Nice, I've been looking for something like this for my new tab page extension. Will it remain free after the beta? How does it compare to https://github.com/mat/besticon/
There are/have been a few free and open source alternatives out there. I built Favicon Kit because I wanted something fast, scalable and - most of all - reliable.
Most of the free alternatives vary in features, disappear after a while or just become inactive (even besticon’s Heroku demo).
Favicon Kit wants to be the sustainable, reliable, solid, production-grade service for favicons.
There will eventually be a paid plan which guarantees availability for paying customers.