0.508 g
cleaner than an estimated 35.4% 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
- 0.677 g CO₂e
- 0.0011 g CO₂e
- unknown
- 4.26 s
- n/a
- 3.35 s
At 10,000 views a month this page emits about 60.9 kg CO₂e a year, roughly 250 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 → ~0.203 g/visit, rating C
Defer video and audiosave ~0.363 g/visit (3.26 MB)High impact · quick fix
4.08 MB of audio/video downloads during initial page load.
Never autoload media: use preload="none" with a poster image, load players on interaction, and stream in an efficient codec (AV1/HEVC).
- example-trip.webm2.04 MB
- example-trip.webm2.04 MB
Reduce JavaScript payloadsave ~0.011 g/visit (103 kB)Medium impact · moderate effort
16 scripts total 412 kB on the wire (1.33 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.
- js170 kB
- 249261e921aeebba.js67 kB
- dea51636871026e8.js62 kB
- 54f7a9c94896a495.js31 kB
- afe61357a0f49fb2.js10 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.
Set a page-weight budgetAdvisory · moderate effort
At 4.57 MB per view this page rates F. 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.
Where the bytes are
- Audio / video4.08 MB · 2 req
- JavaScript412 kB · 16 req
- Fonts49 kB · 1 req
- CSS11 kB · 1 req
- Data (fetch)7.3 kB · 9 req
- HTML6.1 kB · 1 req
- Images1.0 kB · 1 req
Ten heaviest requests
| Resource | Type | Wire size | Cache-Control |
|---|---|---|---|
| tripreplay.app/example-trip.webm | media | 2.04 MB | public,max-age=0,must-revalidate |
| tripreplay.app/example-trip.webm | media | 2.04 MB | public,max-age=0,must-revalidate |
| www.googletagmanager.com/gtag/js?id=G-NGY74D85KZ | script | 170 kB | private, max-age=900 |
| tripreplay.app/_next/static/chunks/249261e921aeebba.js | script | 67 kB | public,max-age=31536000,immutable |
| tripreplay.app/_next/static/chunks/dea51636871026e8.js | script | 62 kB | public,max-age=31536000,immutable |
| tripreplay.app/_next/static/media/83afe278b6a6bb3c-s.p.3a6ba036.woff2 | font | 49 kB | public,max-age=31536000,immutable |
| tripreplay.app/_next/static/chunks/54f7a9c94896a495.js | script | 31 kB | public,max-age=31536000,immutable |
| tripreplay.app/_next/static/chunks/b8ee9d1ca23cb2d1.css | stylesheet | 11 kB | public,max-age=31536000,immutable |
| tripreplay.app/_next/static/chunks/afe61357a0f49fb2.js | script | 10 kB | public,max-age=31536000,immutable |
| tripreplay.app/_next/static/chunks/dc3fe63021f8a734.js | script | 10 kB | public,max-age=31536000,immutable |
Share this report
<a href="https://carbonless.cc/report/tripreplay.app"><img src="https://carbonless.cc/api/badge?url=https%3A%2F%2Ftripreplay.app" 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.