You scan a ten-page contract and end up with ten separate files, or a folder of JPG images, when what you needed was a single PDF. This happens because many scan tools treat each pass of the scanner as its own document unless told otherwise. The fix depends on whether you have a document feeder, which app you scan with, and whether you start scans from the computer or from the printer's panel. This guide covers each route, plus how to combine separate pages into one PDF after the fact.
What you might be seeing
- Each page saves as a separate file
- Scans save as JPG or PNG images instead of PDF
- The scan finishes after the first page on the glass
- Pages end up in the wrong order
Common causes
- Image file type selected
- JPG and PNG are single-page formats, so each scanned page becomes its own file.
- No add-page prompt on the flatbed
- Some apps close the file as soon as one flatbed scan completes.
- Wrong source or combine setting
- With the source set to the glass, pages in the feeder are ignored, and some tools need a combine option switched on.
- Tool can't create PDFs
- Windows Fax and Scan saves scans as image files rather than PDFs.
How to fix it, step by step
Work through these in order and test a print after each one. Most people are done within the first few steps.
Use the document feeder when you have one
Load all the pages in the feeder, then set the scan source to Feeder rather than Flatbed. In Windows Scan, choose the feeder as Source, set File type to PDF and scan the stack in one pass. Check the result: depending on the version and printer, Windows Scan may save one combined PDF or one file per page. If it splits them, use one of the combining steps below.
Build the PDF from the printer's panel
Many printers can assemble a multi-page PDF themselves. Start a scan from the printer's screen, choose PDF as the file type, and scan the first page on the glass. Look for a prompt such as Scan another page, Add page or Next page before choosing Done or Finish. If no prompt appears, check the scan settings for a multi-page or continuous scan option.
Add pages in the manufacturer's app
The manufacturer's scan app usually shows a thumbnail after each flatbed scan, with a button to add or scan more pages. Place the next page, add it, and repeat. Rotate or drag thumbnails into order if needed, then save once as PDF at the end. Saving after each page creates separate files, so wait until the last page is in before you save.
Combine pages in Image Capture on a Mac
Open Image Capture, select the scanner and click Show Details. Set Format to PDF and select Combine into single document. Choose the document feeder as the source if you have one and scan the whole stack at once. The combined PDF is saved to the folder chosen under Scan To, ready to rename and file.
Merge separate PDFs in Preview
On a Mac, open the first PDF in Preview and choose View › Thumbnails. Drag the other PDF files from Finder into the thumbnail sidebar, dropping each where it belongs in the page order. Drag thumbnails up or down to fix the order, then choose File › Export as PDF and save the combined document under a new name, keeping the originals until you've checked it.
Combine images into one PDF on Windows
Select the page images in File Explorer, right-click and choose Print; in Windows 11, select Show more options first if Print isn't listed. In the Print Pictures window, choose Microsoft Print to PDF as the printer, pick the full page photo layout, clear the Fit picture to frame check box so edges aren't cropped, and click Print. Windows asks for a file name and saves one PDF with a page per image.
TipName the images page01, page02 and so on so they print in the right order.
Fix order and orientation for two-sided originals
With a single-sided feeder, scan all the fronts, flip the stack and scan the backs. Many scan apps offer a manual duplex or collate option that interleaves the two passes for you; otherwise reorder thumbnails by hand. Rotate any upside-down pages in the app before saving, or in Preview on a Mac, so the finished PDF reads correctly from start to end.
How to keep it from happening again
- Set PDF as the default file type in your scan app
- Use the feeder for stacks and add-page prompts on the glass
- Number page files so they sort correctly
- Save a multi-page PDF shortcut on the printer
Common questions
Can Windows Fax and Scan make a PDF?
Not directly. It saves scans as image files such as JPG or TIFF. You can scan pages there and combine them with Microsoft Print to PDF, but Windows Scan, the manufacturer's app or the printer's own panel are simpler choices if you scan multi-page documents regularly.
How do I add a forgotten page to an existing PDF?
Scan the missing page as its own PDF, then merge the two. On a Mac, drag it into the thumbnail sidebar in Preview at the correct position and export. On Windows, use the insert pages or combine feature of the PDF editor you already have; many free editors include one.
Why does my scan stop after one page?
Usually the scan started on the flatbed without an add-page prompt, or the source is set to the glass while the pages sit in the feeder. Change the source to the feeder, or turn on a multi-page or continuous scan option so the app waits for more pages before saving.
This guide is general information written for common home and office printers. Menus and button names vary between models, so check your printer’s manual where a step differs. Printer Problems Solved is independent and not affiliated with any printer manufacturer. See our disclaimer.