How to Scan Documents With an Android Phone (No App Needed)

Every Android phone can produce a proper PDF scan without installing anything. The trick is knowing which built-in tool does it, because it is not the camera app.

Method 1: Google Drive (available on virtually every Android phone)

1. Open Google Drive.
2. Tap the + button, bottom right.
3. Tap Scan.
4. Photograph the page.
5. Drive detects the edges and crops automatically. Drag the corners if it gets it wrong.
6. Tap + to add more pages, or the checkmark to finish.
7. Name the file and choose a folder, then Save.

The result is a genuine multi-page PDF, uploaded to Drive and shareable by link. This is the fastest route on a stock Android phone.

Method 2: Google Files (saves locally)

Better when you want the file on the phone rather than in the cloud.

1. Open the Files by Google app.
2. Look for the Scan option — it appears as a floating button or in the bottom bar.
3. Capture the page, adjust the crop, and add more pages if needed.
4. Save as PDF to local storage.

Method 3: The Camera app

Many camera apps now detect documents automatically and offer a Scan or Document shortcut when you point at a page. Google's own Lens does the same:

1. Open Google Lens (in the Google app or the search bar's camera icon).
2. Point at the document.
3. Choose Documents mode and capture.
4. Export as PDF, or copy the text straight out of the image.

Lens is the right choice when you want the text rather than an image — it will read the page and let you paste it anywhere.

On a Samsung Galaxy phone

Samsung has its own built-in scanner in the camera. See our dedicated guide to scanning on a Samsung phone for the exact steps — the short version is that pointing the camera at a document surfaces a Scan button automatically.

Getting a scan that is actually readable

Most bad scans are lighting problems, not app problems.

• Use indirect, even light. A window during the day is ideal. Overhead light directly behind you casts your own shadow across the page.
• Avoid flash. It produces a hotspot in the middle and dark corners.
• Use a contrasting background. A white page on a dark table lets edge detection work; white on white does not.
• Hold the phone parallel to the page, not at an angle. Auto de-skew corrects a little, not a lot.
• Flatten the page. A curved page from a book produces distorted text that OCR cannot read.

Choose the right output mode

Scanning apps offer filters, and the choice matters more than people expect:

For a form you need to email, black and white is usually both the most legible and dramatically the smallest file.

Reduce the file size

Multi-page colour scans get large fast, and many email systems reject attachments over 10 MB or so.

• Switch to black and white — often a tenfold reduction.
• Lower the resolution if the app offers it. 200–300 dpi is plenty for text.
• Scan only the pages you need.
• Share a Drive link instead of attaching the file. This sidesteps size limits entirely.

Extract the text from a scan

To get editable text rather than a picture of text:

• Google Lens — point, select the text, and copy. Works on a live camera view or on a saved image.
• Google Drive — right-click a scanned PDF at drive.google.com and choose Open with › Google Docs. Drive runs OCR and produces an editable document.
• The Recents screen — on Android you can select text directly from an app preview card, useful for grabbing text from an app that blocks copying.

Signing a scanned document

You rarely need to print, sign and rescan:

1. Open the PDF in Google Drive or a PDF viewer with annotation support.
2. Use the annotate / markup tool to draw your signature.
3. Save and share.

Adobe Acrobat Reader offers a Fill & Sign tool that stores a reusable signature, which is worth setting up once if you sign documents regularly.

Quick reference

Machine-readable version: Markdown source