Ecometer - Analyse your website's ecodesign maturity.

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.

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

Development #17

Use conditional comments

If some resources should only be sent to specific browsers, use conditional comments to avoid them being loaded unnecessarily by the other browsers.

Learn more about this best pratice

Hosting #80

Use ETags

An ETag is a signature attached a server response. If the client requests a URL (HTML page, image, style sheet, etc.) whose ETag is identical to the one it already has, the web server will reply that it does not need to download the resource and that it should use the one it already possesses. Using ETags saves huge amounts of bandwidth.