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Recently I've been asked to optimise an already developed web site. It's always a bit difficult to look into code written by someone else, and in this case it has been a pain in the neck: no comments, no code layout, strange and obscure variable names and so on. One thing however has caught my eye: external JavaScript files and CSS stylesheets were scattered all around, making the loading of the web pages not fluid.
I would like to share with you some considerations that we all should be very aware when we develop web pages. We will talk about external JavaScript files and CSS stylesheets, how to optimise them and how to reduce RTT (round-trip time).
Web development, web design and programming.