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Scan to PDF
Turn phone photos or your camera into a clean multi-page PDF: edge detection, straightening, black and white.
Free, no uploads, no sign-up. Runs 100% in your browser.
How Scan to PDF works
The page is found as the largest bright shape in the photo, then straightened with a perspective transform you can fine-tune by dragging the corners. Cleanup uses auto levels for color and an adaptive threshold for crisp black and white. pdf-lib builds the PDF.
Input: JPG, PNG, HEIC, Camera. Output: PDF.
How to use Scan to PDF
- Drop photos of your pages, or press Use the camera.
- Check the corners on each page and drag them if needed.
- Pick Color, Gray or Black & white.
- Save all pages as one PDF.
Tips
- Encrypted PDFs must be unlocked first with Unlock PDF.
- Large scanned PDFs are mostly images. Compress PDF shrinks them the most.
- Your original file is never modified; you always download a new copy.
Scan to PDF FAQ
- Are my files uploaded?
- No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.
- Is it free? Are there limits or watermarks?
- Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.
- Does it work offline?
- Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.
Related tools
- OCR PDF: Recognise text in scanned PDFs and images in 10+ languages.
- Image to PDF: Combine JPG, PNG and WEBP into one PDF with page-size controls.
- Compress PDF: Shrink PDF size with smart image downsampling and stream compression.
- Merge PDF: Combine multiple PDFs into one ordered document with drag-and-drop sorting.