Firstly, the film contains over-the-top, stylized costumes. Spiderman wears a sleek, red and blue tight suit with a logo of a spider on the front, while the Green Goblin wears a bright green set of armor with a menacing, green goblin helmet, with yellow eyes, and an open mouth. The costume is an important part of the superhero genre as it both shows what the character represents, but also conceals the characters actual identity. With these costumes, it is also easier to identify who is the hero and who is the villain; Spiderman is sleek with a blue and red costume, while the Green Goblin wear green military armor and looks threatening.
Another convention it uses is secret identities. Peter Parker keeps his identity secret, for fear of someone close to him getting hurt, and when the Green Goblin, who is Norman Osbourne, picks up on a clue and realizes that Peter Parker is Spiderman, he attacks and terrorizes Aunt May, which greatly affects Peter and makes him realize that being a superhero could cause collateral damage.
Also included in Spiderman is the convention of super powers. Peter Parker is bitten on a science filed trip by a radioactive, genetically-modified super spider, which alters Peter's DNA to make him be able to have super strength, be able to climb up walls, and be able to fire webs out of his wrists. Norman Osbourne uses a special performance enhancing chemical gas which gives him super strength, but at the cost of him losing his sanity.
All of these genre conventions, aswell as others which are present in the film, clearly fit into the Superhero genre, and give the audience a clear idea of what genre the film is that they are about to watch.
Another convention it uses is secret identities. Peter Parker keeps his identity secret, for fear of someone close to him getting hurt, and when the Green Goblin, who is Norman Osbourne, picks up on a clue and realizes that Peter Parker is Spiderman, he attacks and terrorizes Aunt May, which greatly affects Peter and makes him realize that being a superhero could cause collateral damage.
Also included in Spiderman is the convention of super powers. Peter Parker is bitten on a science filed trip by a radioactive, genetically-modified super spider, which alters Peter's DNA to make him be able to have super strength, be able to climb up walls, and be able to fire webs out of his wrists. Norman Osbourne uses a special performance enhancing chemical gas which gives him super strength, but at the cost of him losing his sanity.
All of these genre conventions, aswell as others which are present in the film, clearly fit into the Superhero genre, and give the audience a clear idea of what genre the film is that they are about to watch.

