In the house where Leatherface and his family live, human bones are found throughout. A couch made out of bones, a chair with human limbs as armrests.
Most of The violence is actually all left to the imagination of the viewer, and this is true. Director Tobe Hooper was actually aiming to secure a PG rating by the MPAA.
An obviously psychopathic man shows off pictures of slaughtered animal corpses to other characters. You can't really see the photos, only slightly.
A woman is hit over the head with a hammer on camera repeatedly. Not very graphic, but disturbing. She survives.
No injury detail is visible throughout the film besides a small cut. All violence is offscreen or craftily obscured due to camera angles.
Not as violent as some of the later films in the franchise.
Mildly bloody no gore.
Compared to other slashers like Friday the 13th or Halloween, The violence is more psychological and disturbing than extremely bloody.
A dead armadillo is seen by the side of the road. Unsettling, but hardly any blood.
A crazed man cuts his own arm with a straight razor. He then slashes another man's arm.
Leatherface kills a man via chainsaw to the chest. Blood is seen splattering onto his apron. However, since the death scene is shot from behind, no gore or injury detail is seen.
In one of the film's most infamous scenes, Leatherface suddenly pops out from a door and hits a man across the face with a sledgehammer. The man is seen on the ground, before he is dragged away into a room and presumably killed offscreen. The scene comes out of nowhere, and is still violent although no gore is used.
A woman's body is found stuffed inside an ice box. She lunges out at a man who passes by, before Leatherface shoves her back in.
By the end, one of the protagonists is covered in blood.
A woman's thumb is bleeding after being cut and an old man sucks the blood.
Leatherface's mask is an actual person's face, dried after having been removed by him. The removal and making of the mask is not shown.