Paper Summarizer
Summarize Research Papers and PDFs
Paste a paper link or drop a PDF file and get the key findings distilled into a structured summary. No signup required.
Academic Papers
URL or PDF upload, structured summary out
How do you summarize a PDF with AI for free? Send the PDF to @vustSummaryBot in Telegram and a structured summary comes back. The same tool runs here with two paths. Paste an arXiv, PubMed, or DOI link and the paper is fetched from the URL you provide. Or drop a PDF file: text is extracted locally in your browser, the file itself never leaves your device, and only the extracted text is sent for summarization.
See the difference
One link or one file, structured insight out. Works with any open-access academic paper.
How to use it
Paste an arXiv, PubMed, DOI, SSRN, or any academic paper URL — or drop a PDF file.
The tool fetches the paper content or extracts text from your PDF (up to 50 pages).
Get a structured summary highlighting the key findings, methods, and implications.
This tool handles
- PDF files up to 15 MB, parsed locally in your browser — the file never leaves your device; only the extracted text is sent for summarization
- Research papers, white papers, eBooks, business reports, technical documentation, lecture slides
- Multi-section documents — summary preserves section structure when the PDF has a clear table of contents
- Bullet, paragraph, key-takeaways, and TL;DR output formats with strict length caps
- Output language matches the user's interface language
- Document title (from the first page or PDF metadata) included in the summary header
Not in scope
- Scanned image-only PDFs without an OCR layer — there is no extractable text; run OCR first (Adobe Acrobat, Tesseract)
- Encrypted / password-protected PDFs — they can't be opened for extraction
- PDFs over 15 MB — split the document or extract the relevant section first
- PDFs where the layout matters as much as the text (visual diagrams, comic books, infographics) — the summary loses the visual
PDF summarisation works on text — not on layout, not on figures, not on equations rendered as images. The deep-dive below covers what survives the extraction, when an OCR pass is needed first, and how to scope the file for the best summary.
Frequently asked questions
Which paper sources are supported?
arXiv, PubMed, DOI links (doi.org), SSRN, Nature, Science, IEEE, ACM, Springer, Wiley, bioRxiv, medRxiv, and most open-access publishers. You can also drop a PDF file directly.
How does PDF upload work?
Your PDF is processed locally in the browser — text is extracted on your device, then only the text is sent for summarization. The file itself never leaves your computer.
What are the limits for PDF upload?
Maximum 15 MB file size, up to 50 pages, and up to 50,000 characters of extracted text. For most academic papers that covers the entire document; if an accepted PDF runs past either extraction cap, its summary uses the opening portion.
Does it handle long papers?
Papers longer than 50 pages are cut at page 50: the first 50 pages are read in order, and nothing scans ahead to pick the most relevant ones. A second cap of 50,000 extracted characters applies to the text pulled from those pages, so a very dense paper can be cut before page 50. For a thesis, submit the chapter you need as its own file.
Is this free to use?
Yes, within the free web allowance this page shares with every other Summary source: 3 summaries per browser, and one use comes back every 4 hours. @vustSummaryBot in Telegram has its own separate allowance of 3 short summaries a day.
Need to summarize papers on the go?
SummaryBot in Telegram handles the same links with credits and sharing.