Heidi is a work of children's fiction published in 1881 by Swiss author Johanna Spyri, originally published in two parts as Heidi's years of learning and travel (German: Heidis Lehr- und Wanderjahre) and Heidi makes use of what she has learned. (German: Heidi kann brauchen, was es gelernt hat). It is a novel about the events in the life of a young girl in her grandfather's care, in the Swiss Alps. It was written as a book "for children and those who love children" (as quoted from its subtitle). Heidi is one of the best-selling books ever written and is among the best-known works of Swiss literature. (https://en.wikipedia.org/wiki/Heidi)
About 20 film or television productions of the original story have been made. The Heidi films were popular far and wide, becoming a huge hit and an iconic animated series in several countries around the world. In the U.S., the most popular movie version was "Heidi", a 1937 motion picture which starred Shirley Temple in the title role.