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How to Fix Word Documents Hanging When Combining to PDF
Question details
Combining multiple Word documents into a single PDF file freezes and remains stuck for hours without completing.
- Product
- PDF Converter
- Device & OS
- not provided
- Scenario
- Merging several Word files into one combined PDF document.
- Observed behavior
- The conversion process hangs and fails to complete, staying stuck on the processing screen indefinitely without generating the final PDF.
Ensure that none of the Word documents you are trying to combine are currently open in another application, and verify you have a stable internet connection if using an online conversion tool.
Identify and Repair Corrupted or Oversized Word Documents
A single corrupted file or an excessively large document containing uncompressed images can cause the entire merging process to hang.
When merging multiple files, the PDF converter processes them sequentially. If one document contains corrupted elements, broken hyperlinks, or excessively large media files, the software may enter an infinite loop trying to render it.
Convert each Word document to PDF one by one. This will help you isolate the specific file that is causing the process to hang.
Open the problematic Word file, select any image, go to the Picture Format tab, click 'Compress Pictures', and apply it to all images in the document to reduce the file size.
Clear unusual fonts, broken hyperlinks, or nested tables that might confuse the PDF converter. Save the file and try merging again.
Use the 'Save As' function to create a brand new copy of the problematic document. This often strips out hidden background errors.
Update PDF Software and Disable Security Conflicts
Outdated software, bloated browser caches, or overly aggressive antivirus programs can intercept and block the file merging process.
Combine Word Documents into PDF Instantly with WPS Office
Skip the hanging web tools and bulky software. WPS Office provides a lightweight, built-in PDF toolkit to merge Word documents quickly and offline without freezing.
- 1. Open PDF Tools: Launch WPS Office and click on 'PDF' in the left navigation pane to access the PDF toolkit.
- 2. Select Merge PDF: Click on the 'Merge PDF' option from the available tools menu.
- 3. Add your Word files: Click 'Add Files' and select the multiple Word documents you want to combine.
- 4. Arrange and Merge: Drag the files to arrange them in your desired order, then click 'Merge' to generate your new PDF instantly.
Frequently Asked Questions
Why does my PDF conversion get stuck at 99%?
Conversions often get stuck near the end because the software is struggling to render a specific complex element, such as a high-resolution image, an embedded custom font, or a corrupted table located in the final pages of your document.
Is there a limit to how many Word documents I can combine into a PDF at once?
Most desktop PDF software like WPS Office can handle dozens of files at once, restricted mostly by your computer's available RAM. However, online web converters typically limit you to 10-20 files or enforce a maximum upload size (e.g., 50MB).
Can macros in my Word document cause the PDF merge to hang?
Yes, active macros (.docm files) or VBA code can interfere with automated conversion processes. It is highly recommended to save the files as standard .docx documents without macros before attempting to merge them.
Why does my computer fan get loud when combining files?
Combining multiple documents, especially those with high-quality images, requires significant CPU and memory resources to re-render pages into a new format, which causes your computer to generate heat and spin up the fans for cooling.
