  The message a designer wants to convey plays a pivotal role in directing the
design of an infographic, yet most authoring workflows start with creating the
visualizations or graphics first without gauging whether they fit the message.
To address this gap, we propose Epigraphics, a web-based authoring system that
treats an "epigraph" as the first-class object, and uses it to guide
infographic asset creation, editing, and syncing. The system uses the
text-based message to recommend visualizations, graphics, data filters, color
palettes, and animations. It further supports between-asset interactions and
fine-tuning such as recoloring, highlighting, and animation syncing that
enhance the aesthetic cohesiveness of the assets. A gallery and case studies
show that our system can produce infographics inspired by existing popular
ones, and a task-based usability study with 10 designers show that a
text-sourced workflow can standardize content, empower users to think more
about the big picture, and facilitate rapid prototyping.
