Getting the truth out of a long PDF

What it is good at

• Can hold very long documents, contracts, reports, whitepapers, in one pass.
• Good at spotting internal contradictions across a long document.
• Can be asked to quote exact lines rather than paraphrase, which matters for legal or financial reading.
• Fast way to know if a document is worth reading in full before committing the time.

Where it falls short

• It can miss nuance in dense technical or legal language without a specific instruction to slow down.
• It's still a summary tool, for binding legal or financial documents, get a qualified professional's read too.
• Very long or scanned/image-based PDFs may need cleanup before upload.

How to use it for creative work

1. 01

   State why you're reading it

   Tell the model what decision or question you're bringing to the document. 'I need to know if this contract obligates us to X' produces a sharper read than a general summary request.

2. 02

   Ask for implications, not a summary

   Request the decisions the document implies, the contradictions inside it, and the questions it leaves unanswered, this is far more useful than a paragraph restating the content.

3. 03

   Ask it to quote, not paraphrase, the risky parts

   For anything with legal or financial weight, ask it to quote the exact line and page or section reference, rather than paraphrasing, so you can verify it against the source directly.

4. 04

   Get the ten-decision list

   Ask for the ten decisions this document implies you now need to make, which is often more useful for planning than a content summary.

5. 05

   Verify anything that changes money or liability

   Before acting on any clause involving payment, liability or deadlines, read that specific section yourself or have a qualified person confirm it, don't rely solely on the summary for binding terms.

Ready-to-use prompts

I'm attaching [document]. Do not summarise it. Instead, list: the ten decisions it implies I need to make, the three contradictions inside it, and the five questions it leaves unanswered.

Find every clause in this document relating to [payment/liability/deadlines/termination]. Quote the exact text with a section or page reference for each, rather than paraphrasing.

Based on this document, tell me in three sentences whether it's worth reading in full given that I care about [your specific concern], and what section I should prioritise if time is short.

Compare this new document against the previous version I'm also attaching. List exactly what changed, quoting both old and new text for each change.

Rewrite this section in plain English for someone with no legal or technical background, without softening or omitting any obligation or risk it describes: [paste section].

Questions people ask

Is this safe to use for a legal contract?

Use it to understand and triage a contract quickly, but have a qualified legal professional review anything you're about to sign, it's a reading aid, not legal advice.

What if the PDF is a scanned image?

Run OCR first if the model can't extract text directly; a scanned image with no text layer often can't be read reliably.

How long a document can it handle?

Very long, Claude in particular handles book-length documents in one session, though extremely large files may need splitting depending on your plan.