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 #42

Keep repaint (appearance) and reflow (layout) to a minimum

A repaint is a change in appearance of a DOM (Document Object Model) element, while a reflow is a change/recalculation of the position of the elements in the DOM. You should avoid triggering these two operations as they are resource-expensive, especially in terms of CPU usage.

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Design #204

Use input help instead of autocomplete

Autocomplete helps users by automatically completing text entered in a field. This feature can be very useful for avoiding errors or providing suggested searches, but it requires constant communication between the browser and the server (although the exchanges may be capped). The browser sends each new character or word entered to the server, which sends back the text to complete the user’s entry. While the volume of data may be very small, it is very demanding on the servers and network in terms of requests.
When possible, you should avoid this feature and replace it with input help. This involves guiding the user through a series of information points and hints (e.g. example of the required format in grey in the entry field, error message from the interface or help with incorrect entries). These interactions are managed locally, thus reducing exchanges with the server.

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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