The Faceit Elo calculator is a Chrome, and Firefox extension that adds a simple display for the Elo won or lost during a Faceit match.
This project was inspired by Faceit Enhancer (FE). FE used to have this functionality but it broke in January 2022 when Faceit made some sweeping changes to its UI.
The FE project is open source, and I had originally intended to update FE with this improvement and get that pushed live. However the project maintainers had not responded to an issue or PR in some time, and I figured it would be much faster for me to make and publish my own Extension.
This project is entirely open source and is available on GitHub.