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Sitback Team

Sitback is a leading digital agency based in The Rocks, Sydney. Voted top 25 in the 2016 BRW Best Places to Work in Australia, we have built a friendly 40 strong team to bring clients the best possible standards of service available. We specialise in Digital Delivery, UX Research and Design, Development, Support and Optimisation.

Tagged with: UX Tips

UX Tip #68 JS/CSS optimisation – concatenation

An optimised technical solution increases performance and enhances User Experience. It may not seem like it, especially for static content such as JS/CSS, but server requests are costly. There is a fair bit of overhead in each server request, a traditional HTTP/1 page load looks like the following: DNS lookup Establish connection to the web server Send HTTP request Wait for response Receive response Steps 1-3, in an average page load, are generally fairly small and are usually a few hundred milliseconds. However, if you have 30-40 JS/CSS files per page, those milliseconds can add up very quickly.

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