Analyse your website’s full carbon footprint
Get full access to the Digital Carbon Online for two months enabling you to calculate the full carbon footprint of your website as viewed by your visitors.
- Automatically calculate your website’s entire CO2 footprint – beyond simply testing individual pages.
- Support climate and carbon reporting obligations.
- Develop a baseline ahead of website upgrades or optimisation.
- Re-assess against previous baselines.
- Discover which pages contribute to the highest carbon emissions.
- Deep-dive into pages to understand why they have higher carbon footprints.
- No subscription fees, once-off payment, two months of auditing.
Start your 2-month website carbon footprint audit today.
Choose between the Small, Medium or Large options based on the approximate number of pages on your website.

Start here 👉 Choose your website size.
Zero commitment | One payment | Two months of auditing
Why do a website carbon footprint audit?
Most organisations are unaware of the entire carbon footprint of their website.
Even though individual pages might contribute only a fraction of a gram of CO2 per visit, this can easily escalate to 100kgs per month when counted over time and combined with the number of times these pages are viewed.
Why two months?
Website carbon footprints vary over time based on your visitor’s viewing behaviour. Testing your site over two months enables you to capture and understand some of that variability.
Automated Website CO2 Audit
What to expect?
Once installed, Digital Carbon Online will begin to compile data about your site. Through your own personal dashboard you’ll begin to see how your website carbon footprint builds over time.
After two months you will see which pages are causing the most emissions, how these vary between the months and how your site compares to other.
You’ll be able to dig deeper into your pages identifying areas of concern, such as large unoptimised images or videos, excessive website code or 3rd party libraries.
You’ll even have access to tips and tricks to help you make improvements.
Do you re-test pages?
Yes. It is important to understand how each page changes over time.
Digital Carbon Online retests every viewed page of every website. To avoid artificially over-indexing websites, this is limited to retesting once every 60 to 70 days.
Is there an ongoing commitment?
Simply put, no.
After two months we’ll stop collecting data but you’ll still have access to your dashboard and data for up to 12 months. Of course, you might choose to run another audit or to subscribe to an ongoing package, but that’s up to you.