Options +FollowSymLinks -Indexes

RewriteEngine On
RewriteBase /



###########################################################
# INode can cause problems in Etags so we remove it from
# the calculation (see 
# http://developer.yahoo.com/performance/rules.html#etags)
FileETag -INode +MTime +Size



###########################################################
# GZIP text files
AddOutputFilterByType DEFLATE text/html text/plain text/xml text/javascript text/css application/x-javascript



###########################################################
# cache control
ExpiresActive On
ExpiresByType text/css "access plus 1 year"
ExpiresByType text/javascript "access plus 1 year"
ExpiresByType application/x-javascript "access plus 1 year"
ExpiresByType image/gif "access plus 1 month"
ExpiresByType image/png "access plus 1 month"
ExpiresByType image/jpg "access plus 1 month"
ExpiresByType image/jpeg "access plus 1 month"
ExpiresByType text/html "access plus 1 month"



###########################################################
# There's nothing worse than clicking a PDF link and having
# Acrobat take over your web browser, so...
# Ask what to do about all PDF files, don't just open Acrobat
SetEnvIf Request_URI "\.pdf$" requested_pdf=pdf
Header add Content-Disposition "Attachment" env=requested_pdf



###########################################################
# Redirect from www.example.com to example.com to ensure
# consistent indexing (see http://no-www.org/ and
# http://www.mattcutts.com/blog/seo-advice-url-canonicalization/)
RewriteCond %{HTTP_HOST}         ^www\.example\.com$                           [NC]
RewriteRule                      ^(.*)$ http://example.com/$1                  [R=permanent,L]



###########################################################
# Run-time JPEG resizing
RewriteCond %{QUERY_STRING}      ^(thumb|gallery|feed)$                        [nocase]
RewriteRule ^(.+\.jp[e]?g)$      /scripts/jpeg_format.php?src=/$1&mode=%1      [L,NC]



###########################################################
# Run-time CSS compression
RewriteRule ^(.+\.css)$          /scripts/css_compress.php?src=/$1             [L,NC]



###########################################################
# Run-time JS compression
RewriteRule ^(.+\.js)$           /scripts/js_compress.php?src=/$1              [L,NC]




###########################################################
# I prefer to build sites without trailing slashes, so...
# If the page is not found and there is a trailing slash, 
# remove the slash and re-run all the rewrite rules
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([^.]+)/$           $1                                            [R=permanent,N,QSA]