Use Cookie-free Domains

We discussed what HTTP cookies were in a previous section and why keeping the cookie file size to a minimum is another method that can assist with helping boost page performance. While having cookies great for delivering a better user experience, sometimes serving up a cookie-free domain is beneficial, such as when delivering static content, like images or CSS files. With these elements, it is not necessary to serve up a cookie with them. This would only create more unnecessary network traffic for content that is static and not changing. Implementing a cookie-free domain allows developers to break up content that uses cookies with content that does not, helping to improve site performance.