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.

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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:

Development #26

Use functions instead of strings as the argument of setTimeout() and setInterval()

Functions or character strings can be passed as arguments to SetTimeout() and setInterval(). In keeping with the previous best practice, using eval() and thus passing character strings is not recommended. Furthermore, if the argument passed is a string, it has to be evaluated by the interpreter before being converted into code. On the other hand, if this argument is a function or a reference to a function, no evaluation is needed, reducing CPU usage.

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Development #38

Use anonymous functions

JavaScript allows for anonymous functions, and these should be used whenever possible without putting the project’s maintainability at risk. This way, the interpreter no longer needs to resolve the function’s name.
Be aware that this is only good practice when the function is used once. Any function used more than once should be named.

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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