How Small Businesses Can Have a Greener Digital Footprint

What is a digital footprint?
Switching off the lights when you leave a room, cycling to work instead of driving, bringing a reusable bag to the supermarket. We associate these kinds of actions with living more sustainably. Small, visible choices that feel like they add up.

What doesn’t make that list is deleting old emails, compressing an image, or switching web host. But I believe they should. The digital choices your business makes every day carry environmental implications, and affect your digital footprint – no matter how invisible they may be.

Here’s the good news: most of the changes that reduce your digital carbon footprint also make your business more efficient, your website faster, and your online presence more effective. This blog isn’t going to be me preaching at you from my oh so morally superior standpoint – I’m going to give you actionable steps you can take, to both make your business more environmentally friendly, but also improve your online presence.

Why Your Digital Footprint Has a Carbon Problem

The internet doesn’t feel physical. It’s the thing we access by poking at the razor-thin glass sheet we hold in our hands, the 8AM Teams meeting that really should’ve been an email. But behind every search, email, and website visit is a chain of physical infrastructure: undersea cables, server racks, fibre-optics, cooling systems, and the devices in your customers’ hands – all consuming electricity, and outputting heat.

The scale is nothing if not significant. The ICT industry is currently responsible for 2–4% of global greenhouse gas emissions. This is comparable to the entire commercial aviation industry. Every byte of data you create, store, and transmit sits somewhere in that total.

For SMBs, this hits in three main places:

1. Your website – every page load requires finding the right file at the server, sending it across the network, rendering it on your visitor’s device, and verifying that all went without a hitch.
2. Your email – storing, sending, and receiving email creates dark data (which we’ll go into more later!) – all of which has real environmental impacts.
3. Your data storage – files, folders, and databases accumulate on servers – and when these reach capacity, more servers and data centres need to be built.

That’s just a small handful of examples of how our data impacts everything. But each one represents an opportunity to reduce waste, cut costs, and build a better sustainability brand image. This is something that an increasing number of customers notice and value, to the point they’ll pay a 9.7% premium for it.

1. Cut Your Website’s Digital Footprint (Page Weight)

Your website’s single biggest environmental lever is how much data it forces visitors to download.

The average UK webpage now weighs around 4MB. A well-optimised page can deliver the same content and experience at under 200KB – a 20-fold difference in data transfer. That gap is 20 times more server energy, 20 times more network transmission, 20 times more processing load on your visitor’s device. And that’s for every single page view.

Common Digital Waste on Websites

Well, that’s all well and good said, but how do you actually get your site to be smaller? Below are some of the easiest fixes you can implement today. Even if you don’t go back through your site and fix these, just making these small changes for future pages can still have an impact.

• Uncompressed images – a hero image uploaded straight from a camera at full resolution can easily be 4–8MB on its own. Compressed and correctly sized, the same image can weigh under 100KB with little to no visible quality difference.
• Unused CSS and JavaScript – most website themes and page builders load code for features you won’t use. Your browser still needs to download and execute that dead code, slowing down your site, and wasting energy. You can use WordPress themes such as EcoCoded to help with this.
• Embedded video autoplay – autoplaying video is one of the heaviest things a webpage can do (as well as being annoying for your visitors!). You can replace it with a poster image and a play button, so it’s not loaded until it has to be.
• Too many pages – dead pages that won’t rank, serve nobody, and haven’t been updated in years still get crawled by search engines and occasionally loaded by visitors. Removing or consolidating them reduces both your carbon footprint and your SEO bloat.

Auditing Your Website Carbon Score

If you’re not sure what your site currently weighs, run it through Ecograder for a free carbon efficiency score. You can also use the Data Carbon Scorecard, developed by Loughborough University’s Digital Decarbonisation team, to benchmark your site against industry standards and identify your biggest areas of wastage.

If you’d like help with image optimisation, page consolidation, or a full site weight audit, Key2.com’s website services include all of the above as standard.

2. Think Before You Send (and Store)

Email is one of those things that feels free. You can get a free email from millions of sites, sending an email to yourself as a quick note takes seconds, and companies/spammers seem happy to send you hundreds a day. But every email you send requires energy across your device, the routing network, and the destination server, before sitting on that server consuming storage indefinitely.

The footprint varies considerably by type:

The Digital Footprint Impact of Unnecessary Emails

A 2019 study found that UK adults send over 64 million unnecessary emails every day. Simple one or two word replies like “thanks” or “received.” If every UK adult sent just one fewer of these each day, it would save over 16,000 tonnes of carbon annually.

Practical Steps for Smarter Communication

For small businesses, the practical steps are straightforward:

• Use SMS/instant-messaging for quick internal exchanges – a Slack message or Teams ping handles short-burst communication more efficiently than email – although it’s not perfect! A Teams message still uses 0.05-0.06g CO2e – better than the 0.3g CO2e for email, but still more than an SMS – which only has 0.014g CO2e!
• Don’t attach files you can link to instead – sharing a Google Drive or Dropbox link rather than attaching a PDF reduces useless copies of data. It also ensures data is easier to retract in-case it’s sent to the wrong person!
• Make a habit of clearing out old files – your spam folder, sent items, and inbox all consume server storage. A quarterly/monthly clear-out keeps your data usage lower (these can often be automated!).
• Archive data – data that isn’t actively needed but must be retained should sit in cold storage, not on active servers. This means it will be stored on cheaper, slower servers. Which won’t be an issue if you only need to access it every so often!

3. Choose a Host That’s Green

Where your website is hosted has a significant impact on its carbon footprint. Data centres vary enormously in how efficiently they use energy and where that energy is coming from.

When evaluating hosting providers, it’s worth understanding the difference between the types of “green” claims you might encounter:

Green Claim Types

Verifying Your Host is Green to Reduce Your Digital Footprint

The Green Web Foundation maintains a public database of verified green hosts. You can plug in your URL to check if your provider is on their database. If they aren’t, you may wish to consider switching.

Switching to a verified green host can reduce your site’s operational emissions by 62–90% without making any other changes. Alongside page weight optimisation, it’s the single highest-impact digital action most small businesses can take.

Green hosts are often also faster and better than those not. Sustainability relies on energy efficiency. The newest and best hardware is often more energy efficient and faster, such as NVMe SSDs and newer CPUs. Many also use advanced, light-weight software stacks (like LiteSpeed servers) which can handle multiple concurrent connections with less energy.

4. Tackle Your “Dark Data”

Researchers at Loughborough University’s Digital Decarbonisation team estimate that 80% of all emails are never opened. Yet, they remain stored on energy-consuming servers indefinitely. Organisations refer to this accumulation of unused, unread, and never-accessed data as “dark data”. This is information that serves no purpose, yet still consumes energy and resources to maintain.

Where Dark Data Lives

For small businesses, dark data tends to live in a few places:

• Old email threads and attachments – years of correspondence sitting in inboxes that nobody will read again.
• Duplicate files – multiple versions of the same document saved across Dropbox, Google Drive, and a local hard drive.
• Outdated website pages – such as service pages for offerings you no longer provide, old landing pages from discontinued campaigns, and unused blog posts.
• Unused form submissions and CRM contacts — collected data that you have never acted on and never will.

The Security Benefits of Digital Cleansing

Deleting dark data also comes with security and compliance benefits. Dark data is a security risk – retaining massive volumes of unmonitored dark data increases an organisation’s vulnerability to cyberattacks and data breaches. By deleting potentially sensitive dark data securely, you ensure that you won’t be storing it in a non-compliant fashion.

Identifying and deleting dark data is the digital equivalent of turning off the lights in an empty building. Tools like Loughborough’s Digital Decarb Readiness Tool and Digital Efficiency Index can help you assess where your organisation currently sits on the spectrum.

5. Build Your Digital Footprint Into Your Marketing Story

There’s an economic side to all this that’s worth noting.

Sustainable business credentials increasingly influence purchasing decisions, particularly among younger consumers and within B2B relationships where partners scrutinise corporate social responsibility. A business that can say “our website runs on verified green hosting and has a carbon footprint of X grams per page view” is saying something measurable and credible – far better than the greenwashing and unverifiable “we care about the planet.”

Being authentic and verifiable is so important, in all sectors of life. It’s something I talk about when it comes to writing CV’s for graduates, but it also applies to businesses trying to sell to people. If you can’t make a claim, evidence it, then stand by it, why should anyone trust you or your service/product? Consumers want to be able to identify themselves with your brand. One of the easiest ways to support that is through shared values.

The businesses best positioned to make that claim actually care, and have made these changes. Whether they compress images, remove dead pages, use a verified host, or take steps to eliminate dark data, these aren’t baseless gestures. You can make these changes to improve your digital presence.

If you’d like help measuring your current digital footprint and building a sustainable web presence that you can talk about, get in touch with me.

Where to Start Fixing Your Digital Footprint

If you’re not sure where to begin, here’s a simple priority order:

• Run your site through Ecograder – it’s free!
• Check your host on the Green Web Foundation database – again, free! If the database doesn’t list them, consider switching.
• Audit your images – compress everything that doesn’t need to be full-size
• Delete emails you know you won’t open again – make it a habit to remove dark data!
• Remove one dead page from your website – the first one is the hardest!

None of these require a significant time investment. Collectively, they’ll move your business in the right direction, and give you something to talk about!