The invention provides a roll of a white heat-shrinkable polyester-based film containing titanium oxide which can suppress occurrence of a processing trouble of a label or the like cut out from the roll, even when widening the roll. The roll of the white heat-shrinkable polyester-based film satisfies the following requirements: (1) the length of the film is 1,000-20,000 m and the width of the film is 400-10,000 mm, (2) the heat-shrinkage ratio in a main shrinkage direction is 50-85%, (3,4) the difference between the maximum and minimum heat-shrinkage ratio in the main shrinkage direction is 0-3% among samples which are sampled in each of the width and longitudinal directions of the film, and (5,6) the difference between the maximum and minimum apparent specific gravity is 0-0.01 g/cm3 among samples which are sampled in each of the width and longitudinal directions of the film.