Lighter, Slower, Honest: What Low-Carbon Design Looks Like When You Actually Mean It

We have a mild professional allergy, and it flares up every time we see a new brand identity described as sustainable because the palette is green and there's a hand-drawn leaf in the corner.

That's not a criticism of anyone's taste. It's a criticism of a habit the whole sector shares: treating environmental commitment as something you express rather than something you do. A logo can't offset anything. A website can.

The claim is the easy part — and the riskiest

The UK has been fairly clear about this. The Competition and Markets Authority's Green Claims Code sets out six principles for environmental claims, and the general thrust is simple: if you say it, you should be able to prove it, in plain language, across the whole life of the thing you're selling or promoting. Since the Digital Markets, Competition and Consumers Act 2024 came into force, the CMA has had direct enforcement powers rather than having to go through court — a change that landed in April 2025 and one that has made vague eco-language a genuine legal risk rather than a PR one.

Charities aren't automatically in the clear. If you sell anything, run a shop, promote a product, or make claims to donors about the environmental impact of a partnership, the same test applies. Words like sustainable, eco-friendly, greener and carbon neutral are exactly the kind of broad, unevidenced claims the guidance warns about.

Which is why our advice is boring on purpose: claim less, do more, and describe what you did in specifics. We switched our hosting provider and here's the certificate is worth ten times more than a badge nobody can verify.

The heaviest thing on your website is probably a photograph of a field

Here's a number that surprises most people: images usually account for the majority of the bytes on a typical charity homepage. Not the code. Not the fonts you spent a fortnight choosing. The photos.

A single uncompressed hero image can weigh more than the rest of the page combined, and it's served to every visitor on every visit, on connections that are often mobile and often metered. Heavy pages don't just emit more; they exclude people on older devices and patchy rural broadband, which is a social design problem as much as an environmental one.

The fixes are unglamorous and cheap:

• Compress and resize images before upload, and serve modern formats.
• Use system or variable fonts rather than loading five weights of a display face.
• Set a budget for page weight and check it quarterly.
• Treat autoplaying video as a last resort, not a default.
• Question every third-party embed — the map, the chat widget, the four tracking scripts nobody can name.

None of this requires a new brand. It requires someone with access to the CMS and twenty minutes.

Hosting is your quietest climate commitment

Most organisations have no idea where their website physically lives, which is a strange thing to be relaxed about. It's worth a direct email to your provider: where are your servers, what's your energy mix, do you publish anything verifiable?

The Green Web Foundation maintains a public directory of providers that run on green energy, and it takes about five minutes to check yours. Migration is rarely as painful as people fear, and for many small sites it's a straightforward switch. If you're re-platforming anyway, make it part of the brief. If you're not, ask the question regardless — providers notice when clients ask.

Print: the decisions that matter aren't the paper stock

We love a nice uncoated recycled stock as much as anyone. But the paper is a rounding error next to the volume.

The environmental cost of print is dominated by how much you print, how far it travels, and how much of it gets binned unread. So the useful questions are: do we need 2,000 of these, or would 600 plus a good PDF serve better? Could this be six pages instead of sixteen? Are we mailing a stack of leaflets that will arrive after the event? Is there a version we could hand out digitally at the door?

Where you do print, keep it purposeful: fewer pages, less ink coverage, no plasticky laminates if you can avoid them, and a printer who will tell you honestly what their certifications mean rather than just listing them. Ask for the FSC or recycled content evidence and read it. Ask what happens to overs.

And a small plea: stop printing annual reports at scale for people who will read them on a phone. Print a short summary for the people who genuinely want paper. Everyone wins, including your postage budget.

Restraint is a design decision, not a deprivation

The single most effective low-carbon move in brand work is also the most creatively interesting: use less. One strong photograph instead of nine average ones. A short, well-edited film instead of a two-minute montage that nobody finishes. A type system that does the work through hierarchy rather than decoration.

Restraint makes brands clearer. It also makes them lighter. Those two things turn out to be the same discipline, which is a convenient truth we'd like to see more studios say out loud.

A short audit you can run over a couple of afternoons

• Check your homepage weight in a browser's developer tools. Note the number and the date.
• Find your five largest images. Compress, resize, or replace them.
• List every third-party script and embed. Remove or defer anything you can't justify in one sentence.
• Email your hosting provider the three questions above, and check the Green Web Foundation directory.
• Read your own website copy for environmental claims. Highlight anything you couldn't evidence in a paragraph.
• Count your print runs for the last twelve months. Identify one you could halve.
• Ask your printer for the actual recycled or certified content of your house stock.
• Add a line to your brand guidelines: new imagery must be compressed before upload.

Direction of travel, not a purity test

We're not going to pretend our own house is perfectly in order. Laptops have embedded carbon. Studios fly places. Nobody in this sector gets to declare themselves finished.

The realistic goal is momentum with honesty attached: fewer bytes this year than last, one fewer print run, a hosting provider you can actually name, and claims you'd be comfortable defending to a regulator, a funder, or a sharp-eyed beneficiary.

That's what purposeful design means when the planet is genuinely in the brief. Not a leaf on the logo. A shorter list of things you decided not to make.