Skip to content
CarbonlessBeta

Carbon report

biomejs.dev

Scanned · all pages on biomejs.dev

0.027 g

cleaner than an estimated 96.6% 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.

Sign in to re-scan
What the browser rendered, so you can confirm a real page was measured.

The numbers

245 kBcold load, on the wire
232 domains
0 B2 requests
148 B0% re-downloaded
0.036 g CO₂e
<0.001 g CO₂e
unknown
456 ms
n/a
240 ms

At 10,000 views a month this page emits about 3.3 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 0%, and world-average grid intensity. How we calculate this

What to fix

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

  1. Convert and compress imagessave ~0.0070 g/visit (63 kB)Medium impact · quick fix

    1 image (140 kB) ship in legacy formats (JPEG/PNG/GIF).

    Serve AVIF (or WebP) with responsive srcset sizes, and re-compress oversized files. AVIF typically halves JPEG weight at the same visual quality.

    • vscode-extension.DakwLKND.png140 kB
    WSG 2.9: Optimize media to reduce resource use
  2. 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
  3. Simplify the document structureAdvisory · larger effort

    The page renders 1560 DOM elements, above the 1,500 guideline. Large trees cost memory and CPU on every visitor's device.

    Flatten wrapper markup, render long lists virtually or paginate, and prefer semantic elements over nested divs.

    WSG 3.6: Ensure code follows good semantic practices

Where the bytes are

  • Images173 kB · 12 req
  • JavaScript28 kB · 5 req
  • CSS24 kB · 5 req
  • HTML20 kB · 1 req
Ten heaviest requests
ResourceTypeWire sizeCache-Control
biomejs.dev/_astro/vscode-extension.DakwLKND.pngimage140 kBpublic,max-age=31536000,immutable
biomejs.dev/_astro/ui-core.C2azTrwe.js?dpl=6a7f1c2cfd7c3e0008324a86script24 kBpublic,max-age=31536000,immutable
biomejs.dev/document20 kBpublic,max-age=0,must-revalidate
biomejs.dev/_astro/middleware.CfaCPtw7.cssstylesheet14 kBpublic,max-age=31536000,immutable
biomejs.dev/_astro/[email protected]_h3Imx.webp?dpl=6a7f1c2cfd7c3e0008324a86image7.1 kBpublic,max-age=31536000,immutable
biomejs.dev/_astro/[email protected]__a0_V4kmz.webp?dpl=6a7f1c2cfd7c3e0008324a86image6.1 kBpublic,max-age=31536000,immutable
biomejs.dev/_astro/logo-netlify-large-fullcolor-lightmode.DuS16zEH_1L6VMf.webp?dpl=6a7f1c2cfd7c3e0008324a86image6.1 kBpublic,max-age=31536000,immutable
biomejs.dev/_astro/logo-netlify-large-fullcolor-darkmode.DYuMrqIH_Z1NLDgx.webp?dpl=6a7f1c2cfd7c3e0008324a86image4.4 kBpublic,max-age=31536000,immutable
biomejs.dev/_astro/ec.w907h.cssstylesheet4.0 kBpublic,max-age=31536000,immutable
biomejs.dev/_astro/FeaturedUsers.CIisVEpI.cssstylesheet2.9 kBpublic,max-age=31536000,immutable

Share this report

Live carbon badge preview
<a href="https://carbonless.cc/report/biomejs.dev"><img src="https://carbonless.cc/api/badge?url=https%3A%2F%2Fbiomejs.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.