Certificate

The Carbon.Crane team certifies that the

website’s carbon emissions are measured and analyzed with the Website Carbon Monitor. The badge is proof that the creators and operators of the website share Carbon.Crane’s mission: reducing the digital carbon footprint.

CS239211
ISO 14 067

CARBON & ENERGY

MONITORED WEBSITE

05/13/2022

The data determined during the analysis per page view:

0.07 CO2E

0.38 WH

0.68 ML

Badge
number:

CS239211

Certificate
issue date:

05/13/2022

Assessed period:

03/31/2022 -
12/31/2025

Issuer:

Carbon.Crane

Standard
applied:

ISO 14067

ISO certificate issuer
and number:

Bureau Veritas

REPORT ID: 9108587

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The badge provided by Carbon.Crane displays the carbon emissions, energy consumption, and estimated water footprint of a given webpage or entire website, determined through an analysis conducted with its ISO 14067:2019-compliant measurement tool.
Based on the size of the website’s elements (text, images, video, code), we estimate the energy required for servers, data transmission, and user devices during rendering.
WUE (Water Usage Effectiveness) measures how many liters of water a data center consumes on average to supply 1 kWh of IT energy (e.g., for cooling).
The energy consumption of the website is multiplied by the industry average WUE value.
As of August 2025, the global average is ≈ 1,8 liter/kWh
(Source: DataCenterKnowledge)
Important: this is an average; actual water usage may differ depending on region and technology.
Carbon footprint is determined by the carbon intensity of the country’s energy mix – i.e., how much CO₂e is emitted per kWh of electricity generated. Example of carbon intensity variations: electricitymaps.com.
An increasing number of services offer website carbon footprint measurement, yet their results often differ significantly, making it difficult to judge accuracy. Carbon.Crane’s MSZ EN ISO 14067:2019-compliant measurement tool was created to shift the focus from methodological inconsistencies and accuracy issues to optimizations that genuinely reduce emissions.
Carbon.Crane is a startup dedicated to measuring and reducing the digital carbon footprint. We believe that making digital infrastructure more efficient results in greener operations across carbon emissions, energy use, and water consumption alike. Faster websites also improve user experience and enable AI-friendly interfaces.
The five categories indicate different levels of emissions and consumption, similar to labeling used for electronic devices:
1,0 g CO2e + - excessive emissions; additional issues (slow loading, high energy use) are likely
0,8 - 1,0 g CO2e - emissions should be reduced; high probability of excess
0,6 - 0,8 g CO2e - emissions should be reviewed; strong potential for reduction
0,4-0,6 g CO2e - higher than desired but acceptable; reduction opportunities should be explored
0 - 0,4 g CO2e - low emissions; exemplary best practice
The timestamp on the badge indicates when the respective assessment - scan, audit, or monitoring - was conducted.
A Carbon Audit measures the full carbon emissions and energy demand of a website over a given period. The badge certifies successful completion of this assessment. In addition to CO₂e emissions, energy use, reduction potential, and recommended areas of focus become visible. The audit only requires anonymous web analytics data from the client. Results are delivered as a PDF report and a consultation.
Carbon Monitoring provides continuous measurement and supervision of a website’s carbon emissions and energy demand over time. The badge certifies its implementation. Monitoring includes constant observation, regular reporting of CO₂e data, and alerts for anomalies. We also provide tools to support carbon- and energy-efficient content creation for new pages. The process only requires anonymous web analytics data from the client. Results are delivered as a PDF report and a consultation.
A Carbon Scan acts as a carbon map, showing the per-page-load emissions of the pages belonging to a website. The badge certifies successful completion of this analysis. Alongside CO₂e emissions, energy use and reduction potential with suggested focus areas are displayed. The scan only requires the client to provide the website’s sitemap. Results are delivered as a PDF report and a consultation.
 

How can I get the badge?

To display the badge on your website, you’ll need to use one of our services: Carbon Monitor, Carbon Audit, or Carbon Scan. These solutions make it possible to measure the carbon emissions of your pages—or your entire website—and even track them continuously. Get in touch with us to learn which service and which certificate is the best fit for you.

Website Karbon Monitor
 

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Carbon-reduced website = better user experience

The image above shows two previous versions of the main page of carboncrane.io. What happened between the two versions? The difference may not be so obvious at first glance, but we reduced the carbon footprint of the original website to its seventeenth part by the time Carbon.Crane was launched. Let us show you how we achieved it.

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