How to Scan a Document on iPhone and Android

How do I scan a document on my iPhone?

Use the Notes app, which comes with every iPhone. Open a note, tap the Attachment button and choose Scan Documents, then hold the phone over the page; in Auto mode it captures by itself. Drag the corners to fit, tap Keep Scan, add more pages and tap Done. Notes saves the scan in the note as a PDF.

1. Open Notes and open or start a note.
2. Tap the Attachment button (the Camera button on older iOS versions), then Scan Documents.
3. Hold the phone over the page; in Auto mode it captures by itself, or tap the shutter or press a volume button.
4. Drag the corners to fit the page, tap Keep Scan, and scan the next page.
5. Tap Done (Save on older iOS versions). The scan is kept in the note as a PDF.

To save the scan straight to a folder instead, open the Files app, tap the More button, choose Scan Documents, scan the pages the same way, then pick a location and tap Save. Apple describes both routes in its guide linked below.

How do I scan documents on Android?

Use the Google Drive app. Tap the camera button in the lower-right corner and point the phone at the page; a blue outline shows the crop. After the photo you can crop, rotate, switch to grayscale, clean marks, and add more pages. Tap Done, name the file, choose .pdf as the file type, pick a folder and tap Save.

1. Open Google Drive and tap the camera button in the lower-right corner.
2. Point the phone at the page and take the photo (manual or automatic capture).
3. Crop, rotate or clean the page, and add more pages if needed, then tap Done.
4. Name the file, choose .pdf, pick a folder and tap Save.

Can I turn photos of pages into a PDF?

Yes. If you already photographed the pages with the camera app, open JPG to PDF in your phone's browser, add the photos in page order, and save one PDF. iPhone photos in HEIC format work in HEIC to PDF. Nothing is uploaded. Crop away the desk around each page first if you can.

Scanner apps crop and flatten the page for you, which plain photos do not, so a scanner app gives a neater result when you have the paper in hand. Photos already taken can go straight into JPG to PDF or HEIC to PDF, and HEIC to JPG turns iPhone photos into JPG pictures for forms that ask for images.

Why is my phone scan so large?

Phone cameras take pictures with millions of pixels, far more detail than a page needs. Our three 12-megapixel test photos averaged 2.6 MB each, and put in a PDF as they were, they made 7.79 MB. Compress PDF at Balanced brought the same PDF to 0.59 MB, and Strong to 0.33 MB, under a 1 MB upload limit.

Made 2026-10-12 from three simulated 4032 × 3024 photos of printed pages (src/data/guides/phone-scan.test.ts), compressed with the same code as Compress PDF.

For email, see our guide to email attachment size limits; for what else takes up space, Why Is My PDF So Large?

How do I make a phone scan searchable?

Run it through OCR PDF. A scan is a picture of text, so search and copy find nothing until OCR reads the words and adds them as an invisible layer. Our OCR read 11-point print 100% correctly at 150 dpi, and it straightens pages tilted by up to 7 degrees before reading them.

Do OCR before compressing: it reads the sharper original, and the text layer it adds is tiny.