prismml.com

The numbers

First visit

0.054 g CO₂e

Return visit

<0.001 g CO₂e

Hosting

unknown

LCP

232 ms

CLS

0.009

TTFB

55 ms

At 10,000 views a month this page emits about 4.9 kg CO₂e a year, roughly 20 km in an average petrol car. The estimate assumes 75% new and 25% returning visitors, a measured cache reload ratio of 1%, and world-average grid intensity. How we calculate this

1. Audit third-party servicessave ~0.019 g/visit (169 kB)Medium impact · moderate effort

   6 third-party domains account for 337 kB (92% 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.

   • cdn.prod.website-files.com271 kB
   • d3e54v103j8qbb.cloudfront.net32 kB
   • challenges.cloudflare.com27 kB
   • cloud.umami.is3.4 kB
   • 1.9 kB
   • gateway.umami.is957 B

   WSG 3.5: Treat third parties the same as first parties
2. Reduce JavaScript payloadsave ~0.0058 g/visit (52 kB)Medium impact · moderate effort

   7 scripts total 207 kB on the wire (716 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.

   • webflow.schunk.c42549641b7d4501.js77 kB
   • webflow.schunk.2c63e4314bea84c6.js45 kB
   • jquery-3.5.1.min.dc5e7f18c8.js32 kB
   • api.js27 kB
   • webflow.schunk.36b8fb49256177c8.js14 kB

   WSG 3.2: Minify and remove unused codeWSG 3.3: Modularize bandwidth-heavy components
3. Verify your hosting energyMedium impact · moderate effort

   This host has not published renewable energy evidence with the Green Web Foundation, so its energy source is unknown.

   Choose a provider listed in the Green Web Directory, or ask your current provider to publish evidence (and a carbon.txt). This cuts the data-center share of every single page view.

   • carbon.txtNo carbon.txt found at the site root; publishing one is the lightest first step.

   WSG 4.1: Use sustainable hosting
4. Optimize web fontssave ~<0.001 g/visit (563 B)Advisory · quick fix

   4 font files total 70 kB, 1 not in WOFF2.

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

   • 6a2a46f3ebbe111ff74655e1_RethinkSans-SemiBold…24 kB
   • 6a2a46f3fb391612a33297cb_RethinkSans-Regular.…23 kB
   • 6a2a459085ff6a6261a08280_DMMono-Regular.woff221 kB
   • 9BAAAAAQAAAAFtwAAAAAAAAAKABQAHgAyAEYAjACiAL4B…1.9 kB

   WSG 2.11: Use optimized web typography

Where the bytes are

• JavaScript207 kB · 7 req
• Fonts70 kB · 4 req
• Images41 kB · 13 req
• HTML28 kB · 1 req
• CSS16 kB · 1 req
• Data (XHR)2.7 kB · 1 req
• Data (fetch)957 B · 1 req
• Other0 B · 1 req