This issue of Library Technology Reports (vol. 53, no. 3), "Information Visualization," shares a comprehensive overview of information visualization, including its definitions, major principles, and common techniques. Author Dr. Hsuanwei Michelle Chen provides an in-depth discussion and demonstration of how information visualization can be applied to a library setting. The objective of this issue of Library Technology Reports is to provide librarians and library staff with a better grasp of what information visualization can do for their institution and how it can help enhance your library's data analytics, communication, service quality, and work effectiveness. The report appeals to both readers who are new to the field and would like to learn a new method of data analytics, as well as to the individual who is experienced in information visualization and is seeking further opportunities in the library field.