Website Carbon

Calculates website carbon emissions per page view using real-time tests. Provides endpoints for testing and manual calculations.

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No keyHTTPSNo CORSEnvironment

Verified today: 100% uptime

API key

Not required

HTTPS

Supported

Browser calls

No, needs a proxy

Status

Live · 100/100

Overview & Architectural Role

Website Carbon provides programmatic access to calculates website carbon emissions per page view using real-time tests. provides endpoints for testing and manual calculations. Delivered over secure HTTPS protocols, it exposes structured endpoints designed to integrate cleanly into modern frontend frameworks, backend microservices, and automated data pipelines without requiring local database provisioning.

Who it is built for

Engineers building web dashboards, mobile applications, CLI utilities, or background cron workers in need of reliable environment data feeds.

Architectural Advantage

Consuming Website Carbon removes the operational overhead of running custom scrapers, orchestrating headless browser fleets, or manually seeding and maintaining a local database. Instead of reverse-engineering volatile DOM layouts or dealing with anti-bot IP blocks, your application connects directly to a standardized JSON interface designed for backend ingestion with consistent schema schemas. Zero-authentication access allows rapid prototyping and zero-credential static deployments.

What our checks found

Health score: 100/100
Reliability: 100%
Average latency: 442ms

Last checked 2026-10-24. Measured independently, not self-reported by the provider.

Core Use Cases & Architecture Ideas

Practical real-world patterns for integrating Website Carbon into software systems.

Smart Environmental IoT Controller

Feed live atmospheric data from Website Carbon into microcontrollers to dynamically govern heating, cooling, or automated window actuators.

Architecture: Edge device or serverless cron polls Website Carbon every 15 minutes, compares ambient metrics with indoor telemetry, and triggers local relays.

Logistics & Delivery Route Optimization

Adjust dispatch schedules and estimated delivery times dynamically when adverse conditions impact transit zones.

Architecture: A Node.js/Go dispatch worker queries localized status codes along shipping waypoints, dispatching customer updates via webhooks.

Context-Aware Frontend Dashboard Widget

Render dynamic UI themes and localized weather cards tailored to the user's geolocated IP coordinates.

Architecture: React/Next.js frontend fetches telemetry client-side (or through a cached server route) to render live status indicators.

Code Implementation Examples

Production-ready starting templates with error handling for Website Carbon.

// No authentication required.
// Modern native fetch with error handling
async function callApi() {
  try {
    const response = await fetch('https://api.websitecarbon.com/api/v1/resource', {
      method: 'GET',
    headers: { Accept: 'application/json' },
    });

    if (!response.ok) {
      throw new Error(`HTTP ${response.status}: ${response.statusText}`);
    }

    const data = await response.json();
    console.log('Response payload:', data);
    return data;
  } catch (error) {
    console.error('API request failed:', error);
    throw error;
  }
}

// callApi();

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.

Response Payload & Live Testing

Inspect the expected JSON structure returned by Website Carbon.

Expected JSON Response Payload

Authentic sample payload structure to evaluate schema attributes before integration.

{
  "status": 200,
  "api": "Website Carbon",
  "endpoint": "/website-carbon",
  "data": {
    "id": 101,
    "title": "Website Carbon Sample Payload",
    "description": "Calculates website carbon emissions per page view using real-time tests. Provides endpoints for testing and manual calculations.",
    "verified": true,
    "category": "Environment",
    "updated_at": "2026-10-24T07:40:08.851Z"
  },
  "meta": {
    "response_time_ms": 442,
    "cached": false
  }
}

Format: application/json

Integration Considerations & Best Practices

Technical factors to keep in mind when integrating Website Carbon into production environments.

Implement In-Memory or Edge Caching

Avoid triggering rate limits on public feeds by caching response payloads in Redis, Vercel KV, or standard HTTP Cache-Control headers with a 5-to-15 minute TTL.

Zero-Credential Environment Protection

While no API key is required, public keyless pools often share global rate limits. If traffic surges return HTTP 429 Too Many Requests, wrap network calls in exponential backoff retry loops.

CORS Proxy Required for Browser Frontend Calls

This API does not send Access-Control-Allow-Origin response headers. Direct fetch() calls from browser JavaScript will fail due to Same-Origin Policy. Route your calls through a server backend or lightweight edge proxy.

Validate HTTP Status Before Parsing JSON

Always inspect response.ok before executing response.json(). Upstream services returning 4xx or 502 Bad Gateway often serve HTML error pages, which cause syntax errors when parsed as JSON.

Where this listing comes from

Open-Meteo is an open-source weather API and offers free access for non-commercial use. No API key required. Start using it now!

No keyCORSHTTPS

Verified today: 100% uptime

View Details

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 2026-10-24 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 2026-10-24. Our automated check reached Website Carbon and recorded a 100% reliability score with a median response time of 442 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.