When building a web site, it is good practice to optimise your images and code for faster loading. However, as download speeds have continually improved in recent years, optimisation has often been overlooked on many web sites. We have all visited web sites with 2, 3 or even 5 megabyte images, often uploaded straight from the camera to the site!
This will mean slow load times, which in turn lead to a poor and frustrating user experience and a downgrade in Google’s search rankings. Not good if your business relies on your web site…
But there is another equally important reason to improve your web site performance – its carbon footprint. Recent stats show that the transmission of 1GB of data uses an estimated 5kWh of electricity – it’s easy to see that even a moderately busy web site that is poorly optimised can use a lot more electricity than it needs.
Check your web site
So how efficient is my web site? Try this simple calculator at Website Carbon. Just type in a URL to see the results. We found that some of our sites (the newer ones) are quite efficient – in the top 20% – and some (the older ones) are quite carbon hungry. There’s obviously more work to be done here.