How to Scan Documents to PDF on Android for Free

Google Drive comes pre-installed on virtually all non-Samsung Android phones and is available on Samsung devices too. Its document scanner is the most capable built-in option available on Android — it features automatic edge detection, perspective correction, contrast enhancement, and multi-page capture. The scanned documents save as PDFs directly to your Google Drive, where they're accessible from any device. You can also save them locally.

1. 1Open the Google Drive app on your Android phone.
2. 2Tap the blue plus (+) button in the bottom-right corner.
3. 3Select 'Scan' from the menu (camera icon).
4. 4Point your camera at the document — blue corner markers show the detected edges.
5. 5Tap the circular shutter button to capture the page.
6. 6Tap the + button to add more pages to the same PDF.
7. 7When all pages are scanned, tap the checkmark button.
8. 8Name your PDF and choose a folder, then tap Save.
9. 9The PDF appears in your Drive — tap the three dots and select Download to save locally.

Google Lens (built into the Google app and accessible from the Google Search bar) provides a fast alternative for single-page scanning. While it doesn't create PDFs directly, it excels at scanning text and can export recognized text to Google Docs, which you can then convert to PDF. Lens is particularly good for photographing documents in imperfect conditions — bright sunlight, uneven lighting, or slightly damaged pages. Its scene understanding applies enhanced preprocessing that dedicated scanner apps sometimes miss. To scan with Lens: open the Google app, tap the Lens icon (colorful camera), point at your document, tap the text tool, and select 'Copy text' or 'Copy to Clipboard.' You can then paste into Google Docs and export as PDF, or use a browser tool to turn your text into a formatted document. For full PDF output from Lens: copy the recognized text, open Google Docs, paste and format, then File → Download → PDF Document. Samsung users: Samsung Notes includes a 'Scan document' feature that saves as PDF or image directly to your phone — tap the pen icon → Add content → Image from camera, then use document mode.

If you've already photographed your document pages (or prefer not to use Drive's cloud storage), Chrome-based tools work on any Android device without any app installation. For combining multiple document photos into a single PDF: open Chrome on Android, navigate to LazyPDF Image to PDF, tap the upload area, select your document photos from your gallery, arrange them in the correct order, and tap Convert. The resulting PDF downloads to your Downloads folder. For adding OCR to make the text searchable: after creating your PDF, upload it to LazyPDF's OCR PDF tool. The entire process takes under three minutes and requires no app installation or account creation. For handling secure documents: LazyPDF processes in the browser — your files don't leave your device for server processing. This is an important privacy advantage over cloud-scanner apps that store copies on their servers. The Chrome method works on any Android device regardless of age or manufacturer — as long as you have a working Chrome browser, you can scan and convert documents.

If you scan documents regularly and want a more polished dedicated experience, these free Android apps are the best options: Microsoft Lens (free, no subscription): Microsoft's document scanner is excellent, with smart whiteboard detection (perfect for meeting notes), table mode, and direct export to Word or OneNote. Available free on the Play Store. Privacy note: uploads to Microsoft servers. Adobe Scan (free with Adobe account): great auto-detection, good OCR in the free tier, and integration with Adobe Creative Cloud. Free users get 25 free pages of OCR per month. CamScanner (freemium): the original Android scanner app. The free tier now includes watermarks on exports — the paid version removes them. Less recommended since Google Drive built-in became excellent. Stackable Scanner (free): open-source, privacy-focused scanner app that processes locally. Less polished than commercial apps but good for users prioritizing privacy. ClearScan (free): specifically optimized for scanning receipts and business cards with excellent perspective correction for small documents. For most users, Google Drive's built-in scanner handles all their needs without installing anything extra.