Helping Unilever make their website more sustainable

Project overview

Global consumer goods company Unilever approached us in early 2023, to help them assess and improve the environmental impact of their website, unilever.com

The main goals of this collaboration were to quantify the website’s annual carbon footprint, review the design and code of high-traffic and environmentally impactful pages and provide recommendations for optimising the website’s efficiency and sustainability.


  • In-depth Website Carbon audit
  • Digital Sustainability report and recommendations


8,905 kg

Annual CO2 emissions


Annual kWh energy consumption


Av. carbon footprint per page view

Website Carbon audit

To accurately measure the website’s carbon emissions, we conducted a comprehensive Website Carbon Audit. 

Screenshot of the overview from the Digital Sustainability presentation to Unilever. The figures are as detailed above.

Our advanced methodology involved crawling the entire unilever.com website and integrating real-time data from Google Analytics. This approach ensured the accuracy of our findings and provided a detailed overview of the website’s carbon impact.

Design & Development Review

Following the Website Carbon Audit, we focused on reviewing the design and code of the most carbon heavy, and the most frequently visited, pages. 

Side by side screenshots of the website carbon scores, before and after the Unilever team removed a video from the homepage.

Our team of design and development experts performed a thorough assessment, identifying areas where improvements could be made to enhance efficiency, user-friendliness, and sustainability. 

This in-depth review formed the basis we needed to create a list of actionable recommendations for the Unilever team.

Digital Sustainability Findings

Once our analysis and review were complete, we arranged a comprehensive presentation for the Unilever teams, including both their communications and technical teams. 

A interactive chart from the Unilever Digital Sustainability report. The blue dots on the chart show the details of each page including the carbon emissions, on hover.

Led by our Senior WordPress Developer, the presentation began with an introduction to the concept of digital carbon emissions and sustainable web design. 

We then presented our findings on selected pages from Unilever’s website, highlighting areas for improvement and showcasing the existing positive aspects of their website optimisation efforts. 

Interested in greening your own website? 

We love helping organisations review their websites and decrease their digital carbon footprint. 

Sustainable web design can be straightforward. As long as you know how to measure your emissions and what to measure, all it requires is close attention to detail, and support to identify zero waste solutions.

Our team is continuously coming up with new solutions and carbon reduction methods, which we’re excited to share with you, to support your digital sustainability efforts. If you would like support with making your website more sustainable, do get in touch to arrange a call with our Digital Sustainability team. 

Wholegrain provided the Unilever.com team with straightforward, actionable improvements to decrease the carbon footprint of Unilever.com. A recommended change to our homepage resulted in a significant improvement in the carbon score of this page.

Katherine Attoe, Unilever

Katherine Attoe