Originally posted on: http://geekswithblogs.net/ihaynes/archive/2014/05/29/page-speed-and-itrsquos-affect-on-your-business.aspx

Page speed was an important issue 10 years ago, when we all had slow modems, but became less so with the advent of fast broadband connections that even seemed to make Ajax unnecessary.  Then along came the mobile internet and we’re back to a world where page speed and asset optimisation are critical again. If you doubt this an article on SitePoint discussing ’Page Speed and Business Metrics’ may change your mind.

http://www.sitepoint.com/page-speed-business-metrics/

Here are some of the figures it quotes:

Walmart – saw a 2% increase in conversions for every second of improvement in page load time. Put another way, accumulated growth of revenues went up 1% for every 100 milliseconds of load time improvement.

Yahoo – for every 400 milliseconds of improvement, the site traffic increased by 9%.

The bottom line is that if people have to wait more than a few seconds for a page to fully render, particularly on a mobile device, they’ll probably go elsewhere. Ignore this at your peril.

For two previous posts on the subject see:

Page Weight: 10 easy fixes

Xat.com Image Optimiser – Useful for RWD/Mobile