Add website size test or website carbon estimator

[ottok]

Since the introduction of the speed test in 6ed54ae customers have hade a nice UI to test the speed of their site.

There could also be something that would estimate the total download size of their site - a factor that directly correlates with speed (in particular over mobile connections) and also correlates with carbon emissions. Such a test should be done using the headless Chrome to capture the full page load.

Alternatively we could integrate a carbon emission estimator by integrating with websitecarbon.com:

https://www.websitecarbon.com/website/wp-palvelu-fi/

Both measures are mitigated by decreasing the total download size and would lead to similar behavior on website devs.

[ottok]

I think implementing this would be too much of an effort and still not very accurate. However, to emphasize this the Site info box could include a link to The Green Web Foundation check so site admins can discover that their site is green and listed there?