PDF Conversion Issues

How to Fix the idrskrn15.dll Error During PDF OCR

Bushra ParveenBushra Parveen Oct 28, 2026 869 views

Question details

The user needs to resolve an idrskrn15.dll wrong-content error that occurs when attempting to perform Optical Character Recognition (OCR) on a PDF file.

How to Fix the idrskrn15.dll Error During PDF OCR
Product
Adobe Acrobat / PDF Software
Device & OS
not provided
Scenario
Running OCR on a PDF document to make the text searchable or editable.
Observed behavior
The OCR process fails to complete and displays an error message referencing the idrskrn15.dll file.
Before you start

Ensure your PDF software is fully updated to the latest version and restart your computer to clear any temporary background glitches before attempting to repair the OCR components.

Solution 1Recommended

Isolate the Issue and Verify OCR Language Settings

Testing a different file helps determine if the error is specific to one corrupted document or a broader application issue.

Often, a damaged or improperly formatted PDF can cause the OCR engine to crash. By running the OCR tool on a known-working document, you can figure out whether the problem lies with the specific file or your software's OCR component.

1
Test with another PDF

Open a different, known-working PDF file in your PDF software and run the OCR tool to see if the process completes successfully.

2
Access OCR settings

Navigate to your PDF software's OCR settings, usually found under the 'Tools' or 'Scan & OCR' menu.

3
Verify language

Check the selected OCR language. Ensure the selected language matches the text in your document and that the language pack is properly installed.

File-Specific Issues: If the OCR process works on other files, your original PDF is likely damaged. You may need to recreate the PDF or contact support to analyze the specific file.

Use WPS Office to Extract Text from PDFs via OCR

If your current PDF reader continues to throw DLL errors, WPS Office provides a robust, built-in OCR feature to quickly and accurately convert your scanned PDFs or images into editable text without complex configuration.

  1. 1. Open the PDF: Launch WPS Office and open your scanned or image-based PDF document.
  2. 2. Access the OCR tool: Navigate to the 'Tools' tab on the top ribbon menu.
  3. 3. Initiate text recognition: Click on the 'OCR' button to launch the text recognition interface.
  4. 4. Extract the text: Select your desired output format (like Word or plain text) and extraction area, then click 'Extract text' to finish.
Built-in reliable OCR technology with no extra plugin installation requiredEasily convert scanned PDFs to editable Word and Excel formatsHighly compatible with standard Adobe PDF document formatsSupports multiple languages for highly accurate text recognition
microsoft office alternative - wps office

Frequently Asked Questions

What is the idrskrn15.dll file?

The idrskrn15.dll is a Dynamic Link Library file associated with Optical Character Recognition (OCR) engines in certain PDF applications. It is responsible for processing images and scanned documents into searchable and editable text.

Why does the OCR error only happen on one specific PDF?

If the error occurs exclusively on a single file, that PDF might contain corrupted metadata, unsupported embedded fonts, or a damaged image layer that causes the OCR engine to crash during processing.

Can I manually download and replace the idrskrn15.dll file?

It is highly discouraged to download DLL files from third-party websites due to malware and security risks. Instead, you should use the 'Repair Installation' feature of your PDF software to safely and officially restore the file.

How do I change the OCR language?

In most PDF editors, you can adjust the OCR language by accessing the OCR or Scan settings menu right before you initiate text recognition. Ensuring it matches the language of your document improves accuracy and prevents processing errors.