Analyse your website's ecodesign maturity

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For decision-makers and IT professionals, ECOMETER assesses the environmental impact of your online service on all phases of its life cycle.

Test it green

ECOMETER tests 115 ecodesign best practices from the reference book published by Eyrolles, with contributions by more than 34 business experts.

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Internationally intended, conducted with ADEME's financial support, ECOMETER is community driven, open-source, free and pedagogically oriented.

The results given by this tool are for educational and diagnostic purpose only, it is not intended to compare websites.
This tool is in beta version and still in active development, all given informations may change in the future.

Best pratice examples...

From design to hosting, 115 best practices are tested and explained. Here are some examples, but be sure to check the other ones:

Hosting #46

Do not generate 404 pages

The 404 page should be as light as possible, or ideally nonexistent. When the browser requests a resource which does not exist (image, CSS style sheet, JavaScript file, etc.), the server replies with the 404 page, which is sometimes larger than the resource requested.
Moreover, some CMS run their content research process (in the database) in an attempt to retrieve the requested page. This results in the server code being run, the server’s database accessed and the HTML page being dynamically generated. All these processes waste CPU power, RAM and bandwidth.

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Design #5

Choose a design that is simple, clear and tailored to the web

Use the features offered by HTML5 and CSS3 to design a website. It is important that you do not attempt to build a website without first taking into account technical constraints.

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With the support of


The collaborative approch of ecometer tool's creation has been supported by ADEME Bourgogne Franche-Comté within the scope of the 2015 call for projects about Circular Economy.


AER Atol Conseils & Développements Cadoles

Logomotion Planet Bourgogne Pulsar DS Bourgogne Franche-Comté Numérique