A scanned PDF is a PDF made from photos or scans of paper pages. Unlike a text-based PDF, each page is essentially a picture. That makes JPG a natural output format when you want to share, email or reuse those pages as regular image files.
What is a scanned PDF?
When you scan a document or take a photo of a page and save it as PDF, the result is usually a scanned PDF. Common examples include receipts, signed forms, handwritten notes, old letters, insurance documents and paper records digitised for storage.
These PDFs work differently from documents created in Word or exported from design software. There is no editable text layer — just page images inside a PDF container. Converting to JPG simply extracts each page as an image file.
How to convert a scanned PDF to JPG
| Step | What to do |
|---|---|
| 1 | Upload your scanned PDF to the free converter. |
| 2 | Select JPG as the output format. |
| 3 | Choose 150 DPI for most uses, or 300 DPI if you need higher quality. |
| 4 | Download the ZIP file with one JPG per page. |
Each page is numbered in order, so multi-page scans stay organised without manual renaming.
Why JPG works well for scanned PDFs
Scanned pages are already photographic in nature. JPG compression handles that content efficiently, producing smaller files that are easy to attach to emails, upload to websites or share in messaging apps.
| Use case | Why JPG fits |
|---|---|
| Email a scanned receipt | Small file size, widely supported. |
| Share a signed form | Easy to open on any device. |
| Upload to a portal that rejects PDFs | JPG is accepted almost everywhere. |
| Insert into a presentation | Slides handle JPG images naturally. |
| Archive paper records digitally | Readable at 150–300 DPI without huge files. |
JPG or PNG for scanned documents?
For most scanned PDFs, JPG is the practical choice. Choose PNG instead if the scan contains very small text, fine lines or details you need to preserve at maximum sharpness — for example, a technical diagram or a form with tiny print.
Not sure? Read PDF to JPG or PNG: which format should you choose?
What DPI should you use?
For scanned documents, 150 DPI is a good default — readable on screen without creating oversized files. Use 300 DPI if the scan will be printed or zoomed. Use 72 DPI only for quick previews or thumbnails.
Scanned PDFs with private information
Scanned receipts, medical forms, ID copies and HR documents often contain personal data. For those files, consider the offline desktop app instead of uploading through a browser. It converts scanned PDFs to JPG locally on your Windows computer.