Howl's Moving Castle the book and the movie are both amazing, but there's a few differences.
What the author of howls moving castle had to say about the film: : r/ghibli
Howl's Moving Castle: 5 Differences Between The Book And The Movie (& 5 Things That Stayed The Same)
Howl's Moving Castle: Miyazaki's Missed Opportunity – Wizard Dojo
HOWL'S MOVING CASTLE: DIFFERENCES BETWEEN NOVEL AND MOVIE
Howl's Moving Castle: The Biggest Differences Between The Movie and The Book
Howl's Moving Castle Book vs. Movie
Howls Moving Castle: Book vs. Movie, by Carley Marston
Howl's Moving Castle: The Movie's 10 Biggest Changes From The Book
Howl's Moving Castle: The Biggest Differences Between The Movie and The Book
Howl's Moving Castle - Story Structure Database
Book vs. Movie: Howl's Moving Castle by Diana Wynne Jones
Heartfelt Moment of Foreshadowing in Howl's Moving Castle : r/ghibli
Book vs. Movie: Howl's Moving Castle by Diana Wynne Jones
Howl's Moving Castle
Book vs. Movie: Howl's Moving Castle by Diana Wynne Jones