Next month the Tweet and follow buttons will switch to a modern, high-contrast design of white text on a dark blue background. This visual refresh updates our button design from 2011.
Tweet buttons make authoring a Tweet from the context of a current webpage quick and easy. We are simplifying the Tweet button by removing the share counter displayed alongside the button. This new display removes the
counturl display parameters, and will render in the same pixel dimensions as a Tweet button configured without a share count today.
The Tweet button has displayed share count over the last five years by querying a JSON endpoint hosted on various domains. These private JSON endpoints have been used by third-party developers over the years to retrieve a simple share count of any URL. These endpoints will be shut down next month when the Tweet button removes its share count feature. The Twitter REST API's search endpoints are the best way to gather ad-hoc information about a URL shared on Twitter.
Follower counts continue to be available for follow button in the existing, horizontal layout.