How to Scan Documents to PDF on iPhone

The Notes app on iPhone has a built-in document scanner that creates multi-page PDFs automatically. It uses edge detection and perspective correction so your scans look straight even if you're holding your phone at an angle. This method is ideal for multi-page documents because Notes automatically stitches pages together into a single PDF. Once you've scanned your document in Notes, you can share it as a PDF directly from the app. Tap the share icon, then choose 'Save to Files' to export it as a PDF file. You can also share it via email, AirDrop, or any other app. The Notes scanner also applies automatic enhancements: it adjusts contrast, brightness, and removes shadows from around the document edges. The result is a clean, readable scan that's much better than a plain photograph.

1. 1Open the Notes app and create a new note (tap the pencil icon)
2. 2Tap the camera icon above the keyboard, then choose 'Scan Documents'
3. 3Position your iPhone over the document — it auto-detects the edges and captures automatically
4. 4Continue scanning additional pages if needed, then tap 'Save'
5. 5Tap the scan thumbnail in the note, then tap the share icon and choose 'Save to Files' as PDF

The Files app on iPhone (iOS 15+) has a built-in scanner that saves directly to iCloud Drive or local storage. This method is faster if you already work within the Files app and want to keep scanned PDFs organized in folders. To access it, open Files, navigate to the folder where you want to save the scan, tap the three-dot menu (…), and select 'Scan Documents.' The scanner interface is identical to Notes, with automatic edge detection and multi-page support. The advantage of Files over Notes is organizational: your PDF lands exactly where you want it, properly named and in the right folder. There's no extra export step required.

1. 1Open the Files app on your iPhone
2. 2Navigate to the folder where you want to save the scan
3. 3Tap the three-dot (…) menu at the top right
4. 4Select 'Scan Documents' from the dropdown menu
5. 5Scan your pages and tap 'Save' — the PDF is saved directly in that folder

While the built-in iOS scanner is excellent for everyday use, dedicated apps like Microsoft Lens, Adobe Scan, or Genius Scan offer additional features: OCR (optical character recognition) to make scans searchable, automatic naming based on content, cloud sync, and better image processing for low-light conditions. Microsoft Lens is free and particularly powerful. It offers whiteboard mode (great for scanning handwritten notes on whiteboards), business card scanning, and direct export to Word or PDF. Adobe Scan is also free and integrates with Adobe's ecosystem. For iPhone users who regularly scan receipts, business cards, or multi-page contracts, a dedicated app can save significant time through smarter automation.

1. 1Download a free scanning app such as Microsoft Lens or Adobe Scan from the App Store
2. 2Open the app and grant camera permission
3. 3Select the document type (document, whiteboard, business card, or photo)
4. 4Scan your pages — the app auto-captures and processes each page
5. 5Export as PDF and save to Files or share directly via email

Scanned PDFs from iPhone can be surprisingly large — often 3–10 MB per page at full resolution. This makes them inconvenient for email attachments, which typically have a 10–25 MB limit, or for uploading to web portals. LazyPDF's free online compressor handles scanned PDFs extremely well. It uses intelligent compression that reduces file size while preserving text legibility and image clarity. Most scanned PDFs compress to 60–80% smaller without visible quality loss. To compress: go to lazy-pdf.com/compress, upload your scanned PDF from your iPhone (use the Files app to access it), wait a few seconds, then download the compressed version. The process works entirely in your browser — your file is never stored on any server long-term. For scanned documents you plan to email, aim for under 5 MB. For documents going to government portals or court filing systems, check their specific size limits and compress accordingly.

Getting a clean scan depends heavily on lighting, surface contrast, and camera steadiness. Follow these tips to consistently produce professional-quality scanned PDFs from your iPhone. First, use natural daylight or bright overhead lighting whenever possible. Avoid harsh directional light that creates shadows across the document. If scanning on a desk, a lamp positioned to the side can create unwanted glare. Second, place the document on a contrasting background. A white paper on a white table is harder for the edge-detection algorithm to isolate accurately. Use a dark or colored surface to help the iPhone identify document edges. Third, hold your phone directly above the document, not at an angle. While iOS applies perspective correction, less correction needed means sharper text. Finally, for multi-page documents, keep your scanning session consistent — same lighting, same angle — so all pages look uniform in the final PDF.