To provide a biaxially-drawn polyester film excelling in adhesiveness between an adhesive layer and a base material film even at a low temperature, and suitable for a window-pasting film having a light-blocking property.

The window-pasting biaxially-drawn polyester film is a co-extrusion laminated polyester film comprising at least three layers of polyester layers containing a dye in the middle layer, and includes, at least on one surface of the film, a coating layer containing polycarbonate-based polyurethane.