Scan documents to PDF in your browser
ScanPDFOnline is a free online document scanner that works entirely in your web browser. Take a photo of a contract, receipt, form, ID card, handwritten notes, whiteboard, textbook page or business card, apply a document-scanner filter, and export it as a proper multi-page PDF. There's no software to install, no account to create, and no file leaves your device at any point.
The scanner works on desktop, laptop, tablet and mobile browsers. On a phone, tap Use camera and point at the document — the browser will use your rear camera at up to 1080p. On a laptop or desktop, you can either use the webcam, drag & drop image files onto the page, or click Upload image to pick existing photos. Multiple pages combine automatically into a single downloadable PDF.
How the scanner filters your documents
Every captured or uploaded image runs through a light image-processing pipeline that's tuned for paper and screens. You can switch between four looks per page:
- Original keeps the photo exactly as taken — useful when the document is coloured (a photo ID, a receipt with a company logo, a coloured form).
- Auto-enhance is the default. It boosts contrast and mid-tone brightness so paper looks whiter and ink looks darker, and lifts saturation just enough to keep signature ink readable. This is the closest look to what CamScanner and Microsoft Lens produce.
- Grayscale removes colour, giving you a clean black-and-white document that's easy to print and small on disk.
- Black & White uses an adaptive threshold based on the mean brightness of the image, so paper turns pure white and text turns pure black. It's the smallest file size and looks the most like a real desktop scanner.
Why scan documents online instead of using an app?
Dedicated apps like CamScanner and Adobe Scan work well but add friction: they need installation, they ask for permissions on your phone, most now push a subscription with watermarks on the free tier, and some upload your documents to their own servers for OCR or cloud sync. A browser-based scanner sidesteps every one of those.
- No install. Works on any device with a modern browser — iPhone, Android, Chromebook, Windows, Mac, Linux.
- Nothing uploaded. The camera stream, filtering and PDF export all happen in your browser. Your document does not travel over the internet.
- No watermarks or page limits. Scan as many pages as you want into one PDF, completely free.
- No account. There is no sign-up wall, no email required, no cookies used to identify you.
Common uses
People use ScanPDFOnline to digitise contracts before emailing them, submit receipts for expense reports, upload ID documents to bank and government portals that only accept PDFs, save lecture notes and whiteboard photos as searchable references, archive physical letters, and turn phone photos into professional-looking PDF attachments. It's equally at home for a one-page scan on desktop and a fifty-page thesis draft on mobile.