Window film is a meager overlay film that can be introduced to the inside or outside of glass surfaces in autos and pontoons and furthermore to the inside or outside of glass in homes and structures. It is generally produced using polyethylene terephthalate (PET), a thermoplastic polymer gum of the polyester family, because of its lucidity, elasticity, dimensional dependability, and capacity to acknowledge an assortment of surface-applied or implanted medicines.

Window films are conventionally ordered by their development segments (colored, pigmented, metallized, artistic or nano), by their expected use (car, marine or structural), by substrate type (glass or polycarbonate), or potentially by their specialized presentation (protection, sun powered control, wellbeing and security).

Window film is typically introduced by proficient assistance organizations however there are likewise DIY units generally accessible.

The International Window Film Association, established in 1991, gives unbranded data about window films.