Why so slow? 21 tips to deliver content to your website visitors at lightning speed.

1. Reduce the number of HTTP Requests
Each asset (images, flash, javascript file, css file) requires it’s own HTTP Request when your website is viewed.
Some common mistakes are:

using multiple JavaScript files
using multiple CSS files
using multiple images when CSS sprites can be used instead

To reduce HTTP requests, try aggregating multiple files into a single piece of content.
2. [...]