How environmentally friendly is your web page?

Website CO2 emissions calculator: see how eco-friendly and energy efficient is your homepage!

Did you know that every web page generates carbon emissions? Test how energy efficient and eco friendly is your homepage, and start improving its energy efficiency.
How does the free Eco-Friendly tool work?

  • Enter the full web page address;
  • Click on the “Calculate” button;
  • Get your result in seconds.

This tool is free and always will be: feel free to share it on and

We're just getting your results:

The web page is not available. Try again later or report the issue here

Carbon results for:

CO2 emitted in a year*

CO2 emitted compared to the average web page

CO2 emitted compared to the average web page

CO2 emitted compared to the average web page

Good job! This web page respects the environment!

Uh oh. It looks like this web page emits too much CO2!

The amount of CO2 this web page produces in a year* is equal to that produced by:

on an airliner
(CO2 emitted per passenger)

on your car
(CO2 emitted per passenger)

WHAT YOU CAN DO FOR A MORE ECO-FRIENDLY INTERNET

The environment is important for all of us and we must preserve it for future generations to come. According to the EU, Internet is the 4th largest polluter in the world: did you know that an optimized website produces less carbon, reducing global warming?

Here are 2 things you can do to further reduce the Web’s impact on the planet:

  1. Join the new Karma Metrix project , measure, improve & certify the environmental sustainability of your website;
  2. Share the tool on , and on your social network of choice;

WHAT YOU CAN DO FOR A MORE ECO-FRIENDLY INTERNET

The environment is important for all of us and we must preserve it for future generations to come. According to the EU, Internet is the 4th largest polluter in the world: did you know that an optimized website produces less carbon, reducing global warming?

Here are 3 things you can do if you manage the website you just tested:

  1. Use compressed or smaller images;
  2. Reduce and optimize the use of external resources;
  3. Join the new Karma Metrix project , measure, improve & certify the environmental sustainability of your website;

* Estimated amount of CO2 produced in a year by the web page, assuming an average of 10,000 visits per month