ChatGPT Prompt to Summarize a Document
Summarizing a document is one of the most requested tasks for ChatGPT, and for good reason: facing 50-page reports, dense scientific articles, or endless meeting minutes, saving time without losing the essentials has become a key skill. But a simple "summarize this text" often produces a flat result that misses important nuances. The difference between a mediocre summary and a truly useful one lies entirely in the quality of the prompt used. A good summary prompt must specify the expected format, the desired level of detail, the target audience, and the elements to prioritize. It should also guide ChatGPT on what not to do: invent information absent from the document, merge distinct ideas, or omit crucial numerical data. The prompts presented on this page are designed to extract the substance of a document while preserving its logical structure, key arguments, and conclusions. Whether you are a student facing a thesis, a professional dealing with an audit, or a researcher analyzing a literature review, you will find here the prompt suited to your exact need.
The prompt
You are an expert in document synthesis. I will provide you with a complete document. Your goal is to produce a structured summary that is faithful to the original text.
Instructions:
- Start with a hook sentence that captures the central thesis or main purpose of the document.
- Organize the summary into thematic sections with clear subheadings, respecting the logical structure of the original document.
- For each section, identify: the main idea, the key arguments or data supporting it, and the partial conclusions.
- Preserve all important figures, dates, proper names, and factual data.
- End with a "Key Takeaways" section in bullet list form (5 to 8 points maximum).
- Target length: about 20% of the original document's length.
- Never rephrase an idea in a way that could alter its meaning. In case of ambiguity in the text, indicate it in square brackets [ambiguity in the original text].
- Do not add any information, opinion, or interpretation absent from the source document.
Here is the document to summarize:
[PASTE DOCUMENT HERE]
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Why it works
This prompt leverages three key mechanisms: role assignment (expert in synthesis) activates a precise analytical register, numbered structural constraints eliminate ambiguity about the expected format, and the explicit faithfulness rule drastically reduces hallucinations. The 20% target forces the model to prioritize information rather than simply truncate the text.
Expected result
Variants by level
FAQ
What is the maximum document length ChatGPT can summarize?
How can I ensure ChatGPT does not distort the meaning of the original document?
Can I summarize a document in a different language than the original text?
Related prompts
How to use this prompt
- Copy the prompt with the button above.
- Paste it into ChatGPT, Claude or your favorite AI assistant.
- Replace the bracketed variables with your details, then refine the result.
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Prompt Guide is a free library of 4800+ ready-to-use prompts for ChatGPT, Claude and other AIs, with guides to learn prompting and tools to build and optimize your own prompts.
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