See the carbon cost of
what you buy
Better Cart reads product pages and surfaces the CO₂ footprint of what you're buying — then suggests greener alternatives. Works on any site. Free.
Three steps, zero effort
Install once
Add Better Cart to Chrome or Firefox in one click. No account required.
Browse normally
When you visit a product page, Better Cart detects the carbon footprint automatically.
See greener options
A banner shows the CO₂e score and up to 3 lower-footprint alternatives.
Always a score, never a guess
When a product carries verified Footprint Protocol tags, Better Cart reads the exact lifecycle CO₂e. When it doesn't, our standardised three-tier estimation protocol derives a best-guess from material composition, product weight, and origin signals.
Every score shows its source: Verified for tagged products, Estimated Tier 1/2/3 for everything else.
29.4 kg CO₂e
Lifecycle · 30% below category average
~42 kg CO₂e
Weight-scaled category average
Real impact, tracked live
Better Cart users have already saved
—
kg CO₂e avoided
through greener choices
—
greener alternatives
clicked by real shoppers
—
shoppers who made
a greener choice
Impact is measured every time a shopper clicks a recommended alternative. CO₂e saving = baseline footprint − chosen alternative footprint. Methodology →
Tag your products. Get a verified score.
Products that carry Footprint Protocol meta tags get a verified CO₂e badge — not an estimate. Verified products rank higher in Better Cart's alternatives suggestions and build buyer trust. Add four lines to your product pages to get started.
Without fp: tags
~42 kg CO₂e
Based on weight × category average
With fp: tags
29.4 kg CO₂e
Exact lifecycle data you provided
- ✓ Verified badge — buyers see your real data, not a guess
- ✓ Higher placement — verified products rank first in alternatives
- ✓ Adoption recognition — your domain appears in our open detection registry
Add to your <head>
<meta property="fp:product" content="Your Product Name" />
<meta property="fp:co2e" content="12.4" />
<meta property="fp:co2e:unit" content="kg" />
<meta property="fp:scope" content="lifecycle" />