“High quality images take longer to load, so here are several ways to reduce the size of the images, without compromising quality. Don’t allow your browser to resize your images Don’t scale down Use an image sprite”

“Each time a visitor clicks on your site and tries to access a page that contains an external file, your site has to access the file from the server where the external file is stored. This drastically reduces the speed of your website, as you are at the mercy of the speed of the other site. Try these tips to limit external resources from third-party sites when possible. Limit plugins Limit embedded media Avoid using Flash”

“Page weight is a very important factor for web performance, and also a common culprit. Heavy pages will drag your site down. Reducing page weight can improve web performance through faster download time. Reduce bulky code Minimize the number of files Use HTTP Caching”

“The leading cause of excess web content weight and culprit of poor performance is Java Script. When the browser stumbles upon a script, it stops and waits for the script engine to translate. Bottom line – use as few scripts as possible and if you need to include them, put them at the bottom of the page.”