How to scan to PDF online free
Quick answer: Capture each page as a photo or image, open Scanto, add the images in order, set quality, and download your PDF — no install or login.
- Take clear photos of each page (good light, flat paper).
- Open Scanto on your computer or phone browser.
- Select Scan to PDF and add images in page order.
- Lower quality if you need a smaller file for an upload form.
- Download the PDF and submit or share it.
Need device-specific steps? See how to scan to PDF on iPhone or scan to PDF on Android .
Frequently asked questions
How do I scan a document to PDF without a scanner?
Use your phone camera, transfer images if needed, then convert with Scanto Scan to PDF in your browser.
How to scan to PDF on iPhone?
Take document photos, open Scanto in Safari, add images in order, and download one PDF. See our iPhone guide for step-by-step details.
Do I need an app from the store?
No. Scanto runs in the browser and does not require installation.
How can I keep the file under 100KB or 1MB?
Use fewer pages, lower the quality slider, and crop margins before converting.
Can I scan to computer without printer software?
Yes. Capture images on your phone, move them to your computer, and create the PDF with Scanto in your browser.
Related scan guides
Also free: Mind Map Online — create mind maps with no login.