Folgender Code in die .htaccess einfügen und der Pagespeed merklich schneller.

# BEGIN Expires-Headers

ExpiresActive On
ExpiresDefault "access plus 30 seconds"
ExpiresByType text/html "access plus 500 seconds"
ExpiresByType application/xhtml+xml "access plus 500 seconds"
ExpiresByType image/jpg "access plus 14 days"
ExpiresByType image/jpeg "access plus 14 days"
ExpiresByType image/png "access plus 14 days"
ExpiresByType image/gif "access plus 14 days"
ExpiresByType image/x-icon "access plus 14 days"
ExpiresByType application/x-shockwave-flash "access plus 14 days"
ExpiresByType text/css "access plus 14 days"
ExpiresByType text/javascript "access plus 14 days"
ExpiresByType application/x-javascript "access plus 14 days"

# END Expires-Headers

# Deflate Compression FileType

AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE text/javascript
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/atom_xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE application/x-shockwave-flash

# End Deflate Compression FileType
# Deflate Compression MimeType


ExpiresActive on
ExpiresDefault "access plus 28 days"
SetOutputFilter DEFLATE


# End Deflate Compression MimeType