Imprint and assumptions

Data collected from Google PageSpeed and The Green Web Foundation.

Rating is based on our internal rating system and may be changed in the future.

The CO2 score assumes that the visitor is a brand new visitor so no cache is enabled.

The CO2 score is lowered by 10% if hosted with a provider using renewable energy (or offseting it) as that is roughly the amount of energy used transmitting the data from the server to the network.

While Beacon checks your hosting provider; it cannot determine the difference between hosts using renewable energy or offseting their carbon footprint – this is down to the data source we are using (The Green Web Foundation) and will be monitored in case this data does become available.

All data saved is completely anonymous and private; it's only use is internally to monitor usage and help improve this product. We reserve the right to get in touch with site owners to offer additional services to help reduce the emissions caused by their website.

Design by Redwan El-Harrak.
Development by Chris Butterworth.

Inspired by Website Carbon, created by Wholegrain Digital and Ecograder by the team at Mightybytes


This application is built using Laravel and uses CloudFlare as a CDN; as part of these services 3 essential cookies are set.

These are:

A session cookie which can be used to save data used during a visit - this is unused and has no personal information stored
A cookie used to save a token to help with cross site requests - contains no personal information
Cookie set by CloudFlare to help with security - contains no personal information