Online document collaboration tools, such as Google Docs, offer designers different ways of communicating and working collaboratively compared to face-to-face interaction. In this paper, we attempt to explore the possibilities and limitations of using an online document collaboration tool for design problem-solving activities. A design workshop study was conducted to compare using Google Docs during a design task to face-to-face collaboration. As a result, we found different influences of exploiting an online document collaboration tool and face-to-face interaction on the design process, and identified the properties that afford different characteristics of design problem-solving activity. Based on these findings, we discuss the implications of using an online document collaboration tool and face-to-face interaction for collaborative design.