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 #32

Keep DOM access via JavaScript to a minimum

Accessing the DOM (Document Object Model) via JavaScript is a heavy process that uses a lot of processor power (CPU). Minimize this type of access as much as possible.
To do so, you can assign a node to variables that you will repeatedly use in the application’s lifecycle, which avoids traversing the tree each time the document is manipulated.
Libraries such as ‘Shadow DOM’ can also be used to optimize the tree though a batch system.

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Design #1

Choose the most suitable technology

The choice of technology is key to optimizing resources; choose the most eco-friendly tool that fits the purpose and meets all the needs.
Here are the five largest families of solutions available, in descending order of eco-friendliness. - Static website (created with specialist software such as Dreamweaver, or a code editor) - Generated website (e.g. using Jekyll, a tool in Ruby that, amongst other things, can process templates and construct permalinks) - Custom-built dynamic website (with PHP, J2EE, .NET, etc.) - Custom-built dynamic website using a framework (such as Symfony) - Dynamic website developed using a CMS (such as Drupal, Joomla!, Jahia, etc.). The more the solution is ‘packaged’, the more abstraction layers are stacked, hampering performance.

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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