How to Fix Error When Combining Multiple PDF Files in Acrobat
Question details
The user experiences an error in Adobe Acrobat specifically when attempting to combine or merge multiple PDF files, likely due to a damaged or incompatible source file.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Attempting to merge or combine multiple PDF documents into a single cohesive file.
- Observed behavior
- Acrobat successfully combines non-PDF files but throws an error when trying to merge PDF files.
Ensure that none of the PDF files you are attempting to merge are password-protected or digitally signed, as these security restrictions often prevent files from being combined.
Identify the Corrupted or Incompatible PDF File
Isolate the problematic file by systematically combining your PDFs in smaller batches.
Often, a merging error is caused by a single corrupted, poorly formatted, or incompatible PDF file among the batch. By narrowing down the source, you can exclude or repair the specific file causing the software to fail.
Select just two of the PDF files you want to merge and try combining them in Acrobat. If they merge successfully, move on to the next pair.
Continue this process until you receive the error message. The file that triggers the error is the damaged or incompatible document.
Alternatively, create a brand new, blank PDF file. Try combining this test PDF with each of your source PDFs individually. The file that fails to merge with the test document is the source of the issue.
Once identified, try re-downloading the problematic PDF, or if you have the original source file (like a Word document), export it to PDF again before attempting to merge the entire batch.
Use an Online PDF Merging Tool
Bypass local software glitches by using a web-based PDF combining service.
Easily Combine PDF Files with WPS Office
Avoid frustrating merging errors by using the robust PDF Toolkit built directly into WPS Office. It handles multiple files smoothly and offers advanced PDF editing capabilities.
- 1. Open WPS Office: Launch WPS Office on your computer and navigate to the 'PDF' tab on the main dashboard.
- 2. Select Merge PDF: Click on 'Merge PDF' from the list of available PDF tools to open the combining interface.
- 3. Add Your Files: Click 'Add Files' to select all the PDF documents you wish to combine, and drag them into your preferred order.
- 4. Combine and Save: Click the 'Merge' button. Once the process is complete, save the newly combined PDF to your desired folder.
Frequently Asked Questions
Why does my PDF editor say a file is damaged when combining?
This usually happens if the PDF was incompletely downloaded, saved incorrectly, or generated by a third-party tool that doesn't strictly adhere to standard PDF coding structures. Re-saving the file often fixes it.
Can I merge PDF files that are password protected?
Generally, no. You cannot combine PDFs if they are encrypted or have editing restrictions. You must first remove the password security from each individual file before attempting to merge them.
Is there a limit to how many PDFs I can combine at once?
Desktop applications like WPS Office and Acrobat can handle hundreds of pages or files at once, mostly limited by your computer's RAM. However, online PDF mergers often impose file size limits (e.g., 100MB) or a maximum number of files per batch.
Will combining PDFs reduce the quality of the original files?
No, simply combining or merging PDF files will not reduce the quality or resolution of the text and images within them. The process simply stitches the existing pages together into a new container file.
