visualizer

noun4

1. •
   That which provides a visualization.

   • […]an HTML visualizer that converts HTML code to a Web page[…] — 2010
2. •
   A video accompanying a song, usually simpler than a typical music video, intended to be a visual representation of the song.
3. •
   Someone who visualizes; especially someone whose mental imagery is visual.
4. •
   A person in the advertising industry who produces artwork for presentations.