Scan to PDF online free
Last updated: August 2026
Quick answer: ScanTo turns one or more images into a single PDF entirely in your browser. No login, no watermark, files stay on your device.
Use your phone photos or scanner exports (JPG, PNG, WebP), adjust quality for smaller files, and download a ready PDF for email, forms, or school submissions.
- Multiple images → one PDF
- A4 or original image page size
- Quality slider to reduce file size
Also available: scan to PDF iPhone guide , Android workflow and scan to computer fallback .
Frequently asked questions
Is scan to PDF free?
Yes. ScanTo is completely free with no account, no watermark on downloaded PDFs, and no file-count limits. You can scan as many pages as you need — capture, upload, and export in minutes.
Do you upload my scans?
No. Images are processed locally in your browser with pdf-lib and never uploaded to a server. This makes ScanTo safe for confidential documents, contracts, and ID scans.
What image formats work?
Common formats such as JPEG, PNG, and WebP are supported through the browser canvas. HEIC images from iPhone can be converted first with the Image Converter tool.
Can I scan multiple pages?
Yes. Add several images and each becomes a page in the PDF in the order you added them. A quality slider and page size options (A4, letter, legal, or match image) give you control over the output.
How to scan to PDF on iPhone?
Use your iPhone camera to capture pages in the Safari or Chrome browser, then upload the images in ScanTo Scan to PDF, choose quality and page size, and export one PDF — no app store install needed. See the iPhone guide for the full workflow.
How to scan to PDF on Android?
Take photos on Android in the Chrome browser, add them in ScanTo Scan to PDF, adjust the quality slider, and download the combined file. The whole process stays on your device. See the Android guide for details.
Related tools
Also free: Mind Map Online — create mind maps with no login.