Synopsis Generator
A polished synopsis is the difference between a request and a rejection. Generate logline + 1-page + full synopsis tailored to your genre.
Like this tool? Imagine the rest of BookOS.
BookOS gives you AI writing, character bibles, outline editor, originality checks, and one-click export — all in one calm workspace.
How it works
Describe your story
Genre, setting, protagonist, antagonist, and what happens.
Generate
AI returns a logline, short synopsis, and full synopsis.
Edit & submit
Polish the output for your query letter, blurb, or pitch.
Tips for best results
- Always include the ending in your premise — synopses must reveal the ending.
- Be specific: ‘a disgraced surgeon’ beats ‘a doctor’.
- Generate twice and merge the strongest sentences from each.
Frequently asked questions
What is a logline?
A one-sentence (≤25 words) hook that captures the protagonist, conflict, and stakes.
Should a synopsis spoil the ending?
Yes. Agents and editors expect the full ending in synopses.
What length do agents want?
Most ask for 1–2 pages. Our short synopsis (~150 words) and full (~500 words) cover both.
Can I use this for non-fiction?
Yes — frame premise as your book's argument and audience problem.
Is it really free?
Yes. No signup. Generate unlimited synopses.
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