CarbonGrader - test how sustainable your website is
We built a lightweight web app to test how sustainable a web page is. It uses open source and free libraries, and is inspired by EcoGrader.
Use our free tool to test your site, get an easy to understand score and a list of the most important fixes to make.
- Estimate the carbon output of a page
- Test performance - load time, page size etc
- Check if your hosting provider uses green energy
Why use CarbonGrader?
Speed
A sustainable site is also a fast site, which is good for your visitors. If a site takes too long to load your visitors might give up and go elsewhere - losing you that sale or enquiry.
Search Engines
Search engines like Google also love fast sites, and fast page load times can contribute to better search engine rankings.
How CarbonGrader works
The carbon output of a page is estimated by CO2.js (Apache-2.0) and Greencheck to see if the hosting provider uses sustainable energy or not. Both these are from the Green Web Foundation.
Performance is tested using the Google PageSpeed Insights API and simplified - full results for a page can be seen from Pagespeed Insights
The app is coded in Javascript with the interface built using the UIKit framework (MIT), plus a sprinkling of custom CSS.