We've made some big updates to carbon.txt thanks to funding from NGI Search.
Learn more in this blog post

Carbon.txt

carbon.txt makes sustainability data easier to discover and use on the web. Carbon.txt is a single, discoverable location on any web domain for public, machine-readable, sustainability data relating to that company.

[org]
disclosures = [
	{ doc_type = "web-page", url = "https://mycompany.com/sustainability", domain = "mycompany.com" },
	{ doc_type = "annual-report", url = "https://mycompany.com/carbon-emissions-2022.pdf", domain = "mycompany.com" }
]
	
[upstream]	
services = [
	{ domain = "cloud.google.com", service_type = "shared-hosting" },
	{ domain = "aws.amazon.com", service_type = "cdn" }
]

What is carbon.txt?

carbon.txt makes sustainability data easier to discover and use on the web. Carbon.txt is a single, discoverable location on any web domain for public, machine-readable, sustainability data relating to that company.

It’s a web-first, connect not collect style approach, of most benefit to those interested in scraping the structured data companies have to publish according to national laws. Designed to be extended by default, we see carbon.txt becoming essential infrastructure for sustainability data services crunching available numbers and sharing the stories it can tell.

Why do we need this?

The Green Web Foundation is oriented around the world reaching a fossil free internet by 2030. For this to be possible, the firms that make up large parts of the internet need to do two main things:

  1. Make clear public commitments to reduce their carbon emissions
  2. Follow through on their commitments with meaningful action.

Carbon.txt is our open-source project to make this sustainability information easier to discover. It is a spec that defines predictable, consistent places on any website to publish sustainability data so that both humans and machines can find it.