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CarbonlessBeta

Carbon report

carbonless.cc/report/carbonless.cc

Scanned · all pages on carbonless.cc

0.029 g

cleaner than an estimated 96.3% of pages on the web 

  1. A+
  2. A
  3. B
  4. C
  5. D
  6. E
  7. F

A+ is 0.04 g or less per view, F is more than 0.359 g CO₂e.

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What the browser rendered, so you can confirm a real page was measured.

The numbers

318 kBcold load, on the wire
271 domains
0 B0 requests
14 kB4% re-downloaded
0.039 g CO₂e
0.0017 g CO₂e
verified green
264 ms
n/a
89 ms

At 10,000 views a month this page emits about 3.5 kg CO₂e a year, roughly 14 km in an average petrol car. The estimate assumes 75% new and 25% returning visitors, a measured cache reload ratio of 4%, and world-average grid intensity. How we calculate this

What to fix

apply everything → ~0.020 g/visit, rating A+

  1. Reduce JavaScript payloadsave ~0.0056 g/visit (60 kB)Medium impact · moderate effort

    14 scripts total 241 kB on the wire (744 kB decoded). Bundles this size usually carry a lot of unused code.

    Split bundles per route, tree-shake dependencies, and audit with a bundle analyzer or coverage profile. A 25% cut is a conservative target for bundles this size.

    • 08ttfj81-47mu.js72 kB
    • 0wonam-vii-qp.js44 kB
    • 2-xd4eotmu2l9.js36 kB
    • 43ntg-xs81qkn.js19 kB
    • 0c-us8uhd428w.js14 kB
    WSG 3.2: Minify and remove unused codeWSG 3.3: Modularize bandwidth-heavy components
  2. Upgrade compression beyond gzipsave ~0.0035 g/visit (38 kB)Advisory · quick fix

    256 kB of text ships gzip-compressed; Brotli or Zstandard would cut roughly another 15-20%, and browsers without them fall back to gzip automatically.

    Serve precompressed Brotli for static text assets (highest level, compressed at build time) and enable Brotli or zstd for dynamic responses; keep gzip only as the fallback.

    • 08ttfj81-47mu.js72 kB
    • 0wonam-vii-qp.js44 kB
    • 2-xd4eotmu2l9.js36 kB
    • 43ntg-xs81qkn.js19 kB
    • 0c-us8uhd428w.js14 kB
    WSG 4.3: Reduce data transfer with compression

Where the bytes are

  • JavaScript241 kB · 14 req
  • Fonts30 kB · 1 req
  • Images18 kB · 2 req
  • HTML13 kB · 1 req
  • CSS13 kB · 1 req
  • Data (fetch)2.9 kB · 8 req
Ten heaviest requests
ResourceTypeWire sizeCache-Control
carbonless.cc/_next/static/chunks/08ttfj81-47mu.jsscript72 kBpublic, max-age=31536000, immutable
carbonless.cc/_next/static/chunks/0wonam-vii-qp.jsscript44 kBpublic, max-age=31536000, immutable
carbonless.cc/_next/static/chunks/2-xd4eotmu2l9.jsscript36 kBpublic, max-age=31536000, immutable
carbonless.cc/_next/static/media/caa3a2e1cccd8315-s.p.0wgildi0cnwt9.woff2font30 kBpublic, max-age=31536000, immutable
carbonless.cc/_next/static/chunks/43ntg-xs81qkn.jsscript19 kBpublic, max-age=31536000, immutable
carbonless.cc/api/screenshots/c37092bf-e68b-4e85-8091-90865b06a75fimage17 kBpublic, max-age=31536000, immutable
carbonless.cc/_next/static/chunks/0c-us8uhd428w.jsscript14 kBpublic, max-age=31536000, immutable
carbonless.cc/report/carbonless.ccdocument13 kBprivate, no-cache, no-store, max-age=0, must-revalidate
carbonless.cc/_next/static/chunks/3ltko0ljlntgd.cssstylesheet13 kBpublic, max-age=31536000, immutable
carbonless.cc/_next/static/chunks/1vcx4kgxcd8nm.jsscript12 kBpublic, max-age=31536000, immutable

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