Alternatives to Website Carbon Calculator
Free online tool that estimates the carbon emissions produced when a web page is loaded. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Website Carbon Calculator
Free online tool that estimates the carbon emissions produced when a web page is loaded.
Replacements
Listings that take over the same core job as Website Carbon Calculator.
Ecograder
Online checker that reports a website's page weight, performance and estimated emissions.
Ecograder tracks page weight, performance and emissions over time and maps results to W3C Web Sustainability Guidelines, but requires an account and is in open beta.
Similar software
Related functionality, not a direct replacement.
PageSpeed Insights
Google's free web tool that reports Core Web Vitals and Lighthouse results for any URL.
GTmetrix
An online page speed tester with waterfall charts, Core Web Vitals, scheduled monitoring and alerts.
Yellow Lab Tools
An open-source tool that audits a webpage for performance and front-end code quality issues.
Request Map Generator
A web tool that draws a node map of every request a page makes, including third parties.
WebPageTest
An online website performance tester with waterfall charts, filmstrips, multiple locations and throttled connections.
