How to Fix Adobe Acrobat Invalid Numeric Value Error During PDF OCR
Question details
The user needs to resolve an error preventing the Optical Character Recognition (OCR) process from completing on a specific page range.

- Product
- Adobe Acrobat
- Device & OS
- macOS Mojave
- Scenario
- Attempting to run the OCR function to recognize text within a specific page range of a PDF document.
- Observed behavior
- Adobe Acrobat displays an 'Invalid Numeric Value' error message and halts the OCR process.
Verify that your PDF document is not restricted by security passwords or permissions, as encrypted files can sometimes interrupt the text recognition process and generate unexpected errors.
Isolate the Cause of the Numeric Value Error
Determine whether the OCR failure is tied to a corrupted PDF document structure or an issue with the local Adobe Acrobat installation.
PDF errors can often stem from specific elements inside a single document rather than the application itself. By isolating the file and the environment, you can identify exactly what needs fixing.
Open a completely different, known-working PDF document in your current Adobe Acrobat setup and attempt to run the OCR process. If it succeeds, the issue is specific to your original file.
Transfer the failing PDF file to a different computer, ideally one running a different operating system such as Windows, and run the OCR process using Acrobat.
If the error occurs only with the original document across multiple devices, the PDF file structure is likely corrupted. If the error occurs on all files on your Mac, your Acrobat application requires updates or repair.
Update or Reinstall Adobe Acrobat
Apply official patches from Adobe or reinstall the software to clear out bug-induced numerical errors.
Use WPS Office to Extract Text from PDFs Smoothly
If Adobe Acrobat continues to throw invalid numeric value errors during text recognition, WPS Office offers a highly compatible, built-in OCR feature to accurately extract and convert text from your scanned PDFs without complex troubleshooting.
- 1. Open your PDF in WPS Office: Launch WPS Office and open the scanned PDF document you want to perform OCR on.
- 2. Access the OCR tool: Navigate to the 'Tools' tab on the top ribbon and click the 'OCR' button.
- 3. Configure extraction settings: Choose whether you want to extract the text to a plain text file or convert the document into an editable Word file.
- 4. Process the document: Select the specific page range and the language of the document, then click 'Confirm' to extract the text instantly.

Frequently Asked Questions
What causes the 'Invalid Numeric Value' error in Acrobat?
This error is typically caused by corrupted internal document structures, formatting anomalies within the PDF file's code, or a specific version glitch in the Adobe Acrobat installation.
Can I bypass the OCR error by re-saving the PDF?
Yes, flattening or re-saving the PDF by selecting 'File' > 'Print' and choosing 'Save as PDF' can rewrite the document's internal structure and often resolves the invalid numeric value error.
Are there known compatibility issues with Acrobat on macOS Mojave?
Older operating systems like macOS Mojave may occasionally experience functional errors with newer updates of Adobe Acrobat. Ensuring your OS and software versions are mutually supported by Adobe is highly recommended.




