xml \
                                    application/vnd.ms-fontobject \
                                    application/x-font-ttf \
                                    application/x-web-app-manifest+json \
                                    application/xhtml+xml \
                                    application/xml \
                                    font/opentype \
                                    image/svg+xml \
                                    image/x-icon \
                                    text/css \
                                    text/html \
                                    text/plain \
                                    text/x-component \
                                    text/xml
  </IfModule>


</IfModule>
# -----------------------------------------------------------------------------
# | Expires headers |
# -----------------------------------------------------------------------------
<IfModule mod_expires.c>

    ExpiresActive on
    ExpiresDefault "access plus 1 month"

  # CSS
    ExpiresByType text/css "access plus 1 week"

  # Data interchange
    ExpiresByType application/json "access plus 0 seconds"
    ExpiresByType application/ld+json "access plus 0 seconds"
    ExpiresByType application/xml "access plus 0 seconds"
    ExpiresByType text/xml "access plus 0 seconds"

  # Favicon (cannot be renamed!) and cursor images
    ExpiresByType image/x-icon "access plus 1 week"

  # HTML components (HTCs)
    ExpiresByType text/x-component "access plus 1 month"

  # HTML
    ExpiresByType text/html "access plus 0 seconds"

  # JavaScript
    ExpiresByType application/javascript "access plus 1 week"

  # Manifest files
    ExpiresByType application/x-web-app-manifest+json "access plus 0 seconds"
    ExpiresByType text/cache-manifest "access plus 0 seconds"

  # Media
    ExpiresByType audio/ogg "access plus 1 month"
    ExpiresByType image/gif "access plus 1 month"
    ExpiresByType image/jpeg "access plus 1 month"
    ExpiresByType image/png "access plus 1 month"
    ExpiresByType image/ico "access plus 1 month"
    ExpiresByType video/mp4 "access plus 1 month"
    ExpiresByType video/ogg "access plus 1 month"
    ExpiresByType video/webm "access plus 1 month"

  # Web feeds
    ExpiresByType application/atom+xml "access plus 1 hour"
    ExpiresByType application/rss+xml "access plus 1 hour"

  # Web fonts
    ExpiresByType application/font-woff "access plus 1 month"
    ExpiresByType application/vnd.ms-fontobject "access plus 1 month"
    ExpiresByType application/x-font-ttf "access plus 1 month"
    ExpiresByType font/opentype "access plus 1 month"
    ExpiresByType image/svg+xml "access plus 1 month"

</IfModule>

# -----------------------------------------------------------------------
# Cache-Control Headers
# -----------------------------------------------------------------------
<IfModule mod_headers.c>
  <FilesMatch "\\.(ico|jpe?g|png|gif|swf|gz|ttf)$">
    Header set Cache-Control "max-age=2592000, public"
  </FilesMatch>
  <FilesMatch "\\.(css)$">
    Header set Cache-Control "max-age=2592000, public"
  </FilesMatch>
  <FilesMatch "\\.(js)$">
    Header set Cache-Control "max-age=2592000, private"
  </FilesMatch>
  <FilesMatch "\\.(html|htm)$">
    Header set Cache-Control "max-age=7200, public"
  </FilesMatch>
  # Disable caching for scripts and other dynamic files
  <FilesMatch "\.(pl|php|cgi|spl|scgi|fcgi)$">
    Header unset Cache-Control
  </FilesMatch>
  # By default allow cross-origin access to web fonts.
  <FilesMatch ".(eot|ttf|otf|woff)$">
    Header set Access-Control-Allow-Origin "*"
  </FilesMatch>
</IfModule>

# ------------------------------------------------------------------------------
# | ETags |
# ------------------------------------------------------------------------------

# Remove `ETags` as resources are sent with far-future expires headers.
# http://developer.yahoo.com/performance/rules.html#etags.

# `FileETag None` doesn't work in all cases.
<IfModule mod_headers.c>
    Header unset ETag
</IfModule>

FileETag None