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CarbonlessBeta

Carbon report

herdr.dev

Scanned · all pages on herdr.dev

0.026 g

cleaner than an estimated 96.7% 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

287 kBcold load, on the wire
204 domains
85 kB3 requests
12 kB4% re-downloaded
0.035 g CO₂e
0.0014 g CO₂e
verified green
236 ms
0.032
50 ms

At 10,000 views a month this page emits about 3.2 kg CO₂e a year, roughly 13 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 → ~0.022 g/visit, rating A+

  1. Audit third-party servicessave ~0.0039 g/visit (43 kB)Medium impact · moderate effort

    2 third-party domains account for 85 kB (30% of the page).

    Remove services that no longer earn their place; load the rest on interaction (facades for embeds, delayed consent-gated tags). Each third party is also a privacy and performance dependency.

    • fonts.gstatic.com84 kB
    • fonts.googleapis.com1.3 kB
    WSG 3.5: Treat third parties the same as first parties

Where the bytes are

  • Fonts115 kB · 3 req
  • Data (fetch)114 kB · 2 req
  • CSS26 kB · 3 req
  • Images19 kB · 10 req
  • HTML12 kB · 1 req
  • JavaScript934 B · 1 req
Ten heaviest requests
ResourceTypeWire sizeCache-Control
assets.herdr.dev/plugins/index.jsonfetch111 kBpublic, max-age=300, s-maxage=1800, stale-while-revalidate=3600
fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7.woff2font49 kBpublic, max-age=31536000
fonts.gstatic.com/s/archivo/v25/k3kPo8UDI-1M0wlSV9XAw6lQkqWY8Q82sLydOxI.woff2font35 kBpublic, max-age=31536000
herdr.dev/assets/jbm.woff2?v=2font31 kBpublic, max-age=604800, immutable
herdr.dev/css/style.css?v=59stylesheet16 kBpublic, max-age=14400, must-revalidate
herdr.dev/document12 kBpublic, max-age=0, must-revalidate
herdr.dev/css/site.css?v=64stylesheet9.1 kBpublic, max-age=14400, must-revalidate
herdr.dev/assets/agent-icons/hermes.svgimage9.0 kBpublic, max-age=604800, immutable
assets.herdr.dev/stats/stats.jsonfetch3.3 kBpublic, max-age=60, s-maxage=300, stale-while-revalidate=60
herdr.dev/assets/ram.svgimage1.6 kBpublic, max-age=604800, immutable

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Live carbon badge preview
<a href="https://carbonless.cc/report/herdr.dev"><img src="https://carbonless.cc/api/badge?url=https%3A%2F%2Fherdr.dev" alt="Carbon rating for this page" width="150" height="30" loading="lazy" /></a>

The badge is a lightweight SVG (under 1 kB) served with long-lived caching, so a new scan can take up to a day to show through.