Other PDF Issues

How to Fix Acrobat Crashing During OCR of Scanned Documents

Ayan MasoodAyan Masood Nov 5, 2026 869 views

Question details

The user experiences unpredictable software crashes in Adobe Acrobat while attempting to perform Optical Character Recognition (OCR) directly on scanned documents.

How to Fix Acrobat Crashing During OCR of Scanned Documents
Product
Adobe Acrobat
Device & OS
not provided
Scenario
Attempting to scan physical documents and immediately run OCR directly through the Adobe Acrobat scanning interface.
Observed behavior
Adobe Acrobat crashes unexpectedly during the scanning or OCR process, likely due to conflicts between the scanner's TWAIN driver, the operating system, and the software's direct scanning interface.
Before you start

Before attempting to process your documents again, ensure that your scanner drivers are fully up to date and check that the physical documents are free from smudges or severe skewing.

Solution 1Recommended

Scan Documents Externally and Combine in Acrobat

Bypassing Acrobat's direct TWAIN scanning interface often resolves unexpected crashes by separating the scanning and OCR processes.

Acrobat relies on a TWAIN plug-in to access your scanner software. If there is a communication failure between the operating system, the scanner driver, and Acrobat, the program may crash without warning. Scanning your files externally avoids this complex interaction.

1
Scan with native software

Open your scanner's native desktop application and scan your document pages directly into a dedicated folder on your computer as high-quality image files (such as PNG or JPEG).

2
Combine files in Acrobat

Launch Adobe Acrobat, go to the 'Tools' menu, select 'Combine Files', and import all the newly scanned images to merge them into a single PDF document.

3
Run OCR on the completed PDF

Save the combined PDF, then navigate to 'Scan & OCR' in the Tools menu and click 'Recognize Text' to process the entire document safely.

Scan Documents Externally and Combine in Acrobat
Scan Quality Optimization: For the most reliable OCR results, ensure your external scans are high-resolution (at least 300 DPI), use high contrast, and are perfectly aligned.

Extract Text from Scanned PDFs with WPS Office OCR

Avoid unexpected crashes and streamline your document workflow by using the highly stable OCR feature in WPS PDF. It accurately recognizes text from scanned images and converts them into editable, searchable formats seamlessly.

  1. 1. Open WPS PDF: Launch WPS Office and click on 'PDF' in the home interface to open the dedicated PDF viewer and editor.
  2. 2. Load your scanned document: Click 'Open' to load your scanned PDF document or image file into the workspace.
  3. 3. Access the OCR tool: Navigate to the 'Tools' tab on the top ribbon and click the 'OCR' button to launch the optical character recognition interface.
  4. 4. Extract and save: Choose your desired extraction format, such as 'Extract Text' or 'Convert to Word', and click the confirmation button to process and save your fully editable document.
Highly stable and accurate OCR engine designed specifically for scanned documents.Fully compatible with standard PDF formats and Microsoft Office files like Word and Excel.Lightweight architecture ensures smooth performance without unexpected crashes.
microsoft office alternative - wps office

Frequently Asked Questions

Why does my PDF software crash when running OCR?

Crashes during OCR are typically caused by conflicts between the scanning TWAIN driver, your operating system, and the PDF software. They can also occur if the software engine is overloaded by attempting to process overly complex, skewed, or extremely low-resolution images.

How can I improve OCR accuracy on scanned documents?

To improve accuracy, ensure your scans are captured at a minimum of 300 DPI. Increase the contrast so the text stands out from the background, keep the document perfectly aligned to avoid skewing, and ensure the original font is clean and legible.

Can I perform OCR on a scanned PDF without Adobe Acrobat?

Yes, many robust alternative PDF editors, including WPS PDF, feature built-in OCR capabilities. These alternatives can reliably convert scanned images into editable text formats without relying on Adobe Acrobat.