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:

Hosting #21

Optimize bitmaps

Bitmap images often constitute most of the bytes downloaded, just ahead of the CSS and JavaScript libraries. Optimizing them thus has a considerable impact on the bandwidth consumed. The first step is to choose the correct format between bitmap (e.g. JPEG, PNG & GIF) and vector (SVG).
Bitmaps should really only be used for photos and interface elements that are not possible though icons or CSS styling.
The choice of bitmap format depends on the image’s characteristics: black and white or color, color palette, need for transparency, etc. For these characteristics, the ability to use lossy compression on the image is more suited to JPEG and WebP (Google); while the need for transparency and/or lossless compression is more suited to GIF or PNG.
Tools such as pngcrush, ImageMagick and jpegtran will help you reduce the size of images as much as possible.

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Development #56

Only connect to a database if necessary

Triggering a connection to a database server is resource intensive for the application server, the database server, and, potentially, for the network. Do not use the database if the application doesn’t need it.

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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