0.187 g
cleaner than an estimated 73.4% of pages on the web
- A+
- A
- B
- C
- D
- E
- F
A+ is 0.04 g or less per view, F is more than 0.359 g CO₂e.
The numbers
- 0.249 g CO₂e
- 0.0019 g CO₂e
- unknown
- 1.22 s
- 0.004
- 172 ms
At 10,000 views a month this page emits about 22.4 kg CO₂e a year, roughly 92 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
What to fix
apply everything → ~0.109 g/visit, rating B
Convert and compress imagessave ~0.072 g/visit (644 kB)High impact · quick fix
1 image (1.43 MB) 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.
- exy.png1.43 MB
Enable text compressionsave ~0.0046 g/visit (41 kB)Medium impact · quick fix
3 text resources (59 kB) are served without gzip/Brotli.
Enable Brotli (or at least gzip) on the server or CDN for HTML, CSS, JavaScript, JSON and SVG. Typical reduction is ~70%.
- term-player.js26 kB
- index.css21 kB
- exe.dev12 kB
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.
Upgrade compression beyond gzipsave ~0.0017 g/visit (15 kB)Advisory · quick fix
100 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.
- 600-Ce9kNqBK.js63 kB
- 600-BhwNWuTr.css14 kB
- ExeBuilder-jIYBtQhS.js5.8 kB
- newExe-e1L-l6hy.js4.8 kB
- tokens-D0Hn2-yX.css3.9 kB
Remove references to broken resourcessave ~<0.001 g/visit (146 B)Advisory · quick fix
2 requests 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.
- profileHTTP 401 · 97 B
- integrationsHTTP 401 · 49 B
Where the bytes are
- Images1.43 MB · 1 req
- JavaScript112 kB · 7 req
- Fonts75 kB · 3 req
- CSS48 kB · 7 req
- HTML12 kB · 1 req
- Data (fetch)305 B · 4 req
Ten heaviest requests
| Resource | Type | Wire size | Cache-Control |
|---|---|---|---|
| exe.dev/static/exy.png | image | 1.43 MB | no-cache |
| exe.dev/assets/600-Ce9kNqBK.js | script | 63 kB | public, max-age=604800, immutable |
| fonts.gstatic.com/s/jetbrainsmono/v24/tDbv2o-flEEny0FZhsfKu5WU4zr3E_BX0PnT8RD8yKwBNntkaToggR7BYRbKPxDcwg.woff2 | font | 32 kB | public, max-age=31536000 |
| exe.dev/static/term-player.js?v=1 | script | 26 kB | no-cache |
| exe.dev/assets/jetbrains-mono-latin-600-normal-C8RAYTDA.woff2 | font | 22 kB | public, max-age=604800, immutable |
| exe.dev/assets/jetbrains-mono-latin-400-normal-V6pRDFza.woff2 | font | 21 kB | public, max-age=604800, immutable |
| exe.dev/static/index.css?v=16 | stylesheet | 21 kB | no-cache |
| exe.dev/assets/600-BhwNWuTr.css | stylesheet | 14 kB | public, max-age=604800, immutable |
| exe.dev/ | document | 12 kB | n/a |
| exe.dev/static/index.js?v=6 | script | 8.3 kB | no-cache |
Share this report
<a href="https://carbonless.cc/report/exe.dev"><img src="https://carbonless.cc/api/badge?url=https%3A%2F%2Fexe.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.