Android phones can scan paper documents and save them as PDF without installing any third-party apps. Google Drive includes a built-in scanner that works on virtually every Android device, and major manufacturers like Samsung and Xiaomi add their own scanning tools as well. This guide covers all the main methods.
1. Scan with Google Drive (The Universal Method)
Google Drive’s scanner is pre-installed on most Android phones and produces clean PDFs directly:
- Open the Google Drive app. If it is not installed, download it from the Google Play Store.
- Tap the + button in the lower-right corner.
- Select Scan (the camera icon).
- Hold your phone over the document on a flat surface. The camera automatically detects and highlights the document edges.
- Tap the shutter button to capture. Google Drive auto-crops and corrects the perspective.
- Tap + to add more pages, or tap the checkmark to finish scanning.
- Name your PDF and tap Save. The file uploads to Google Drive and can be downloaded to local storage.
2. Scan with Google Lens
Google Lens is better suited for reading and copying text than for saving clean PDF scans:
- Open the Google Lens app, or access it from the Google app or your camera app.
- Point at the document or select an existing photo from your gallery.
- Lens recognizes the text automatically. Tap Copy text to copy the content.
- Google Lens does not save directly to PDF. For PDF output, use Google Drive’s scan feature, or paste the copied text into Google Docs and download as PDF.
Think of Google Lens as an OCR tool — excellent for extracting text, but not a replacement for a dedicated document scanner.
3. Samsung Built-In Scanning Features
Method 1: Samsung Notes
- Open the Samsung Notes app and create a new note.
- Tap the camera icon in the toolbar.
- Select Scan document.
- After scanning, you can annotate within Samsung Notes, then share as PDF via the Share → Save as PDF option.
Method 2: Bixby Vision in the Camera App
- Open the camera, tap More, and select Bixby Vision.
- Point at the document. Bixby Vision can copy text or identify content, but does not directly output a PDF.
4. Xiaomi (MIUI) Document Scanning
- Open the Camera app and switch to Document mode (found under More modes).
- The camera auto-detects the document edges. Tap the shutter to capture.
- Adjust the edge corners if needed, then confirm and save as an image.
- To convert to PDF: open the Gallery app, select the scanned image, tap Share → Print → select Save as PDF from the printer options.
Xiaomi’s built-in Notes (便簽) app also includes a scan feature with a similar workflow to Samsung Notes.
5. Google Pixel Phones (Stock Android)
- Pixel phones integrate Google Lens natively into the camera app for text scanning.
- For clean PDF output, using Google Drive‘s scan feature is the most reliable method on Pixel devices.
6. Tips for Better Scan Quality
- Place the document on a high-contrast background — white paper on a dark desk works best.
- Use good lighting. Avoid direct flash as it creates glare; natural daylight or overhead fluorescent light is ideal.
- Keep your phone steady at about 30 cm above the document to allow the camera to focus clearly.
- Most scan apps offer brightness and contrast adjustments after capture — use these to sharpen text.
7. Saving and Sharing Scanned Files
- Google Drive scan: Saves directly as PDF and syncs to the cloud automatically. Share via Drive link or download to local storage.
- Manufacturer apps: Typically save as JPEG images. To convert to PDF, use Print → Save as PDF or an online conversion tool.
- Scanned PDFs can be shared directly via Gmail, WhatsApp, Telegram, or any file-sharing app.
8. Troubleshooting
- Can’t find the Scan option in Google Drive: Update Google Drive to the latest version — the scan feature may be missing in older releases.
- Scanned text is blurry: Enable the auto-enhance option in Google Drive after scanning, or re-scan with better lighting.
- Scan is skewed: Manually drag the corner handles to correct the alignment — all major scan apps support manual edge adjustment.
For most everyday document scanning needs, Google Drive’s built-in scanner delivers excellent results on any Android phone. For further PDF processing — compressing, merging, or signing — use the free online tool below.
Do it in your browser — the file never leaves your device: PDF Tools
