Summarize PDF, by its key sentences
PDFCheetah's free Summarize PDF tool picks out the sentences that carry a PDF's main points in your browser — each with its page, with no AI model — and your file never leaves your device.
Updated
Choose a PDF file to summarize
One file · up to 80 MB · PDF bytes are checked on this device
Processed on this device
Selecting and processing files stays in this browser.
Checking offline readiness
Offline availability is confirmed after this tool loads.
Why there is no daily limit, and no upload
How to summarize a PDF
- Open the PDF — a report, a paper, an article, a long contract.
- Choose the pages and how long the summary should be.
- Select Summarize, then read it on the page, copy it, or Download it as a .txt file.
How the sentences are picked
Every sentence is scored by how many of the document’s most important words it carries, where it sits — the opening of a section counts for more — and how much it repeats what is already picked. The best are kept in the order they appear, each with its page number, with the document’s key terms listed underneath. No AI model is used and nothing is uploaded: the summary is worked out in this browser tab.
Current limitations
This is an extract, not a rewrite: it picks sentences, it does not shorten or combine them, and it cannot answer questions about the document. It works best on English prose; tables, slides and forms summarize poorly. A scanned page has no words to read. Password-protected PDFs cannot be opened here yet: use Unlock PDF first if you know the password.
Common questions
- Is my PDF uploaded to summarize it?
- No. The text is read and the summary is worked out in your browser, on this device. Nothing is sent anywhere.
- Does it use AI?
- No. No AI model is used. Every sentence is scored by how many of the document's most important words it carries and where it sits, and the best are kept in the order they appear. Nothing is rewritten, so nothing is made up.
- Is the summary written in its own words?
- No. It is made of the document's own sentences, each with its page number, with the document's key terms listed underneath. It does not shorten, combine or reword sentences, and it cannot answer questions about the document.
- How long is the summary?
- Short is about five sentences, Medium about ten or a tenth of a long document, and Long about twenty or a fifth of one.
- Which documents summarize well?
- English prose, such as reports, papers, articles and contracts. Other languages written in Latin letters get a simpler pick. Tables, slides and forms summarize poorly, and a scanned page has no words to read.