This book is written in plain and simple English. The translation largely follows their guidelines.

The book is suitable for readers who have limited reading ability (dyslexia), are learning English as a second language, have difficulties with complex texts or simply want to enjoy a book in a compact, reader-friendly format. ‘Heidi’ is a children's book by Johanna Spyri.

It is about a little girl called Heidi who lives with her grandfather in the Swiss Alps. Heidi's parents have died, so her aunt takes her to live with her grandfather, who lives alone on a mountain.

At first, the grandfather is not happy about this, but soon he loves Heidi very much. Heidi makes friends with Geißenpeter, a boy who herds goats.

She loves the mountains and nature. Later, Heidi has to go to a rich family in the city to keep Klara, who is ill, company.

Klara is in a wheelchair. Heidi is unhappy in the city and misses the mountains and her grandfather.

Her longing makes her ill. Eventually she is allowed to return to the mountains.

Later, Heidi has to live with a rich family in the city to serve as a companion for Klara, who is ill. .