The Short Version
Your iPhone already has a document scanner built into the Notes app, no download required. It detects the edges of a page, corrects perspective, and exports to PDF. This guide covers the built-in scanner, then the specific spots where its output is inconvenient to reuse and how to fix that.
The Built-In Scanner (Fastest Method)
- Open Notes and create or open a note.
- Tap the camera icon above the keyboard, then choose Scan Documents.
- Point the camera at the page. iPhone auto-detects the edges and captures automatically when the page is steady (or tap the shutter to capture manually).
- Drag the corner handles if the auto-detected edges are off, then tap Keep Scan.
- Repeat for additional pages, then tap Save. The scan is saved as a PDF inside the note.
To scan without opening Notes first: swipe to open Control Center and add the Scan Documents control (Settings > Control Center > add "Scan Documents"), or ask Siri to "scan a document."
Signing a Scanned Document
Open the scanned PDF in Notes (or Files), tap the share icon, choose Markup, then tap the "+" icon and select Signature to add a saved signature or draw a new one. Save, then share the signed PDF via Mail, Messages, or AirDrop.
When to Use the Files App Scanner Instead
The Files app has its own, separate document scanner (Files > Browse > three-dot menu > Scan Documents) that saves directly as a standalone PDF file rather than embedding it inside a Notes note. Use this route if you want the PDF to live in iCloud Drive or a specific folder immediately, rather than extracting it from a note afterward.
Reusing Text From a Scanned Document
Scanned PDFs made this way are searchable and their text is selectable, thanks to Live Text running automatically on the scan. This is where the built-in scanner's biggest limitation shows up: copying is still governed by iPhone's single-item clipboard, so copying a name from page one, then an address from page two, loses the name the moment you copy the address.
If you regularly extract multiple fields from scanned documents (an invoice's line items, a form's multiple fields, a contract's key clauses), a clipboard manager like ClipboardAI keeps every copy from the document in a searchable history instead of overwriting the last one, so you can copy five fields from a scan and paste all five somewhere else without re-opening the PDF five times.
Common Problems and Fixes
Scanner won't auto-detect the page edges: Use a plain, contrasting background (a dark desk under a white page) and even lighting. Manual corner-drag is the fallback if auto-detect keeps missing an edge.
Text in the scan isn't selectable: Live Text needs the scan to be reasonably sharp and well-lit. Re-scan the page rather than trying to extract text from a blurry capture.
Scan looks washed out or shadowed: After capturing, tap the scan and use the filter options (Notes offers Color, Grayscale, Black and White, and Photo) to improve contrast, especially for Black and White on text-heavy pages.
Frequently Asked Questions
Do I need a third-party app to scan documents on iPhone?
No. The built-in Notes app (and separately, the Files app) both include a document scanner with automatic edge detection, perspective correction, and PDF export at no cost.
Can I sign a document I scanned on iPhone?
Yes. Open the scanned PDF, use the Markup tool, and add a signature (saved or newly drawn) directly on the document before sharing it.
Why can't I copy multiple fields from a scanned PDF at once?
iPhone's system clipboard holds one item at a time regardless of the source, so copying a second field from a scan overwrites the first. A clipboard manager that keeps a running history removes this limitation.