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How to Scan Documents into Sharp PDFs Using Only Your Phone

A step-by-step guide to scanning documents into sharp PDFs with your phone: preparation, capture technique, and pro tips.

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Scan tài liệu thành PDF sắc nét bằng điện thoại với Synapp

Why scan with your phone?

Your phone camera is a capable document scanner — fast, free, and always with you.

Steps

  • Flatten the paper on a contrasting surface.
  • Shoot in even, natural light; keep the phone parallel.
  • Use PDF Scanner in Synapp: auto edge detection, contrast boost, multi-page export.
  • Name files clearly and back them up.

Scan contracts, IDs, transcripts, and receipts — all in one free tool.

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