How to Scan New Pages Directly Into an Existing PDF
Question details
The user wants to scan physical documents and append the newly scanned pages directly to an already open or existing PDF file without creating a new separate document.

- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Digitizing new physical pages and merging them seamlessly into a current PDF workflow.
- Observed behavior
- Needs the specific menu options and steps to append scanned pages directly into an existing PDF file, which vary depending on the version of Acrobat being used.
Ensure your scanner is properly connected to your computer, powered on, and that the necessary scanner drivers are installed before starting the scanning process.
Use Custom Scan to Append Pages in Adobe Acrobat
This is the standard method for most modern Adobe Acrobat versions to route freshly scanned pages into an existing file.
By configuring the Custom Scan settings, you can instruct Acrobat to bypass creating a new file and instead attach the incoming scans directly to your designated document.
Launch Adobe Acrobat and open the PDF document to which you want to add the scanned pages.
Navigate to 'Tools' > 'Create PDF' > 'Scanner', or choose 'Custom Scan' depending on your specific version of Acrobat.
In the Custom Scan dialog box, look under the 'Output' or 'File' section, and check the option for 'Append to existing file or portfolio'.
Click 'Scan' to begin. Once the scanning is complete, the new pages will appear at the end of your document. Go to 'File' > 'Save' to keep the changes.

Automatically Append Pages in Acrobat XI
For users specifically on Adobe Acrobat XI, appending can happen automatically if the target document is already open.
Insert Scanned Images into PDFs Easily with WPS Office
WPS Office provides a lightweight, highly compatible alternative for PDF editing. You can easily insert scanned document images into any existing PDF file, rearrange pages, and save your work without complex menus.
- 1. Open your PDF in WPS: Launch WPS Office and open your existing PDF file.
- 2. Go to the Page tab: Click on the 'Page' tab in the top navigation ribbon to access the document assembly tools.
- 3. Insert Scanned Images: Click 'Insert Page' and choose to insert images from your local drive (select the pages you have just scanned via your system scanner).
- 4. Adjust and Save: Drag the newly inserted image pages to the correct position in your PDF thumbnail panel, then click 'Save' to finalize the document.

Frequently Asked Questions
Can I rearrange the scanned pages after adding them to the existing PDF?
Yes. Open the page thumbnails panel on the left side of the screen. You can click and drag any page, including the newly scanned ones, to reorder them exactly as needed before saving.
Why is the 'Append to existing file' option greyed out in my software?
This option is typically greyed out if the currently open PDF has security restrictions (such as a password against editing) or is digitally signed, which prevents document assembly. You must remove the security restrictions to append new pages.
Is it possible to scan directly into a PDF using my mobile phone?
Yes, modern mobile apps like the WPS Office mobile app feature a built-in document scanner. You can use your smartphone's camera to scan physical pages and add them directly into an open PDF on your device.




