This interactive website shows the environmental impact of digital files

Is earth's inbox full? Thanks in Advance guides viewers through the carbon consequences of digital files. "Over a year, one inbox consumes enough energy to illuminate 40 lightbulbs for an hour." The site offers a few easy ways to reduce energy usage.

Cleanfox deletes old newsletters and unsubscribes from the ones you don't open. And it's free!

SmallPDF reduces the file size of PDFs.

The site also recommends deleting old accounts that are sitting unused, amassing spam mail.

The website itself, which claims to be greener than 97% of websites, describes the strategies its designers used, such as using a static web page, cloud-hosted fonts, and a green hosting service.