Plaisant, CatherineCarr, DavidShneiderman, BenImage browsing is necessary in numerous applications. Designers have merely used two one-dimensional scroll bars or they have made ad hoc designs for a two-dimensional scroll bar. However, the complexity of two-dimensional browsing suggests that more careful analysis, design, and evaluation might lead to significant improvements. We present a task taxonomy for image browsing, suggest design features and guidelines, assess existing strategies, and introduce an informal specification technique to describe the browsers. (Also cross-referenced as CAR-TR-712) (Also cross-referenced as ISR-TR-94-47)en-USTechnical Report