nuage.one/gallery/watercolors

The numbers

First visit

3.45 g CO₂e

Return visit

<0.001 g CO₂e

Hosting

unknown

LCP

612 ms

CLS

0.123

TTFB

21 ms

At 10,000 views a month this page emits about 310.3 kg CO₂e a year, roughly 1272 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

1. Convert and compress imagessave ~1.16 g/visit (10.47 MB)High impact · quick fix

   54 images (23.26 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.

   • moules.jpg1.04 MB
   • plage_blue_bay.jpg937 kB
   • mont_saint_michel.jpg930 kB
   • bateau-bleu.jpg722 kB
   • chateau_la_valette.jpg700 kB

   WSG 2.9: Optimize media to reduce resource use
2. Lazy-load below-the-fold mediasave ~0.639 g/visit (5.75 MB)High impact · quick fix

   19 below-the-fold images/iframes (11.51 MB) download immediately for every visitor.

   Add loading="lazy" to below-fold img and iframe elements (and keep it off the LCP image). Browsers then fetch them only when scrolling approaches.

   • moules.jpg1.04 MB
   • bateau-bleu.jpg722 kB
   • chateau_la_valette.jpg700 kB
   • source-du-temple.jpg683 kB
   • phare-agon-coutainville.jpg662 kB

   WSG 2.9: Optimize media to reduce resource use
3. Serve images at the size they displaysave ~0.097 g/visit (875 kB)High impact · quick fix

   20 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.

   • moules.jpg1.04 MB
   • bateau-bleu.jpg722 kB
   • chateau_la_valette.jpg700 kB
   • source-du-temple.jpg683 kB
   • phare-agon-coutainville.jpg662 kB

   WSG 2.9: Optimize media to reduce resource use
4. 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
5. Set a page-weight budgetAdvisory · moderate effort

   At 23.26 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.

   WSG 3.1: Set goals based on performance and energy impact
6. Upgrade connections to HTTP/2 or HTTP/3Advisory · quick fix

   1 host serves five or more resources over HTTP/1.1, paying per-request connection and header overhead newer protocols eliminate.

   Enable HTTP/2 (or HTTP/3) on the server or move the assets behind a CDN that speaks it; multiplexing makes many small requests nearly free.

   • nuage.one57 requests over http/1.1

   WSG 3.1: Set goals based on performance and energy impact

Where the bytes are

• Images23.26 MB · 54 req
• HTML3.1 kB · 1 req
• CSS2.7 kB · 2 req