How to Summarise a PDF on iPhone — Research Papers, Reports, Books
Summarising a PDF on iPhone in 2026 is one of those workflows that finally just works. Drop the file, pick depth, read. OCR runs automatically on scanned PDFs. The document stays inside your account — never trains AI models. Here is the workflow.
3 min
- · An iPhone with iOS 18+
- · The Summio app (free)
- · The PDF file
Get the PDF onto iPhone
Email it to yourself, save it via AirDrop from a Mac, or download from the source. iOS opens PDFs in Files; from there you can share to Summio. For research papers, the most common path is downloading the PDF directly from arXiv, JSTOR, or the journal site.
Open Summio, choose PDF
In Summio, tap "+" to add a source, choose PDF, pick the file. Summio detects whether OCR is needed (scanned PDFs) and runs it automatically before summarising.
Pick a depth
For triage of a 30-page research paper: short (90-second read). For genuine comprehension: medium. For study: long or detailed — the summary keeps abstract / methodology / results / limitations as distinct sections when the source is structured that way.
Chat with the document
After reading, ask: "What's the sample size?", "Which page reports the limitations?", "Is the dataset publicly available?". Every answer cites a passage and a page number.
Save to a collection
Save the summary to a thematic collection. For literature reviews, save 30 papers on a topic and chat across the collection: "Which papers report effect sizes above 0.5?".
- Scanned PDFs benefit from a 300 DPI scan in colour — modern OCR is 99%+ accurate on clean printed text but drops below 90% on bad scans.
- For very long scanned books (500+ pages), split the PDF first — Summio handles a few hundred pages comfortably, gigantic files may need to be chunked.
- PDFs you upload stay inside your account. They are not used to train AI models. Delete the source and it is gone within 30 days.
Common questions
Are scanned PDFs supported?
Yes — Summio detects scanned (image-only) PDFs and runs OCR before summarising. Modern OCR is 99%+ accurate on clean printed text.
How private is my upload?
Documents stay inside your account. They are not used to train AI models. Delete them at any time and they are gone within 30 days.
Is there a file-size limit?
A few hundred megabytes is fine for most research papers and reports. Very long scanned books may need to be split first.
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