Screenwriting has one foot in craft and one foot in industry. The craft is about story — compelling characters, tension, scenes that move. The industry part is about format — a rigid, standardized set of conventions that every professional script follows. Mess up the craft and your script is boring. Mess up the format and your script gets set aside before anyone reads past page five.
This guide covers both: the formatting rules you need to know cold, the structure that gives your script its shape, and the deeper skill of writing for the camera — which is a fundamentally different discipline from prose fiction.
Screenplay Format: The Rules That Actually Matter
Screenplay format exists because one page of properly formatted script equals approximately one minute of screen time. A feature film is 90–120 minutes, so a feature screenplay should be 90–120 pages. Producers, agents, and coverage readers know this — and they use it to assess your story instinctively as they flip through.
Here are the core formatting elements:
Slug lines (scene headings). Every new location and time of day gets a slug line. They're always uppercase and always follow this format: INT. or EXT., then the location, then DAY or NIGHT. For example:
Action lines. These describe what the camera sees and what physically happens. They're written in the present tense, in short paragraphs, never more than three or four lines before a break. Action lines describe only what can be seen or heard — not what characters think or feel.
Character names and dialogue. A character's name is centered and in uppercase before every line of dialogue. The dialogue itself sits beneath it, indented. Keep it lean — real-world dialogue is compressed, not realistic.
Parentheticals. Brief performance notes in parentheses, placed between the character name and the dialogue. Use them sparingly — one or two per script, at most. Overusing them ("with a smile," "sadly," "angrily") is an amateur tell. The dialogue itself should convey the tone. If it doesn't, rewrite the dialogue.
Transitions. CUT TO:, FADE TO:, DISSOLVE TO: — these appear at the right margin between scenes. Modern scripts use them rarely. A simple scene break (a blank line and a new slug line) is usually all you need. "FADE IN:" opens every script; "FADE OUT." closes it.
Structure: The 3-Act Framework With Page Targets
The three-act structure isn't a formula — it's a map. Stories have been following this shape for thousands of years because it mirrors how humans process experience: setup, confrontation, resolution.
For a 110-page feature script, the page targets look like this:
- Act One (pages 1–25): Establish the world, the protagonist, the tone. The inciting incident — the event that disrupts the protagonist's normal life — should land around page 10–15. The act ends with a major turning point that locks the protagonist into the central conflict around page 25.
- Act Two (pages 25–85): The longest act. The protagonist pursues their goal, faces escalating obstacles, and is changed by the struggle. The midpoint (around page 55) should shift the story's direction — a revelation, a reversal, a raising of stakes. The act ends with the "all is lost" moment, the protagonist's lowest point.
- Act Three (pages 85–110): The protagonist, now changed, faces the final confrontation with all available tools. The climax resolves the central conflict. The denouement shows us the new world order.
These aren't strict rules. But if your Act Two turning point lands on page 60 instead of 85, readers will feel it — they'll sense the pacing is off even if they can't explain why.
The Most Common Formatting Mistakes That Get Scripts Rejected
Readers in Hollywood have stacks of scripts. Formatting mistakes signal inexperience and give a reader permission to stop reading. Here are the ones that show up most often in amateur work:
- Writing what can't be seen. "She thinks about her dead mother." The camera can't film a thought. Write what we see on her face, what she does with her hands, what she says. Behavior, not interiority.
- Overwriting action lines. Dense paragraphs of description slow the read and signal a novelist in screenwriter's clothing. Keep them short and punchy.
- Telling us how to feel. "The HAUNTING music swells as DETECTIVE COLE realizes — tragically — that he's been wrong all along." That's directing and musical scoring on the page. Just write what happens.
- Ignoring the courier font and margins. Industry standard is Courier 12pt with specific margin settings. Any other font breaks the one-page-per-minute rule and reads as unprofessional.
- Too much dialogue. Film is a visual medium. If your scenes are 80% people talking, you're writing a radio play. Show the conversation in behavior as much as in words.
Writing for the Screen vs. Writing Prose
"Show don't tell" is a common note in fiction workshops. In screenwriting, it's not a craft suggestion — it's the entire medium. If the camera can't see it or hear it, it doesn't exist in a screenplay. Period.
In a novel, you can write: "He had spent twenty years building walls around himself, and she was the first person to make him want to take them down." That sentence can't be filmed. Every insight about a character's internal world has to be externalized — shown in behavior, dialogue, choice, and action.
This is the deepest adjustment prose writers have to make. The craft moves from the inside out to the outside in. The reader infers the inner life from what they observe. That inference is where emotional resonance lives in film.
Writing Subtext Into Dialogue
The best screen dialogue is almost never about what it appears to be about. Characters rarely say exactly what they mean — and when they do, it feels flat.
Subtext is the gap between what a character says and what they actually mean, feel, or want. Two people arguing about whose turn it is to do the dishes are really arguing about who's carrying more of the relationship. A father asking his daughter if she's eaten today is really asking if she still needs him.
To write subtext, ask yourself: what does this character actually want in this scene? Then have them say something adjacent to it. Let the want leak through in word choice, in what they almost say, in what they conspicuously avoid. The audience will feel the tension between the surface and what's underneath — and that tension is where good dialogue lives.
If you're adapting your prose work into a screenplay, or writing long-form fiction and want tools that help you track scenes, characters, and structure, Auctore gives you a unified workspace for all of it. The project management and outlining tools work as well for screenwriters building scene maps as they do for novelists planning chapters.