Other PDF Issues

How to Fix Adobe Acrobat Crashing When Running OCR or Optimizing PDF

Steve KSteve K Nov 3, 2026 869 views

Question details

Adobe Acrobat Pro DC unexpectedly crashes or closes when attempting to optimize a document or run OCR processing.

How to Fix Adobe Acrobat Crashing When Running OCR or Optimizing PDF
Product
Adobe Acrobat Pro DC
Device & OS
not provided
Scenario
The user is attempting to run Optical Character Recognition (OCR) or optimize a scanned PDF document to reduce file size.
Observed behavior
The application closes unexpectedly or crashes completely before the optimization or OCR task can be completed.
Before you start

Before attempting to fix the installation, restart your computer to clear any lingering background processes, and verify that your system meets the minimum memory requirements for resource-intensive OCR tasks.

Solution 1Recommended

Review Crash Logs and Repair Acrobat Installation

Identify the exact cause of the crash by analyzing system logs and use the built-in repair tool to fix missing or corrupted application files.

Running OCR or optimizing large scanned PDFs requires significant processing power. Corrupted application files or system-level conflicts can cause the software to crash during these tasks. Reviewing the crash logs will help pinpoint whether the issue is related to the PDF file itself or an application error.

1
Check system crash logs

On Windows, press Win + X and select 'Event Viewer'. Navigate to 'Windows Logs' > 'Application' and look for 'Error' events related to Acrobat. On macOS, open the 'Console' app from Applications > Utilities and check the 'Crash Reports' section for Acrobat.

2
Check for Acrobat updates

Open Adobe Acrobat. Click on 'Help' in the top menu bar, select 'Check for Updates', and follow the prompts to install the latest patches.

3
Run the Repair tool

On Windows, open Acrobat and go to 'Help' > 'Repair Installation'. Allow the setup process to verify and replace any corrupted files.

4
Test with a different PDF

Open a completely different scanned PDF document and attempt to run 'Scan & OCR' or 'Optimize PDF'. If it succeeds, the original file may be corrupted or too complex.

Review Crash Logs and Repair Acrobat Installation
System Resources: If the optimization continues to crash only on very large files, try splitting the PDF into smaller batches of 10-20 pages before running the OCR tool.
Reliable PDF Editor with Built-in OCR

Use WPS PDF to Extract Text and Optimize Documents Seamlessly

If your current PDF software constantly crashes during intensive tasks, try WPS PDF. It features a highly stable OCR engine and efficient compression tools that consume fewer system resources, ensuring your workflow remains uninterrupted.

  1. 1. Open your PDF in WPS Office: Download and install WPS Office. Right-click your scanned PDF document, select 'Open with', and choose 'WPS Office'.
  2. 2. Access the OCR tool: Navigate to the 'Tools' tab on the top ribbon and click on the 'OCR' button to initialize the text recognition engine.
  3. 3. Configure extraction settings: Select the correct document language, choose whether to extract as plain text or a formatted document, and click 'Extract Text'.
  4. 4. Optimize the PDF file size: To reduce the file size after text recognition, go to the 'Tools' tab, click 'Compress', select your desired compression level, and click 'Compress Now'.
Stable and fast OCR processing that extracts text from large scanned documents without crashing.Seamless format compatibility with Microsoft Word, Excel, PowerPoint, and standard Adobe PDF files.Lightweight architecture that optimizes PDF files efficiently even on low-spec computers.User-friendly toolkit for batch-processing and editing complex PDF documents.
microsoft office alternative - wps office

Frequently Asked Questions

Why does my PDF editor crash specifically when running OCR?

Optical Character Recognition (OCR) analyzes every pixel of an image to detect text, which is highly CPU and RAM intensive. If the document has a very high DPI resolution or your system lacks sufficient memory, the application may exhaust available resources and crash.

How can I reduce the chance of crashes when optimizing a large PDF?

Before running the optimization tool, close all background applications to free up RAM. Alternatively, use the 'Extract' tool to split your PDF into smaller files (e.g., 50 pages each) and optimize them individually.

Will repairing the Acrobat installation delete my saved PDFs?

No, running the 'Repair Installation' tool from the Help menu only verifies and replaces the core application program files. Your personal PDF documents and saved preferences will not be affected or deleted.