How is your website impacting the planet?

The internet consumes a lot of electricity. 416.2TWh per year to be precise. To give you some perspective, that’s more than the entire United Kingdom.

From data centres to transmission networks to the devices that we hold in our hands, it is all consuming electricity, and in turn producing carbon emissions.

Beautifully sustainable websites as tested by the website carbon calculator

Here are some of the most efficient sites as tested by the website carbon calculator. These websites make great use of compressed images, efficient file formats and lightweight fonts, avoiding bloated frameworks. If you want to know more, check out our resources on designing sustainable websites and setting a page weight budget.


0.30g CO2/page view


0.23g CO2/page view

Riverford Organic

0.50g CO2/page view

Low Tech Magazine

0.24g CO2/page view


0.34g CO2/page view


0.14g CO2/page view

Curious about web sustainability?

Further reading

Want to learn more? Check out Tom's latest book 'Sustainable Web Design' and learn how to make small, thoughtful changes during design and development that can reduce the damage and cost to the environment.

Read more

This website carbon calculator has been created by Third Eye Labs to help inspire and educate people to create a zero carbon internet. It is hosted using renewable energy.


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