EBU OGraf is a specification for Web-based Broadcast Graphics. It allows for inter-operability between Graphics-providers (developers), Controllers and Renderers.
There are two parts to the OGraf specification, targeting different use cases:
The OGraf Graphics specification defines how a graphic should work. An OGraf Graphic is a web-component.
The OGraf Server API specifies a RESTful API to be used between a Controller (such as a graphics control client, or automation system) and an OGraf Renderer.