You host must provide:
mod_expires, mod_headers, mod_rewrite, .htaccess# Remove -Multiviews if you show more than one character set
Options -Indexes -Multiviews
RewriteEngine on
# MJ12 Virus Bot
RewriteCond %{HTTP_USER_AGENT} ^MJ12bot/v1\.0\.8.*$
RewriteRule .* - [F]
RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK)
RewriteRule .* - [F]
<IfModule mod_deflate.c>
<FilesMatch "\.(js|css|htm?l)$">
SetOutputFilter DEFLATE
</FilesMatch>
</IfModule>
<IfModule mod_expires.c>
ExpiresActive On
ExpiresDefault A86400
ExpiresByType image/x-icon A2592000
ExpiresByType application/x-javascript A7257600
ExpiresByType text/css A2592000
ExpiresByType image/gif A2592000
ExpiresByType image/png A2592000
ExpiresByType image/jpg A2592000
ExpiresByType image/jpeg A2592000
ExpiresByType text/plain A604800
ExpiresByType application/x-shockwave-flash A604800
ExpiresByType video/x-flv A604800
ExpiresByType application/pdf A2419200
ExpiresByType text/html A600
</IfModule>
<IfModule mod_headers.c>
# 3 Month
<FilesMatch "\.(flv|gif|jpg|jpeg|png|ico|swf)$">
Header set Cache-Control "max-age=7257600"
FileETag MTime Size
</FilesMatch>
# 1 Week
<FilesMatch "\.(js|css|pdf|txt)$">
Header set Cache-Control "max-age=604800"
FileETag MTime Size
</FilesMatch>
# 10 Minutes
<FilesMatch "\.(html|htm)$">
Header set Cache-Control "max-age=600"
FileETag MTime Size
</FilesMatch>
# NONE Dynamic Files shouldn't have as much browser header information. It decreases load time and file size
<FilesMatch "\.(pl|php|cgi|spl)$">
Header unset Cache-Control
Header unset Expires
Header unset Last-Modified
FileETag None
Header unset Pragma
</FilesMatch>
# Hide .htaccess
<Files .htaccess>
order deny,allow
deny from all
</Files>
Adding this can bring your
Yslow rating up from a
D to a
B More factors are explained within the
Firefox plugin.
Image file size can play a large factor
in your Yslow grade.
