0.226 g
cleaner than an estimated 67.5% 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
- 0.295 g CO₂e
- 0.022 g CO₂e
- verified green
- 392 ms
- 0
- 217 ms
At 10,000 views a month this page emits about 27.2 kg CO₂e a year, roughly 111 km in an average petrol car. The estimate assumes 75% new and 25% returning visitors, a measured cache reload ratio of 7%, and world-average grid intensity. How we calculate this
What to fix
apply everything → ~0.089 g/visit, rating B
Audit third-party servicessave ~0.113 g/visit (1.21 MB)High impact · moderate effort
6 third-party domains account for 2.42 MB (100% 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.
- luma.com1.95 MB
- images.lumacdn.com365 kB
- fonts.gstatic.com73 kB
- api.luma.com31 kB
- fonts.googleapis.com1.2 kB
- o370968.ingest.us.sentry.io473 B
Reduce JavaScript payloadsave ~0.045 g/visit (480 kB)High impact · moderate effort
96 scripts total 1.92 MB on the wire (6.33 MB 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.
- 079vr-1ge_gok.js169 kB
- 0i7u6fx5896b0.js141 kB
- 42fkd--n7blb4.js103 kB
- 3n_hvliuhuuf7.js68 kB
- 3o99ggdrv-1et.js58 kB
Fix caching for returning visitorssave ~0.0042 g/visit (35 kB)Medium impact · quick fix
On a repeat visit 139 kB of static assets were re-downloaded instead of coming from cache.
Serve static assets with Cache-Control: public, max-age=31536000, immutable and versioned filenames so returning visitors download almost nothing.
- c12.webpCache-Control: max-age=2678400 · 47 kB
- c01.webpCache-Control: max-age=2678400 · 35 kB
- c19.webpCache-Control: max-age=2678400 · 31 kB
- c06.webpCache-Control: max-age=2678400 · 14 kB
- c17.webpCache-Control: max-age=2678400 · 9.8 kB
Remove references to broken resourcessave ~<0.001 g/visit (236 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.
- envelopeHTTP 403 · 359 B
- envelopeHTTP 403 · 114 B
Set a page-weight budgetAdvisory · moderate effort
At 2.43 MB per view this page rates D. The findings above list where the weight is.
Agree a transfer budget (e.g. under 975 kB reaches a B), enforce it in CI, and re-scan after each change to hold the line.
Remove the entry redirectAdvisory · quick fix
The address that was scanned goes through 1 redirect before the document is served, ending at https://luma.com/. Every hop is a full round trip on a connection that has not warmed up yet.
Point links, sitemaps and canonical tags at the final address, and make the host redirect in one hop rather than chaining http to https to www.
- https://lu.ma/redirects to https://luma.com/
Where the bytes are
- JavaScript1.92 MB · 96 req
- Images365 kB · 37 req
- Fonts73 kB · 1 req
- Data (fetch)31 kB · 6 req
- CSS30 kB · 2 req
- HTML10 kB · 1 req
- Other2.8 kB · 7 req
- Data (XHR)1.5 kB · 1 req
Ten heaviest requests
| Resource | Type | Wire size | Cache-Control |
|---|---|---|---|
| luma.com/_next/static/immutable/chunks/079vr-1ge_gok.js | script | 169 kB | public, max-age=31536000, immutable |
| luma.com/_next/static/immutable/chunks/0i7u6fx5896b0.js | script | 141 kB | public, max-age=31536000, immutable |
| luma.com/_next/static/immutable/chunks/42fkd--n7blb4.js | script | 103 kB | public, max-age=31536000, immutable |
| images.lumacdn.com/cdn-cgi/image/format=auto,fit=cover,dpr=2,anim=false,background=white,quality=75,width=240,height=240/landing/c04.webp | image | 74 kB | max-age=2678400 |
| fonts.gstatic.com/s/inter/v20/UcCo3FwrK3iLTcviYwY.woff2 | font | 73 kB | public, max-age=31536000 |
| luma.com/_next/static/immutable/chunks/3n_hvliuhuuf7.js | script | 68 kB | public, max-age=31536000, immutable |
| luma.com/_next/static/immutable/chunks/3o99ggdrv-1et.js | script | 58 kB | public, max-age=31536000, immutable |
| luma.com/_next/static/immutable/chunks/0rt3-qilvx_13.js | script | 52 kB | public, max-age=31536000, immutable |
| luma.com/_next/static/immutable/chunks/1tni_f_pycllw.js | script | 46 kB | public, max-age=31536000, immutable |
| luma.com/_next/static/immutable/chunks/096ljbqid0k0g.js | script | 40 kB | public, max-age=31536000, immutable |
Share this report
<a href="https://carbonless.cc/report/luma.com"><img src="https://carbonless.cc/api/badge?url=https%3A%2F%2Fluma.com" 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.