PDF Conversion Issues

Fix Acrobat Optimize Scanned Pages Not Processing Every PDF

Steve KSteve K Oct 28, 2026 869 views

Question details

The user needs to fix an issue where Adobe Acrobat Action Wizard halts prematurely while batch processing a large folder of PDFs for OCR and PDF/A conversion.

How to Fix Acrobat Optimize Scanned Pages Not Processing All PDFs
Product
Adobe Acrobat
Device & OS
not provided
Scenario
Batch optimizing and applying OCR to a large folder of scanned PDFs using the Action Wizard.
Observed behavior
The Action Wizard stops processing before all documents in the folder are successfully optimized and converted to PDF/A.
Before you start

Verify that none of the PDF files in your target folder are currently open in another program, as locked files can immediately interrupt batch processing.

Solution 1Recommended

Process the PDF Folder in Smaller Batches

Divide a massive folder of PDFs into smaller chunks to prevent Acrobat from running out of memory during intensive OCR and PDF/A conversion tasks.

While Adobe Acrobat does not explicitly document a hard limit on the number of pages or files the Action Wizard can handle, processing hundreds of complex scanned pages simultaneously can exhaust system resources. Breaking the job into smaller batches ensures stability.

1
Create subfolders

Navigate to your main folder of scanned PDFs and create several subfolders (e.g., Batch 1, Batch 2).

2
Distribute the files

Move 50 to 100 PDF files into each subfolder, depending on the average page count of the documents.

3
Run Action Wizard

Open Adobe Acrobat, launch the Action Wizard, and select your optimization action. Target the first subfolder instead of the entire directory.

4
Verify completion

Allow the batch to finish completely, check the output folder, and then proceed to run the Action Wizard on the next subfolder.

Process the PDF Folder in Smaller Batches
Memory Management: Closing other memory-intensive applications while Acrobat is performing batch OCR will significantly reduce the chance of the process freezing.
Powerful PDF Editor

Use WPS PDF to Perform OCR and Optimize Scanned Documents

If Acrobat continues to freeze during large batch operations, WPS Office offers a highly stable and lightweight PDF editor with built-in OCR technology. It helps you quickly extract text, recognize scanned documents, and compress PDF files smoothly.

  1. 1. Open WPS PDF: Launch WPS Office and open your scanned PDF document using the WPS PDF tool.
  2. 2. Access the OCR Tool: Navigate to the 'Tools' tab on the top ribbon and click on the 'OCR' button.
  3. 3. Select OCR Options: Choose the pages you want to recognize, select the output language, and choose whether to extract text or convert to an editable document.
  4. 4. Optimize and Save: Once the text is recognized, go to the 'Protect' or 'Tools' tab to use the 'Compress' feature to reduce the final document's file size.
High-accuracy OCR engine for converting scanned PDFs into editable textBuilt-in PDF compression tools to reduce file sizes without losing qualityFully compatible with standard PDF formats and Adobe Acrobat filesLightweight architecture that consumes fewer system resources during intensive tasks
microsoft office alternative - wps office

Frequently Asked Questions

Is there a maximum file limit for the Acrobat Action Wizard?

There is no officially documented file or page limit. However, processing hundreds of complex, high-resolution scanned pages at once can exhaust system RAM and CPU, causing the Action Wizard to freeze or stall.

Why does PDF/A conversion fail on certain scanned files?

PDF/A is a strict archival standard that requires specific font embeddings and color profiles. If a scanned document is severely corrupted, lacks standard color spaces, or contains incompatible hidden layers, the conversion process may abort.

How can I tell which file caused the Action Wizard to stop?

Sort your output destination folder by 'Date Modified'. The file that caused the interruption is typically the next file in alphabetical or numerical order in your source folder immediately following the last successfully saved document.