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Summarise a PDF

A 40-page report, contract or research paper takes hours to read. You usually only need the key points — but skimming risks missing something important.

Tool

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Why this works

Our AI summariser reads the entire PDF and returns a structured summary: TL;DR, key points, decisions, and risks/open questions. Long documents are summarised in sections, then rolled up.

Long documents accumulate faster than you can read them. Most knowledge workers face a stack of unread PDFs at any given moment: the quarterly report you need to skim before a meeting; the contract draft a counterparty sent over the weekend; the 30-page research paper a colleague flagged as relevant; the policy update from compliance. Reading every one in full is impossible; skimming risks missing the one consequential paragraph that changes everything.

AI summarisation reframes the problem. Rather than choosing between full read and skim, you get a structured summary at the depth you need: a 3-line TL;DR for meeting prep, a single-page summary for daily triage, or a section-by-section detailed overview for documents you\'ll cite in your own writing. The summary surfaces the document\'s key claims, decisions, and open questions so you can decide — with informed context, not just topic familiarity — whether to commit to a full read.

What the summariser actually does, by depth. TL;DR (3 lines): the document\'s single most important takeaway, its central recommendation or finding, and any critical caveat or risk. Suitable for triage where you need to know whether a document is relevant at all. Standard (1 page): structured summary covering the document\'s purpose, main arguments or findings, key supporting evidence, and any decisions or recommendations. Suitable for understanding a document\'s content without reading it in full — the right call for routine consumption of reports, contracts, and articles. Detailed (section-by-section): walks through the document\'s structure, capturing each section\'s claims, evidence, and conclusions. Roughly 600–1000 words for a 40-page source. Suitable when you\'ll cite the summary in your own writing or make a decision that depends on the document\'s argumentation.

What the model is good at. Extracting key claims and decisions: the model is trained to identify what a document is actually saying versus what\'s background or padding. Numbers, dates, names, and stated commitments come through reliably. Summarising structured documents: reports, contracts, policy documents, and research papers — anything with a clear hierarchy of claims — summarise cleanly. Multi-language summaries: ask for the summary in any of 30+ languages the model supports; useful for documents in one language consumed by readers in another.

Where to verify. Critical numbers: any specific figure that matters for a decision should be verified against the source document, not relied on from the summary alone. Quotes attributed to specific people: AI summaries can occasionally compress multiple statements into one, blurring attribution. Negative claims: "the document does not address X" is harder to verify than positive claims; for completeness verification on a specific topic, search the document directly. Nuanced legal or technical conclusions: summaries are useful triage but not authoritative interpretation; for legally consequential or technically detailed content, treat the summary as a navigation aid, not a substitute for reading.

Document types where summarisation is particularly valuable. Long-form contracts and agreements: get the gist of clause-level structure before line-editing. Quarterly and annual reports: surface management commentary, key financial signals, and risk factors without page-by-page reading. Academic papers: triage relevance before committing to a full read — especially useful for literature reviews. Policy documents and compliance updates: catch what changed, what\'s required of you, and any deadlines, without absorbing the whole regulatory text.

A workflow note for stacks of similar documents. When you have 10+ PDFs of the same type (10 supplier contracts, 10 research papers, 10 monthly reports), the comparative value of summarisation rises sharply — you can read 10 one-page summaries in 20 minutes and then commit to fully reading only the 2 that warrant it. For document triage at scale, the Standard or TL;DR depths are usually the right pick rather than Detailed.

How it works

  1. 1
    Open the summarise tool
    Tap the orange button above to launch the AI summariser. Defaults to Standard depth.
  2. 2
    Upload the PDF
    Drop in any text-based PDF up to 25 MB on free, 1 GB on Pro. Scanned PDFs run through OCR automatically before summarisation.
  3. 3
    Choose summary depth
    TL;DR (3 lines, for triage), Standard (1 page, for routine consumption), or Detailed (600–1000 words, citation-quality).
  4. 4
    Wait for the summary
    Processing typically takes 15–40 seconds depending on document length and chosen depth.
  5. 5
    Read, save, or share
    View the summary inline, save as Markdown for note-taking systems, or export as Word for editorial use. Files auto-delete from our servers within one hour.
Who this is for

Real-world uses

Researchers

Triage a stack of papers — read the one-page summary, then deep-dive only the 2–3 most relevant.

Legal teams

Get the gist of a long contract before committing to line-editing; identify unusual clauses for closer review.

Executives

Brief yourself on quarterly reports, board materials, and strategic documents without reading every page.

Students

Build study notes from textbook chapters and lecture PDFs as a foundation for active reading.

Investors

Filter through a stack of pitch decks, earnings reports, or research notes to find the ones worth a full read.

Policy analysts

Catch what changed in regulatory updates and compliance documents quickly.

FAQ

Common questions

How accurate is the summary?

For straightforward documents (reports, articles, contracts), highly accurate — the model summarises what the source says without making up facts. For nuanced argumentative documents, the Detailed depth captures more subtlety than TL;DR. Verify critical numbers and quotes against the source before relying on them for decisions.

Are my files used for training?

No. Files and summaries are deleted within 60 minutes and never used to train any model. The extracted text is processed by an AI service to generate the summary; for highly sensitive documents weigh whether AI summarisation is appropriate versus reading directly.

Can it handle non-English?

Yes — summarisation works in 30+ languages. Ask for the summary in any of those languages, including cross-language work (summarise a French document in English, for example).

Does it work on scanned PDFs?

Yes — OCR runs automatically to extract the text first, then the summary works on the extracted text. Summary accuracy on scans tracks OCR accuracy; clean modern scans produce summaries indistinguishable from born-digital sources.

How long can the source PDF be?

Practically 80–100 pages produces the best summaries. Longer documents are summarised but may smooth over distinctions between sections — consider using Extract Pages to break very long documents into thematic chunks and summarising each separately.

Can I ask follow-up questions?

Not in this tool — it produces a single written summary, not an interactive chat. For deeper exploration, the summary often answers the most common questions; for further questions, search the source PDF directly (Cmd-F after OCR if it was a scan).

What output format do I get?

Markdown by default — opens in any text editor, copies cleanly into Slack/email/Notion/Obsidian with formatting preserved. Word export available for editorial workflows.