What we do
- Before publication every image is converted to our corporate palettes with eight-level Bayer ordered dithering: Neutral grey · Petrol green · Architectural blue · Earth tones. The pattern is baked into the file like print ink — no browser filters.
- Desktop images are budgeted at 32 KiB and mobile at 16 KiB; the build verifies every byte and rejects oversize variants.
- Originals stay out of the payload: our 50 registered sources total 12442.1 KiB, while the published dither variants used on the site add up to 1830.1 KiB. An original photo loads only on request.
- We use system fonts — no webfont download. PDFs and embedded frames load only on click.
- A text-only mode hides images entirely, and visitors with data saver enabled get a one-time light-mode invitation.
- Return visits open mostly with zero transfer thanks to the service worker; content-addressed images stay cached until they change.
This page, measured
- HTML · gzip
- 5.4 KB
- CO₂e · SWDM v4 estimate
- <0.01 g
These values are recomputed on the server for every request and cover the HTML transfer only; images, fonts and scripts are excluded.
Method and honesty
The carbon row follows the Sustainable Web Design Model v4: 0.81 kWh/GB (data centre + network + device), 442 gCO₂e/kWh global average grid, 75% first / 25% returning visits with 2% re-transfer.
Two facts are kept apart: green hosting verification describes the hosting record only, while the per-visit CO₂e value is an estimate that depends on the model. What we measure is data transfer — no real energy bill or certification score is claimed.
Hosting check (Green Web) ↗Carbon estimate method (CO2.js) ↗Performance budgets ↗
Want to try the method on your own image? Dither lab →
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Get to know AECO.
Share the building type, area and project stage; we will clarify the analyses needed and the scope of the proposal together.