Scan Documents to PDF with Your Camera
Scan paper documents to PDF using your phone or webcam. Adjust 4-corner perspective crop, apply high-contrast filters, and export a clean PDF locally.
1. Capture or Upload Document Frame
Use your device camera or select a photo, adjust the 4 corner handles (44x44px), and apply perspective correction.
About Scan to PDF & Edge Cases
Capture physical paper pages with your phone or webcam, straighten skewed angles with a 4-corner perspective warp, apply an adaptive black-and-white document filter, and save a multi-page PDF. Scan to PDF computes a 3x3 projective homography matrix in TypeScript and applies bilinear pixel interpolation and local luminance thresholding in your browser.
- Drag the 4 corner handles to match the paper corners on a desk; the perspective warp rectifies trapezoidal camera distortion into a flat rectangular page.
- Adaptive B&W filter removes uneven room shadows so receipts and contracts look like flatbed scans.
How Scan to PDF Works
- 1
Step 1
Open your device camera or import a photo of a paper document in Scan to PDF.
- 2
Step 2
Adjust the 4 corner handles around the page edges and select Adaptive B&W, Grayscale, or Original color.
- 3
Step 3
Add more pages to your scan tray and click Export Scanned PDF.
Plan Limits for Scan to PDF
Rendered directly from our active plan configuration. No hidden caps before your first download.
| Limit | Free ($0) | Day Pass ($4.99) / Pro ($4.00 / month) |
|---|---|---|
| Maximum file size | 50 MB | 500 MB |
| Maximum files per batch | 10 files | 200 files |
| Processing location | On your device | On your device |
Frequently Asked Questions
- Does Scan to PDF work on mobile phones without installing an app?
- Yes. Scan to PDF uses the standard web camera API in mobile Safari and Chrome so you can capture and deskew multi-page documents in your browser.
- Does Scan to PDF upload my files to a server?
- No. Scan to PDF is a local browser tool. Your file bytes stay on your device, and you can verify zero file uploads in your browser Network tab.
- What are the file size and batch limits for Scan to PDF?
- On the Free plan, you can queue up to 10 files per batch and up to 50 MB per file. The 24-Hour Day Pass and Pro plans support up to 200 files per batch and 500 MB per file.
How to Scan to PDF by Device (Mac, Windows, iPhone)
Related PDF Tools
- OCR PDFRun optical character recognition (OCR) on scanned PDFs in your browser worker to add an invisible selectable text layer without uploading files.
- Photo to PDFConvert phone and camera photos into a clean, properly oriented PDF on your device. Fit photos to Letter or A4 pages with clean print margins.
- Compress PDFCompress PDF files locally in your browser to fit portal upload limits. Choose light, recommended, strong, or exact byte target compression modes.
- Merge PDFMerge PDF files directly in your browser without uploading documents to a server. Combine multiple PDFs in custom order with local device processing.