The Well Known Button Information Specification

This document specifies the well-known URI /.well-known/button.json, which describes a web site's "buttons". Buttons are usually 88x31 pixel images representing the web site with text, logos, artwork, and animations. /.well-known/button.json files facilitate sharing buttons between web site owners and alleviate issues commonly encountered when doing so. By utilizing a standardized, machine-readable format, automated tools can also utilize the provided information.