Fix Adobe Acrobat Taking Too Long to Combine EPS Files on Mac
Question details
Acrobat DC becomes extremely slow or unresponsive when attempting to combine multiple EPS files into a single PDF document.
- Product
- Adobe Acrobat DC
- Device & OS
- macOS
- Scenario
- A user is trying to merge several EPS vector files into one PDF using the 'Combine Files' feature.
- Observed behavior
- The conversion process hangs on Security Settings, takes upwards of 40 minutes to complete, or requires manually forcing Adobe Distiller to close before a new batch can be processed.
Before beginning the troubleshooting steps, ensure that you have backed up your original EPS files and check that your macOS and Adobe Acrobat are updated to their latest versions.
Force Quit Stalled Distiller Processes and Reduce Batch Size
Since Acrobat relies heavily on Adobe Distiller to convert EPS files, clearing out stalled background processes and processing fewer files at once can resolve the bottleneck.
Acrobat does not process EPS files natively; it sends them to Adobe Distiller in the background. If a previous file caused an error, Distiller may remain stuck, preventing all subsequent files from processing.
Navigate to Applications > Utilities on your Mac and double-click 'Activity Monitor' to open it.
In the 'CPU' tab of the Activity Monitor, type 'Distiller' into the search bar at the top right to filter the processes.
Select the 'Acrobat Distiller' process, click the 'X' button at the top of the window, and confirm by clicking 'Force Quit'.
Reopen Adobe Acrobat and try combining a smaller number of EPS files (e.g., 5 to 10 files) at a time to avoid overloading the application.
Adjust File Permissions and Security Settings
Strict macOS folder permissions or overly aggressive security scanning in Acrobat can severely delay file combination processes.
Convert Files Using Standalone Distiller or Illustrator
If Acrobat's built-in 'Combine Files' interface continually fails, converting the EPS files manually using Illustrator or the standalone Distiller app bypasses the UI-related bugs.
Discover a Fast and Lightweight PDF & Office Solution
If you are tired of resource-heavy software slowing down your workflow, WPS Office provides a streamlined, highly efficient alternative. While it does not process legacy EPS batch conversions natively, it includes a robust, built-in PDF toolkit to instantly merge, edit, and convert standard documents without dragging down your Mac's performance.
- 1. Download and Install: Visit the official WPS Office website and download the free installer for macOS.
- 2. Access the PDF Toolkit: Open WPS Office, select the 'PDF' tab from the home screen, and explore tools like 'Merge PDF'.
- 3. Streamline Your Workflow: Drag and drop standard PDFs and Office documents to merge them instantly without relying on heavy background distillers.
Frequently Asked Questions
Why does Acrobat Distiller take so long to process EPS files on Mac?
EPS is a complex legacy vector format. Acrobat cannot combine them directly; it must launch Adobe Distiller in the background to render the postscript data into PDF form. Large files, complex vectors, or strict macOS security scans can severely delay this background rendering.
Can I combine EPS files on Mac without using Adobe Distiller?
Yes. You can open EPS files individually in Adobe Illustrator or vector-compatible image viewers, save them as standard PDF documents first, and then merge those resulting PDFs using a lightweight tool.
How do I know if the Distiller process is actually stalled or just slow?
If the Acrobat progress bar remains frozen on 'Security Settings' for more than 5 to 10 minutes, or if your Mac's Activity Monitor flags the Acrobat Distiller process as 'Not Responding', it has completely stalled and needs to be force-quit.
Does temporarily disabling security settings in Acrobat put my Mac at risk?
Temporarily turning off Enhanced Security in Acrobat is generally safe provided you completely trust the origin of the EPS files you are converting. You should always re-enable these protections immediately after the conversion completes.
