Guidance on Widgets
A widget is a portable piece of computer code that can be executed within a Web page to allow content from one site to be presented dynamically within another. Widgets often take the form of on-screen tools (clocks, event countdowns, auction tickers, stock market tickers, flight arrival information, daily weather, etc).
At present, no third-party “widget” code is approved for use by DOI. This includes Twitter follow buttons, embeds, and the Facebook "like" button.