Carbon report
www.netcup.com/de
Scanned · all pages on www.netcup.com
Redirected here by the site from netcup.de
0.253 g
cleaner than an estimated 63.6% 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
- 0.333 g CO₂e
- 0.014 g CO₂e
- verified green
- 576 ms
- 0.001
- 320 ms
At 10,000 views a month this page emits about 30.4 kg CO₂e a year, roughly 125 km in an average petrol car. The estimate assumes 75% new and 25% returning visitors, a measured cache reload ratio of 4%, and world-average grid intensity. How we calculate this
What to fix
apply everything → ~0.101 g/visit, rating B
Audit third-party servicessave ~0.122 g/visit (1.32 MB)High impact · moderate effort
8 third-party domains account for 2.64 MB (96% 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.
- www.netcup.com1.90 MB
- measure.netcup.com359 kB
- cdn.cookielaw.org207 kB
- www.googletagmanager.com160 kB
- chat-ui.netcup.com17 kB
- geolocation.onetrust.com282 B
Convert and compress imagessave ~0.054 g/visit (583 kB)High impact · quick fix
8 images (1.30 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.
- large_startseiten_header_VPS_x86_v02_2926352a…626 kB
- Michaela-Tom_netcup_shirt_v03.png495 kB
- HOTY_V_Server_1_netcup_1_06076f4f7f.png62 kB
- nc_WHDJ_26_Blog_1046x746_DE_49c30ee1ed.png51 kB
- SP_2025_b739192e90.png22 kB
Reduce JavaScript payloadsave ~0.027 g/visit (297 kB)High impact · moderate effort
133 scripts total 1.19 MB on the wire (3.48 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.
- B0myLyiM.js207 kB
- js184 kB
- nstm.js175 kB
- js160 kB
- otBannerSdk.js131 kB
Serve images at the size they displaysave ~0.0058 g/visit (63 kB)Medium impact · quick fix
5 images are encoded at more than twice the pixels the layout shows, even accounting for this viewport's pixel density.
Generate multiple sizes and let the browser pick with srcset/sizes; a 4000px original behind a 400px slot spends bandwidth no screen displays.
- large_startseiten_header_VPS_x86_v02_2926352a…626 kB
- Michaela-Tom_netcup_shirt_v03.png495 kB
- HOTY_V_Server_1_netcup_1_06076f4f7f.png62 kB
- nc_WHDJ_26_Blog_1046x746_DE_49c30ee1ed.png51 kB
- SP_2025_b739192e90.png22 kB
Upgrade compression beyond gzipsave ~0.017 g/visit (185 kB)Advisory · quick fix
1.23 MB 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.
- B0myLyiM.js207 kB
- js184 kB
- nstm.js175 kB
- otBannerSdk.js131 kB
- netcup.de111 kB
Set a page-weight budgetAdvisory · moderate effort
At 2.75 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://www.netcup.com/de. 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://netcup.de/redirects to https://www.netcup.com/de
Simplify the document structureAdvisory · larger effort
The page renders 6938 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.
Where the bytes are
- Images1.33 MB · 18 req
- JavaScript1.19 MB · 133 req
- HTML111 kB · 1 req
- Data (fetch)56 kB · 14 req
- Fonts38 kB · 3 req
- CSS33 kB · 34 req
- Data (XHR)2.8 kB · 2 req
Ten heaviest requests
| Resource | Type | Wire size | Cache-Control |
|---|---|---|---|
| www.netcup.com/uploads/large_startseiten_header_VPS_x86_v02_2926352a55.png | image | 626 kB | max-age=31536000, s-maxage=31536000, immutable, public |
| www.netcup.com/Michaela-Tom_netcup_shirt_v03.png | image | 495 kB | max-age=1, s-maxage=900, public |
| www.netcup.com/_nuxt/B0myLyiM.js | script | 207 kB | public, max-age=31536000, immutable |
| measure.netcup.com/gtag/js?id=G-9YZGSYCPKT&cx=c>m=4e68c1 | script | 184 kB | private, max-age=900 |
| measure.netcup.com/nstm.js?id=GTM-5XZLWSL | script | 175 kB | private, max-age=900 |
| www.googletagmanager.com/gtag/js?id=AW-972789437&cx=c>m=4e68c1 | script | 160 kB | private, max-age=900 |
| cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js | script | 131 kB | max-age=86400 |
| netcup.de/ | document | 111 kB | max-age=0, s-maxage=5, public |
| www.netcup.com/uploads/HOTY_V_Server_1_netcup_1_06076f4f7f.png | image | 62 kB | max-age=31536000, s-maxage=31536000, immutable, public |
| www.netcup.com/uploads/nc_WHDJ_26_Blog_1046x746_DE_49c30ee1ed.png | image | 51 kB | max-age=31536000, s-maxage=31536000, immutable, public |
Share this report
<a href="https://carbonless.cc/report/www.netcup.com/de"><img src="https://carbonless.cc/api/badge?url=https%3A%2F%2Fwww.netcup.com%2Fde" 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.