Google Docs is where many writers do their best work — but out of the box, it has no idea what a slugline is. Here's how to close that gap, with practical tips that apply to any formatter and a step-by-step walkthrough for CineFormat AI.
Screenplay format is not decorative. Industry readers use it to instantly locate scenes, identify speaking characters, and estimate screen time. A page formatted correctly in Courier New 12pt with the right margins runs to roughly one minute of screen time — a 90-page feature is approximately a 90-minute film. Get the formatting wrong and you signal to a reader that the script is from an amateur, before they've read a single line of dialogue.
The problem with Google Docs is that it was built for reports, letters, and essays — not screenplays. There are no built-in paragraph styles for scene headings or character cues, no automatic dialogue indentation, and no one-click PDF export that preserves screenplay margins. Writers who try to format manually spend more time fixing tabs than writing scenes.
A screenplay formatter solves this by handling the structural rules so you can stay focused on the story.
Resist the urge to format as you go. Write your draft in plain prose — get the scenes, dialogue, and beats down without worrying about indentation or caps. Most formatters, including CineFormat AI, work best when they have complete, clearly structured content to process. Trying to format a half-finished scene wastes time and can obscure story problems you'd spot more easily in plain text.
Every screenplay element — scene heading, action line, character name, dialogue — should live on a separate line. This is how formatters identify what type of line they're looking at. If you run a character name directly into dialogue on the same line, the formatter may misread it. A simple habit: one element per line, always.
Formatters look for patterns to detect scene headings. Help them out by starting every slugline with INT. or EXT. — even in a rough draft. This single habit makes automatic detection far more reliable and reduces the amount of manual correction you need afterward.
No formatter is perfect. After you run your script through any tool, read through the result at least once before exporting. Look for dialogue that got misidentified as action, or character names that weren't uppercased. A quick review pass catches the edge cases that automated tools occasionally miss.
PDF is the standard for submissions to contests, agents, and production companies. If you're handing your script off to someone who works in Final Draft, export to .fdx instead. Knowing which format your recipient expects saves a round trip of emails.
CineFormat AI is a Google Docs add-on built specifically for this workflow. It runs inside Google Docs — no separate application, no copy-pasting between programs.
Open the Google Workspace Marketplace and search for CineFormat AI, or use the install link on the CineFormat AI homepage. Click Install and grant the requested permissions. The add-on appears in your Extensions menu once installation is complete.
Open any Google Doc containing your screenplay draft. The document doesn't need to be pre-formatted — plain prose, rough notes, or a draft written in any style will work.
In the Google Docs menu bar, go to Extensions → Screenplay Formatter → Open Sidebar. The CineFormat AI panel opens on the right side of your document.
You have two options here. You can paste unformatted text directly into the sidebar and click Convert to Screenplay — the formatted result is inserted into your document. Or you can select a portion of text already in the document and choose Convert Selected Text to format just that section. The add-on uses the Google Gemini API to detect and apply the correct screenplay element type for each line.
If any lines need adjustment, use the sidebar's custom styling options to modify font, size, color, or indentation for individual paragraphs. This is faster than manually adjusting paragraph styles through the Google Docs menus.
When your script looks right, export directly from the sidebar. Choose PDF for a submission-ready file with correct margins and Courier New 12pt, or Final Draft (.fdx) to hand off to collaborators or continue editing in Final Draft.
One underrated advantage of formatting inside Google Docs is that collaboration just works. Your co-writer, script editor, or director can open the same document and leave comments in real time — something standalone screenwriting applications handle poorly or not at all. CineFormat AI preserves all of Google Docs' sharing and commenting features, so you get industry-standard formatting without giving up the tools your team already relies on.
Ready to try it?
Install CineFormat AI free from the Google Workspace Marketplace and format your first screenplay in minutes.
Install CineFormat AI — FreeAlso see: Screenplay Format Guide • Full Formatting Walkthrough • FAQ