PDF Summarizer (Key Sentences)
Surface the core points of long PDFs fast.
Summarize PDF documents into key sentences instantly in your browser — free online PDF summarizer extracts the main points, no upload.
Calculator Inputs
About Summarize PDF
Surface the core points of long PDFs fast.
Extracts sentences from the first 25 pages, scores them by how often their words recur across the document (stop-words removed), and returns the most representative sentences — an extractive summary, no AI servers needed.
Where it is used
Digesting reports, prep for meetings, reading contracts, note-taking.
How to use the Summarize PDF
- PDF File (first 25 pages analyzed) — select a file (application/pdf,.pdf) — Up to 50 MB. Text-layer PDFs only..
- Key Sentences to Extract — enter the value (e.g. 8).
- Calculate — press the Calculate button to see the result instantly above.
Formula
Extractive summarization: term-frequency scoring of sentences → top N keys.
Examples
Example
sentences:6
Result: 6 key sentences from a 30-page report
Frequently Asked Questions
- Is this an LLM summary?
- No — it is a statistical/extractive summary computed locally. Fast and private, with a different style than generative AI.