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CarbonlessBeta

Carbon report

x.com

Scanned · all pages on x.com

0.017 g

cleaner than an estimated 97.9% 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

172 kBcold load, on the wire
52 domains
136 kB3 requests
32 kB18% re-downloaded
0.021 g CO₂e
0.0038 g CO₂e
verified green
464 ms
n/a
306 ms

At 10,000 views a month this page emits about 2.0 kg CO₂e a year, roughly 8 km in an average petrol car. The estimate assumes 75% new and 25% returning visitors, a measured cache reload ratio of 18%, and world-average grid intensity. How we calculate this

What to fix

apply everything → ~0.0066 g/visit, rating A+

  1. Audit third-party servicessave ~0.0065 g/visit (68 kB)Medium impact · moderate effort

    1 third-party domain account for 136 kB (79% 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.

    • abs.twimg.com136 kB
    WSG 3.5: Treat third parties the same as first parties
  2. Optimize web fontssave ~0.0046 g/visit (47 kB)Advisory · quick fix

    3 font files total 136 kB.

    Subset fonts to used glyphs, prefer one variable font over multiple weights, serve WOFF2 only, and consider system fonts for UI text.

    • Chirp-Bold.ebb56aba.woff246 kB
    • Chirp-Medium.f8e2739a.woff245 kB
    • Chirp-Regular.80fda27a.woff245 kB
    WSG 2.11: Use optimized web typography
  3. Remove references to broken resourcesAdvisory · quick fix

    1 request answered 4xx/5xx on load: transfer and connections spent on nothing, on every single visit.

    Delete or fix the references (stale asset URLs, dead third-party tags). Each one is a request the page provably does not need.

    • landingHTTP 404 · 0 B
    WSG 4.4: Setup necessary error pages and redirection links

Where the bytes are

  • Fonts136 kB · 3 req
  • HTML37 kB · 1 req
  • Other0 B · 1 req
Ten heaviest requests
ResourceTypeWire sizeCache-Control
abs.twimg.com/responsive-web/client-web/Chirp-Bold.ebb56aba.woff2font46 kBpublic, max-age=31385731
abs.twimg.com/responsive-web/client-web/Chirp-Medium.f8e2739a.woff2font45 kBpublic, max-age=31536000
abs.twimg.com/responsive-web/client-web/Chirp-Regular.80fda27a.woff2font45 kBpublic, max-age=31536000
x.com/document37 kBno-cache, private, must-revalidate, pre-check=0, post-check=0
x.com/i/jfapi/onboarding/web/landingother0 Bno-cache, private, must-revalidate, pre-check=0, post-check=0

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