Screenwriting, also called scriptwriting, is the art and craft of writing scripts for mass media such as feature films, television productions or video games. It is often a freelance profession.

Screenwriters are responsible for researching the story, developing the narrative, writing the script, screenplay, dialogues and delivering it, in the required format, to development executives. Screenwriters therefore have great influence over the creative direction and emotional impact of the screenplay and, arguably, of the finished film. Screenwriters either pitch original ideas to producers, in the hope that they will be optioned or sold; or are commissioned by a producer to create a screenplay from a concept, true story, existing screen work or literary work, such as a novel, poem, play, comic book, or short story.

The stages of script writing are -

Spec script writing

Spec scripts are feature film or television show scripts written on speculation of sale, without the commission of a film studio, production company or TV network. The content is usually invented solely by the screenwriter, though spec screenplays can also be based on established works or real people and events. The spec script is a Hollywood sales tool. The vast majority of scripts written each year are spec scripts, but only a small percentage make it to the screen. A spec script is usually a wholly original work, but can also be an adaptation.

Commissioned screenplay

A commissioned screenplay is written by a hired writer. The concept is usually developed long