Fix Acrobat Optimize Scanned Pages Not Processing Every PDF
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.

- 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.
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.
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.
Navigate to your main folder of scanned PDFs and create several subfolders (e.g., Batch 1, Batch 2).
Move 50 to 100 PDF files into each subfolder, depending on the average page count of the documents.
Open Adobe Acrobat, launch the Action Wizard, and select your optimization action. Target the first subfolder instead of the entire directory.
Allow the batch to finish completely, check the output folder, and then proceed to run the Action Wizard on the next subfolder.

Identify and Remove Corrupted or Locked Files
Locate the specific file that is causing the Action Wizard to stall so the rest of the batch can proceed.
Update Acrobat and Review Action Settings
Ensure you are running the latest version of Acrobat to patch known bugs related to the Action Wizard and OCR engine.
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. Open WPS PDF: Launch WPS Office and open your scanned PDF document using the WPS PDF tool.
- 2. Access the OCR Tool: Navigate to the 'Tools' tab on the top ribbon and click on the 'OCR' button.
- 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. 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.

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.




