DC Hub
Environment
Live data on data-center facilities, power markets, grid telemetry, and fiber infrastructure
No keyCORSHTTPS
Website Carbon
Calculates website carbon emissions per page view using real-time tests. Provides endpoints for testing and manual calculations.
Verified 4 days ago: 100% uptime
API key
Not required
HTTPS
Supported
Browser calls
No, needs a proxy
Status
Live · 100/100
What our checks found
- Health score
- 100/100
- Reliability
- 100%
- Average latency
- 99ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for Website Carbon. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# No authentication required.
curl -s "https://api.websitecarbon.com/ENDPOINT" \
-H "Accept: application/json"This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.
Where this listing comes from
Aggregated from 2 public sources (freepublicapis, public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
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Website Carbon — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is Website Carbon free to use?
Website Carbon is listed in our free catalogue and required no credential when we called it. It needs no authentication at all, so you can send a request without signing up. Free tiers can still carry rate limits or non-commercial terms, so check the provider's own terms before shipping.
Does Website Carbon need an API key?
No. We called Website Carbon on 2026-09-18 with no key, no token and no Authorization header, and it responded. That is what puts it in our no-key collection.
Can I call Website Carbon from browser JavaScript?
Not directly. Website Carbon did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.
Is Website Carbon still working?
Yes, as of 2026-09-18. Our automated check reached Website Carbon and recorded a 100% reliability score with a median response time of 99 ms. We re-check on a schedule, and this page updates with the result.
Is Website Carbon available over HTTPS?
Yes. Website Carbon serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.