Privacy Policy

The Green Web Foundation Privacy Policy

The Green Web Foundation (TGWF) is a foundation based in the Wagingen, in the Netherlands. We run this website (, and the sites on its subdomains.

This policy explains how we gather, and use data to provide our services, and understand how they are used.

Accessing our websites

Information collected automatically

When you use our websites we automatically collect information about your visit. This helps us understand how to improve our site and services. This data collection does not identify you personally.

We capture information such as your IP Address, operating system, screen display settings, browser type, and we use Matomo to collect this information (see the full list of what we collect).

This data is stored indefinitely, and we run this ourselves on our servers. No third parties have access to this data.

You can opt out this collection by turning on Do Not Track in your browser. Find out how to do this for Google Chrome, Firefox, Safari, Internet Explorer and Microsoft Edge.

Information you provide

We collect your email address, and a username when we create an account for you, so you can update info about hosting providers and datacentres. We use this to identify you, when signing in to make updates.

Using the Green Web Browser Extensions and Addons

When you use one of the Green Web browser plugins, the following information is sent to the Green Web API automatically:

  • the domain of the current page you are on – this shows if the current page runs on green power or not
  • the domain of any links on the page – this shows if sites linked to run on green power

Nothing else is sent to TGWF servers, and you can’t be identified by sending this data.

What is retained, and why

Once the information about the urls is returned to be displayed in your browser, we retain the following information:

  • the domains that were checked
  • the time of the check, at the resolution of the nearest minute

We use this to track changes to how servers behind a given domain name are powered, over time as part of our mission to speed a transition to an internet running on green power.

Since there is not a moment in the day that we have less then dozens different users per minute (on average around 20.000 checks per hour are carried out as we write) there is way to connect these sites to a certain user.

Nothing else is stored about the request, and nor anything that links a user to checking a specific domain.

Transparency and open source

We also publish the source code of as much software as we can in providing our services. You can find the source code for the API server used to carry out green checks, as well as the browser extensions for Firefox and Chrome, and for Safari. You can find out more about how Github use data in their privacy policy.

Other access data.

To help prevent abuse of our services , we retain access logs at the server level, for a period of 21 days. These record:

  • The time of the request
  • The request sent
  • The status
  • That type of device sent  (specifically, the user agent)

We track this to identify patterns in usage that may affect the ability for services to function – for example, if one user is making so many requests that it stops the API working for others.

After the retention period, we delete these logs.

Protection of Personally-Identifying Information

TGWF will not rent, sell or give away potentially personally-identifying and personally-identifying information to anyone.

TGWF takes all measures reasonably necessary to protect against the unauthorized access, use, alteration, or destruction of potentially personally-identifying and personally-identifying information.

Aggregated Statistics

TGWF may compile statistical data about the behavior of uses of the offered services.

For instance, TGWF may reveal how many downloads a particular version got, or say which versions or websites are most popular based on checks from, a web service used by the Green Web addons to check the greenness of websites.

None of these statements will however be linked to personally-identifying information in any steps of the aggregation process.