How to Scan a Document to PDF on iPhone

You don't need a scanner to digitize paperwork anymore. Your iPhone camera plus the right app produces clean, perspective-corrected PDFs in seconds — here's exactly how.

The quick answer

Open a scanner app, point your camera at the page, and let automatic edge detection capture it. The app straightens the page, cleans up the lighting, and saves the result as a PDF you can share by email, Messages, or AirDrop.

Step-by-step: scan a document to PDF

1. Lay the document flat on a surface with contrast — a dark table under white paper works best.
2. Open Mobile Document Scanner and tap the scan button. Hold your iPhone level above the page.
3. Let edge detection do the work. The app finds the page borders and captures automatically — no need to line things up perfectly, perspective correction straightens the result.
4. Apply a filter if the lighting was uneven. A black-and-white or contrast filter makes text pop and looks professional.
5. Save as PDF. Your scan is ready to share, sign, or file away.

What about the built-in Notes app?

iPhone's Notes app can scan documents too, and for a one-off scan it's fine. Where a dedicated scanner app earns its place is everything after the capture: extracting text with OCR, scanning batches into one file, signing, compressing, and keeping your documents organized in one library instead of scattered across notes.

Scanning multi-page documents

For contracts or forms with several pages, use batch mode — capture each page in sequence and the app assembles everything into a single, ordered PDF. See the full guide on scanning multiple pages into one PDF.