barnez on "[Plugin: WP Super Cache] Performance Report says to "Leverage browser caching""

If you're running Apache and have a .htaccess file in the root of your site you can add the following code before the #Begin WORDPRESS rules (but backup the file first before making any changes):

# BEGIN Expire headers
<ifModule mod_expires.c>
    ExpiresActive On
    ExpiresDefault "access plus 5 seconds"
    ExpiresByType image/x-icon "access plus 2592000 seconds"
    ExpiresByType image/jpeg "access plus 2592000 seconds"
    ExpiresByType image/png "access plus 2592000 seconds"
    ExpiresByType image/gif "access plus 2592000 seconds"
    ExpiresByType application/x-shockwave-flash "access plus 2592000 seconds"
    ExpiresByType text/css "access plus 604800 seconds"
    ExpiresByType text/javascript "access plus 648000 seconds"
    ExpiresByType application/javascript "access plus 648000 seconds"
    ExpiresByType application/x-javascript "access plus 648000 seconds"
    ExpiresByType text/html "access plus 600 seconds"
    ExpiresByType application/xhtml+xml "access plus 600 seconds"
</ifModule>
# END Expire headers