The following is a list of code snippets and urls and tools to improve site performance.
htaccsss file :
############################################ ## enable apache served files compression ## http://developer.yahoo.com/performance/rules.html#gzip # Insert filter SetOutputFilter DEFLATE # Netscape 4.x has some problems... BrowserMatch ^Mozilla/4 gzip-only-text/html # Netscape 4.06-4.08 have some more problems BrowserMatch ^Mozilla/4\.0[678] no-gzip # MSIE masquerades as Netscape, but it is fine BrowserMatch \bMSIE !no-gzip !gzip-only-text/html # Don't compress images SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary # Make sure proxies don't deliver the wrong content #Header append Vary User-Agent env=!dont-vary ExpiresActive On ExpiresByType text/javascript "A604800" ExpiresByType text/css "A604800" ExpiresByType image/x-icon "A31536000" ExpiresByType image/gif "A604800" ExpiresByType image/jpg "A604800" ExpiresByType image/jpeg "A604800" ExpiresByType image/png "A604800"
image compression: smush it
js min: dean packer or js min
css min:css compressor or css optimiser
cdn :Amazon’s S3 CDN
s3up php s3 uploader (set far future headers for static content)
verify: Yslow and web page tester