Summary
- Peter Jackson's changes to The Hobbit trilogy includes new content loosely adapted from Tolkien's works.
- The romance between Tauriel and Kíli was a stark divergence from Tolkien's books on inter-species relationships.
- Azog's elevated role as a primary antagonist was a creative decision by Peter Jackson to enhance the movie trilogy.
When it comes to The Hobbit book vs movie there are many notable differences, and some are quite surprising. When Peter Jackson announced that he’d be directing a trilogy based on J. R. R. Tolkien’s Lord of the Rings prequel, The Hobbit, the response was one of excitement. However, the trilogy left some fans of the book were confused, given how little the amount of source material was available to flesh out such an ambitious project. In his transformation of the book into a trilogy of big-budget Hollywood action blockbusters, Jackson took many creative liberties.
This inevitably meant that the differences between The Hobbit book and movies were stark. Jackson implemented changes galore, adding in plenty of new content which was loosely adapted from Tolkien's other works. Some of it hit the mark, while the rest felt like superfluous filler. There's no question that in the case of The Hobbit book vs movie, Jackson did his best to please audiences. However, there were a few alterations that many fans didn't feel fit the story at all, making it seem like Jackson was trying to add LOTR to capitalize on its success.

11 Lord Of The Rings Movie Changes Peter Jackson Was Right To Make
Changes to Tolkien canon are often criticized, but some of the adjustments made for Peter Jackson's Lord of the Rings trilogy made the story better.
25 The Romance Between Tauriel And Kílí
Tolkien Never Envisioned A Dwarf And An Elf Falling In Love
Of all the characters in The Hobbit movie trilogy who weren't in Tolkien's novel, Tauriel is the one who requires the most investigating when discussing differences between the book and Peter Jackson's films. She's an original character created specifically for the screen, so represents one of the most controversial changes for Tolkien purists. However, in addition to her presence in general, a sub-plot for the character is also a huge deviation from Tolkien's Middle-earth — the romance between Tauriel and Kílí.
A romantic relationship between an elf and a dwarf is a notable difference from any of Tolkien's books, regardless of which characters are involved. While it's true that inter-species romances aren't unheard of (with the relationship between the human Aragorn and elf Arwen in Lord of the Rings being a prime example), Tolkien never spoke of a dwarf and elf becoming amorously entangled. While there's nothing to suggest he was against the idea, seeing Kílí woo Tauriel throughout Jackson's movie trilogy was a distinct and notable change from the source material.
24 The Final Battle With Smaug
There Was No Epic Showdown With The Dragon In The Novel
The showdown with Smaug in The Hobbit: The Battle of the Five Armies is one of the most epic sequences in Peter Jacksons movie trilogy. However, it's also a moment that happens almost completely differently in Tolkien's original novel. While Jackson kept several key details about how Smaug perishes, the moment is significantly elevated and filled with much more action than the death of the dragon in Tolkien's book.
In the book, just like in The Battle of the Five Armies, Smaug is killed by an arrow shot in the right spot of his stomach. However, Smaug in Tolkien's novel doesn't cause anywhere near as much destruction. What's more, Bard doesn't simply get a lucky shot with his Black Arrow in the book. In Tolkien's version, Bard learns of Smaug's weak sport after being told about it by a bird. While this is definitely more whimsical, it also likely wouldn't have fit the tone of Peter Jackson's movie trilogy.
23 Azog The Defiler Was Only A Sidenote In The Books
Thorin's Orc Rival Was Greatly Elevated
Stretching out Tolkien's The Hobbit novel naturally meant that Peter Jackson needed to expand upon several characters when fleshing out the story. This was especially true when it came to the antagonists, since having Bilbo's group spending over nine hours of screentime trying to foil Smaug alone would likely have created pacing issues. It's this need that led to one of the biggest differences between The Hobbit books and movies — the role of Azog the Defiler.
In Peter Jackson's movies, Azog is a fearsome and incredibly dangerous Orc who has a long-standing rivalry with Thorin. He is encountered multiple times by Bilbo's group, and on many occasions very nearly brings their quest to an abrupt and premature conclusion. While Azog is an important figure in Tolkien's version of Middle-earth, he's nowhere near as prominent a figure in the story of The Hobbit. Having Azog as a primary antagonist was a creative decision made by Peter Jackson, though it's arguably one that improved his movie trilogy significantly.
22 Multiple Battles With The Orcs
Tolkien's Version Of The Story Was Far Less Violent
Azog the Defiler isn't the only orc to appear much more frequently in Peter Jackson's The Hobbit movies than in Tolkien's novel. Generally speaking, there are many more battles against orcs in the on-screen version of the story than there are in the book. In The Hobbit movies, there are skirmishes against orcs when Bilbo's group are on the way to Rivendell, escaping from the elves, and in Lake Town, to name a few examples. None of these battles with orcs happen in Tolkien's The Hobbit novel.
However, there is a simple explanation for this difference between The Hobbit books and movies, and why it was a good creative decision on Peter Jackson's part. The Hobbit movie trilogy is framed much more directly as a prequel to The Lord of the Rings. This is evidenced by, for example, the presence of characters like Frodo or Legolas. However, it also meant a tonal shift was needed.
LotR is a story that focuses much more heavily on war and conflict in Middle-earth, whereas Tolkien's novel is more of a whimsical adventure. Including more battles against orcs is a subtle difference, and one that skeptics have suggested was made to pad out the runtime of the trilogy. However, it actually helped Jackon's The Hobbit movies have more in common with The Lord of the Rings movies.
21 Bilbo And The Dwarves Spent Weeks In Mirkwood
Time In The Forest Took Up Much Of Their Journey
In The Hobbit: The Desolation of Smaug, Bilbo and his group take a detour through Mirkwood on their way to the Lonely Mountain. This detour is intended as a shortcut, shortening the length of their journey significantly. However, while Peter Jackson's movies make it seem like Bilbo and the Dwarves spent very little time in the fabled forest, the same isn't true in Tolkien's The Hobbit novel.
In The Hobbit book, Bilbo, Thorin, and the rest of the dwarfs spend what's implied to be as long as several weeks in the forest. They have many smaller adventures there, and it's an incredibly significant part of the overall quest for Bilbo. There were several tense moments in Mirkwood in the books too, such as when the group ran out of food.
While cutting this part of the story down does make some sense for Peter Jackson's The Hobbit trilogy, it's also one of the more confusing differences between the book and the movies. There's a strong argument that the director could have included several important Mirkwood moments from Tolkien's story.
20 Gandalf's Reason For Seeking Out Bilbo
The Gandalf Of The Novel Never Met Child Bilbo
Gandalf's reasons for finding Bilbo are different when looking at The Hobbit book vs movie. In the novelization of The Hobbit, it is established that Gandalf seeks out Bilbo for the quest, particularly because of a memory he had of his mother. According to Gandalf, he was impressed by Belladonna Took, because of her adventurous spirit and personality, and he hoped that side would come out if Bilbo ed them on an adventure.
In the film, Gandalf reminisces about knowing Bilbo as a young boy, who adored the thought of danger, excitement, and adventure. The change isn't a huge one, but it does say a lot about Bilbo's character as he appeared in the book, versus the film adaptation. Either way, it's an opportunity for Gandalf to deliver one of his best lines of the trilogy.
19 The Dwarven Contract
Peter Jackson Made The Paperwork Longer For Comic Effect
Another one of the biggest differences between The Hobbit book and movie is the dwarven contract. The dwarves play a central role in both The Hobbit movies and the original book, with the presence of the race as a whole far greater than it was in Lord of the Rings. In fact, it's partially due to a contract with the dwarves that Bilbo leaves the shire in the first place. The details of the dwarven contract with Bilbo Baggins are never explicitly specified, which is why it's so comical to see the film version go on forever when unrolled.
It was Jackson's way of injecting some comedy into the film, especially at such an early start to the story.
It was Jackson's way of injecting some comedy into the film, especially at such an early start to the story. In the book, the contract is a simple note left on his mantle, with two short paragraphs acting as content. That's a stark contrast to the film version, and one of the few changes Jackson made that actually helped make the story better.
18 Bilbo Leaving Bag-End
In Peter Jackson's Version Of The Tale Hobbits Never Travel Light
Even the way that Bilbo leaves Bag-End contrasts in the case of The Hobbit book vs movie. This change was small, but noticeable, and it occurs when Bilbo finally decides to make a go of it and the dwarves on their adventure. In the film, he races after them with a backpack full of stuff and catches up with them before they get too far down the road. In the book, however, it is said that Bilbo left Bag-End without even a handkerchief in his pocket.
In truth, Jackson's change was probably for the best, as any Hobbit would never run off without a few of the comforts of home. It's established in the Lord of the Rings movies that Hobbits enjoy their creature comforts, with the likes of Samwise Gamgee bemoaning his of any food other than Lambas bread even while in grave danger, and Pippin insisting on second breakfast. With this context in the cinematic franchise, it makes much more sense that Bilbo left The Shire well-prepared.
17 Knowledge Of The Necromancer
Gandalf Already Knew About The Antagonist In The Book
Sauron is a mystery to those who only watched the movies, but changing Gandalf's knowledge of the Necromancer arguably broke canon when it comes to The Hobbit book vs movie. In The Hobbit films, Gandalf learns of the Necromancer when he speaks to Radagast, which is what Peter Jackson used as the reason for Gandalf leaving Thorin and company.
This change was likely made to ensure audiences weren't lost along the way as the story unfolded.
However, in the book, Gandalf is already well aware of the Necromancer. In J.R.R Tolkien's version of The Hobbit, Gandalf has already visited Dol Guldur, and heard of the Necromancer, as it was there that he encountered Thráin, the father of Thorin Oakenshield, and received the map and key that he later gives to Thorin. This change was likely made to ensure audiences weren't lost along the way as the story unfolded, as having to flashback to Gandalf's goings-on prior to the events of The Hobbit would have required even more screentime in an already lengthy trilogy.
16 Dwalin's Beard
A Subtle Yet Noticable Aesthetic Difference
Though it was not a massive change that impacted the plot, there was one element of Dwalin's appearance that classifies as one of the differences between The Hobbit book and movie. Interestingly enough, the book says, "It was a dwarf with a blue beard tucked into a golden belt, and very bright eyes under his dark-green hood." This is a stark change from how Dwalin is shown in the movie, with a brunette beard and dark eyes.
While some readers have argued over the ages that it wasn't meant to literally be blue, others believe Dwalin's beard really was meant to be that way, in order to seem "otherworldly." When the script was written for the Hobbit film, Jackson opted to take out a lot of the whimsy to make it more in line with The Lord of the Rings, meaning Dwalin's blue beard was one of the first things to go.