Scan Documents With Your Phone and Create PDFs

Phone scanning versus flatbed scanners

Modern phone cameras exceed the resolution needs of letter-size text when lighting and focus cooperate. For receipts, contracts, and classroom notes, mobile capture is faster than a desktop scanner. Limitations appear with glossy magazines, very small type, and long multipage books where flatbed feeders win on consistency.

Browser-based scanners use getUserMedia for live preview, detect document edges, apply perspective transforms, and export PDF or image bundles. Processing on-device keeps ID scans and medical forms off third-party servers when you use privacy-focused tools.

Capture technique for readable OCR

Place the document on a contrasting surface, align parallel to the sensor, and fill the frame without cutting corners. Reduce glare by tilting slightly or diffusing overhead lights. Hold steady or brace elbows; motion blur destroys OCR accuracy more than moderate noise.

For multi-page scans, capture one page per shot with consistent margins, review thumbnails immediately, and delete blurry retakes before exporting. Grayscale or black-and-white modes improve text contrast for OCR at the cost of color information.

Export and sharing

Choose PDF when submitting to institutions; choose JPEG or PNG when a portal requests single images. Rename exports descriptively and verify file size limits. Delete camera rolls containing sensitive captures after secure transfer if policy requires.