Honestly speaking, this is one those films which didn’t divert or change much of the plot from the book. There were just some instances where in some of the scenes were not included or some scenes that had minor alterations.
THE BOOK VERSUS THE MOVIE
- On Dudley’s birthday, his friends were also invited. In the movie, it was only him, Harry and his parent who went to the zoo.
- Aunt Petunia and Dudley are supposed to be blondes.
- In the movie, Harry was shown taking to a Burmese Python. In the book, it was of the Boa Constrictor breed which came from Brazil.
- In the movie, Dudley fell inside the snake’s place.
- When Hagrid visited him in the movie, he just gave him a cake and cursed Dudley by giving him a pig’s tail and then left with Harry to go to Diagon Alley to buy his things. While in the book, he slept overnight in with the Dursleys. He even prepared tea and let Harry cooked sausage.
- In the book, Harry first encountered Draco in the Diagon Alley.
- Hagrid accompanied Harry to his trip to Kings Cross, while in the book; Harry waited a month before going to Kings Cross. His Aunt, Uncle, and Dudley were going to the hospital for Dudley’s tail to be removed that’s why he went with them to Kings Cross.
- Hermione didn’t fix Harry’s eyeglasses.
- I was waiting for the Sorting Hat to sing, sadly it didn’t.
- Harry, Hermione, Ron, and Neville road a boat together in the book.
- In the book, the students were called alphabetically while in the movie, students were called randomly.
- Neville should have been with them when they saw Fluffy in the third floor.
- Peeves, the Poltergeist wasn’t included in the movie.
- Harry was supposed to hide the Nimbus 2000 package he received during breakfast because his position as the Gryffindor’s new Seeker should be kept a secret.
- Ron and Malfoy fought during one of the Quidditch game. This was not shown in the movie.
- My most awaited scene in the movie was the Quidditch. I love that part. Thanks for the visuals.
- Hagrid’s character in the movie was toned down. It would have been fun to see his character do all those loud sobbing.
- Harry was the first one to encounter Nicholas Flamel’s name, not Hermione as shown in the movie.
- The Mirror of Erised was supposed to show Harry’s entire family, not only his parents.
- Harry and Hermione were the one who arranged for Norbert, the Norwegian Ridgeback, to be picked up by Charlie’s friends at the Astronomy Tower. In the movie, Albus Dumbledore sent him far away and it wasn't emphasized. It was just Hagrid who told the trio.
- Neville Longbottom was included in the detention and was among the four students who went to the forest as part of their punishment. Professor McGonagall saw him walking in the hall trying to find Harry to warn him. Ron wasn’t a part of it since he was hospitalized because he was bitten by Hagrid’s dragon.
- When they were trying to figure out how to go inside the forbidden room, there should have been 3 broomsticks and each of them rode one to catch the key to open the door.
- The harp shown in the movie was charmed and continuously played. In the book, they alternately played the flute to keep Fluffy sleeping.
- It was Hermione who panicked when she can’t figure out how to produce fire to stop the Devil’s Snare, not Ron as shown in the movie.
- Hermione should have joined Harry to move forward in stopping the thief of the Sorcerer’s Stone. Ron was left behind when he was smashed. I’m just sad they didn’t include this in the movie. Hermione was really good in solving the potion test created by Snape.
- In the book, Quirell tied Harry with ropes.
- In the book, Harry kept mum when he felt the Sorcerer’s Stone in his pocket. In the movie, he considered giving the stone to Voldemort, but decided against it in the end.
- It wasn’t mentioned in the movie as to how Harry escaped the dungeon. In the book, it was Albus Dumbledore who rescued Harry minutes after fainting while holding unto Quirell’s hand. Albus also mentioned in the book why Snape seemed to hate Harry so much.
There may be a lot of other scenes that I have overlooked, but yeah, those above are the most noticeable.
I like the fact that most of the dialogues in the movie were still based on the book. I understood why some scenes were not included because 2 hours and 30 minutes wouldn’t accommodate all that has happened in the book.
Overall, I loved the movie but it if you haven’t read the book, then you must read it to understand the story further.