How it works
Sustainability Web Model
Wicked Green Web uses version 4 of the Sustainable Web Design Model (SWD).
To summarize how it works, there are a few factors. The main factor being the file sizes that make up the page. The model accounts for that data across the follow segments.
- Data centers: hosting the page
- Networks: transmitting the page
- User's device: loading the page
The remaining factors include how much of the above segments are powered by renewable energy sources, and site statistics. Those include new and returning visitor ratios, and how much of the site is cached for returning visitors.
Rating scale
The rating scale is also defined by SWD. It uses the global average of 2.4 MB as the pass/fail threshold. Meaning anything higher than the average is am "F", and anything smaller gets graded "A" through "E" depending on their score. The scale is rigorous and is meant to inspire organizations and developers to improve their sustainability.