How to use Scan to PDF
- Tap “Select images” — on phones this opens the camera. Take one photo per page (or pick existing photos).
- Choose the scan filter: Document whitens the paper; Black & white gives the smallest files.
- Reorder pages if needed and tap “Convert to PDF”.
Tips for good scans
Lay the page on a dark, flat surface, avoid shadows from your phone, and fill the frame with the document. The Document filter stretches contrast so grey paper turns white and text gets darker. Add more pages any time before converting.
Want the scan to be searchable? Run it through OCR PDF afterwards. Need it under a size limit? Use Compress PDF to a specific size.
🔒 Your files never leave your device
bopdf processes your documents locally with JavaScript (pdf-lib and Mozilla pdf.js) inside your browser tab. Your PDF is never uploaded, stored or seen by us — you can even disconnect from the internet after the page loads and the tool keeps working. When you close the tab, everything is gone.
Frequently asked questions
Do I need to install an app?
No, it runs in your phone browser.
Are the photos uploaded?
No, they are processed on your phone.
Can I scan multiple pages?
Yes, add as many photos as you like; each becomes one page.
Are my files uploaded to a server?
No. Everything happens in your browser on your own device. Files are never sent over the internet, which makes bopdf suitable for confidential documents.
Is there a file size limit?
There is no fixed limit, but very large files (hundreds of MB) depend on your device memory. On phones, files up to about 100 MB usually work well.