How to Scan Documents on Android

Scanning documents directly on your Android phone turns the camera into a portable scanner, letting you create clean PDF or JPEG files of receipts, contracts, notes, and more without a dedicated scanner. You can do this with the built-in Google Drive app, which is preinstalled on most Android devices, or with a dedicated scanning app like Adobe Scan or Microsoft Lens. This guide walks you through the built-in method first, then covers alternatives and troubleshooting.

What You’ll Need

An Android phone or tablet with a camera.
The Google Drive app (free, usually preinstalled; download from the Play Store if missing).
Good lighting — natural daylight works best.
A flat, contrasting surface to place the document on.

Step-by-Step

Open the Google Drive app. Locate the Drive icon (a triangle with three colors) on your home screen or app drawer. If you don’t have it, install it from the Play Store first.
Tap the plus (+) button. It’s usually at the bottom-right corner of the screen. A menu will pop up.
Choose “Scan”. In the menu, tap the camera icon labeled “Scan”. This launches the camera in scanning mode.
Position the document. Place the document on a flat surface with good lighting. Hold your phone directly above it, parallel to the paper. Make sure the entire document fits within the frame.
Capture the image. Tap the shutter button (the white circle). Drive will automatically detect the edges of the document and crop it. If the auto-detection is off, you can adjust the corners manually by dragging the blue handles after the photo is taken.
Adjust the scan (optional). After capturing, you can drag the corner handles to fix the crop, or tap the color icon at the top to switch between Color, Grayscale, and Black & White modes. Tap the checkmark to accept the scan.
Add more pages (optional). If the document has multiple pages, tap the plus (+) icon in the bottom-right corner of the preview screen to scan another page. Repeat the process.
Save the scan. Tap the checkmark or “Save” button at the top. Drive will ask you to name the file and choose a folder. Pick a name, select a destination (like “My Drive” or a specific folder), and tap “Save”.
Find your file. The scan is saved as a PDF file in your chosen location. You can open it, share it, or email it directly from Drive.

Common Mistakes

Bad lighting: Shadows or glare cause washed-out or dark scans. Use diffuse light and avoid direct sunlight.
Holding the phone at an angle: If the phone isn’t parallel to the paper, the document will look skewed or trapezoidal. Hold it directly overhead.
Not checking the crop: Auto-detection can miss edges, especially on dark or patterned backgrounds. Always review and adjust the corners before saving.
Ignoring resolution: For text-heavy documents, a higher resolution (available in some apps) improves OCR accuracy. In Google Drive, the resolution is fixed; use a dedicated app if you need more control.
Saving as image instead of PDF: By default, Drive saves as PDF, which is best for sharing and archiving. If you need a JPEG, you’ll need a different app or convert later.

Tips

Use a dark background: Place the document on a dark or contrasting surface so the edge detection works better.
Enable auto-upload: In Drive settings, you can set “Camera uploads” to automatically back up your scans to the cloud.
Use OCR for text recognition: Google Drive performs OCR (Optical Character Recognition) on scanned PDFs automatically, making the text searchable. You can search for a word within the scanned document using Drive’s search bar.
Try a dedicated app for more features: Apps like Adobe Scan or Microsoft Lens offer higher resolution, perspective correction, and the ability to save as JPEG. They also often have better edge detection in tricky conditions.
Clean your camera lens: A smudged lens will make scans blurry. Wipe it with a soft cloth before scanning.
Batch scan: If you have many pages, scan them all in one go using the “add page” feature to create a single PDF.

Troubleshooting

Scan is blurry: Hold the phone steadier, or rest it on a stack of books to keep it stable. Ensure the camera lens is clean and the document is flat.
Edges are not detected: If the app can’t find the document edges, manually adjust the corners by dragging the blue handles. If that fails, try placing the document on a darker background.
Scan is too dark or too bright: Adjust the lighting. Move away from direct light or use a lamp to illuminate the paper evenly. Some apps have a brightness slider in the preview.
Google Drive scan option is missing: Make sure your Google Drive app is updated to the latest version. If it’s still missing, restart the app or your phone. Alternatively, use a dedicated scanning app.
File saves but is empty or corrupt: This is rare but can happen if the app crashes mid-save. Try scanning again, and ensure you have enough storage space on your device and in Google Drive.
OCR not working: OCR works best on clear, high-contrast text. If your scan is skewed or low-quality, the text may not be searchable. Rescan with better lighting and ensure the document is straight.

Frequently Asked Questions

Can I scan a document without an internet connection?

Yes. The scanning process happens entirely on your device. The scan is saved locally first, and then uploaded to Google Drive when you have a connection.

How do I save a scan as a JPEG instead of PDF?

Google Drive only saves scans as PDF. To get a JPEG, use a dedicated app like Adobe Scan or Microsoft Lens, which allow you to choose the output format, or convert the PDF to JPEG using a file converter app.

Can I edit the text in a scanned document?

Not directly. Scans are images of text. However, you can use Google Drive’s OCR to copy the text from the PDF (open the PDF, select the text, and copy it) and paste it into a document for editing.

Are my scans private?

Your scans are stored in your Google Drive account, which is private by default. Only you can see them unless you explicitly share the file or folder with others.

Can I scan a document that is larger than A4?

Yes. The camera can capture any size as long as the entire document fits in the frame. For very large documents, you may need to step back, but ensure the text is still legible.

Does scanning use a lot of storage?

A typical scanned PDF page is about 100-500 KB depending on resolution and content. Photos (JPEG) can be larger. Google Drive offers 15 GB of free storage, which is plenty for most document scans.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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