Fix Adobe Acrobat Slow When Creating PDF from JPG Files
Question details
The user is experiencing unusually slow performance when converting multiple JPG images into a single PDF document.

- Product
- Adobe Acrobat
- Device & OS
- macOS
- Scenario
- Creating a PDF file from a batch of multiple JPG images.
- Observed behavior
- The conversion process is taking 15 to 20 minutes instead of the usual few minutes.
Before troubleshooting, ensure you save your current work and temporarily disconnect your Mac from the internet to test if background syncing is causing the slowdown.
Test Conversion Offline and Disable Background Syncing
Disconnecting from the internet and pausing background Adobe services can determine if network synchronization is causing the extreme slowdown.
Often, background utilities like the Adobe Collaboration Synchronizer or Creative Cloud updaters attempt to communicate with servers during resource-intensive tasks. Disabling them temporarily isolates the problem.
Turn off your Wi-Fi or unplug your Ethernet cable so the Mac is completely offline.
Go to Applications > Utilities and launch Activity Monitor to observe running background processes.
Locate processes related to Adobe Creative Cloud, Collaboration Synchronizer, and Adobe updater services, select them, and click the Stop (X) button to quit them.
Open Acrobat and try creating the PDF from your JPG files again to see if the processing speed improves.

Monitor Network Connections During Conversion
Use macOS network tools to identify if specific background apps are trying to connect to the internet and hogging resources while you convert files.
Create PDFs from JPGs Instantly with WPS Office
If Adobe Acrobat continues to be slow or freeze during conversion, switch to WPS Office. It provides a lightweight, fast, and offline-friendly PDF tool that seamlessly converts multiple JPGs into high-quality PDFs without lagging.
- 1. Download and install: Download and install WPS Office on your Mac or Windows computer.
- 2. Open the PDF tool: Launch the WPS PDF application and select 'Picture to PDF' from the main tools menu.
- 3. Convert your files: Add your JPG files, arrange them in the desired order, and click 'Convert' to instantly generate your combined PDF document.

Frequently Asked Questions
Why does Acrobat slow down significantly when converting images?
This often happens because Acrobat or Creative Cloud attempts to synchronize large files or run background updater services over the internet simultaneously, which monopolizes system resources and delays local processing.
Does file size affect the JPG to PDF conversion speed?
Yes, extremely high-resolution JPG files or a large batch of images require more memory to process. Downsizing images or converting them in smaller batches can help speed up the process.
Is there a way to permanently disable the Adobe Collaboration Synchronizer?
You can stop it temporarily via Activity Monitor, but preventing it from starting permanently usually requires modifying Adobe Creative Cloud startup preferences or using a third-party application manager to block the service.
Can I convert JPG to PDF without using Adobe Acrobat?
Absolutely. You can use built-in macOS tools like Preview, or lightweight, fast alternatives like WPS Office to combine multiple JPGs into a PDF much faster without background syncing delays.




