How to Fix Acrobat OCR Removing Text From PDF Files
Question details
The user needs to prevent the OCR (Optical Character Recognition) tool from erasing or altering original content in scanned documents.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Running OCR on scanned legal or critical documents to make the text searchable and editable.
- Observed behavior
- Entire pages of text or specific information, such as stamps and handwritten notes, disappear or are altered after applying the Recognize Text OCR function.
Always make a backup copy of your original scanned PDF document before running any OCR or text recognition tools, as OCR processes can permanently alter the visual layout of the file.
Change OCR Output to Searchable Image (Exact)
Adjusting Acrobat's OCR settings ensures the visual appearance of the original document is preserved while a hidden layer of searchable text is safely added.
Acrobat's default OCR settings sometimes attempt to replace scanned text with generated fonts to reduce file size. This can cause handwritten notes, stamps, or unrecognized text to be deleted. Changing the output mode to Exact preserves the original pixels.
Open your scanned PDF in Adobe Acrobat and select the 'Scan & OCR' tool from the right-hand pane or the Tools menu.
Click on 'Recognize Text' in the toolbar, select 'In This File', and then click on the 'Settings' gear icon to open the Recognize Text Settings dialog.
In the settings window, locate the 'Output' dropdown menu and change it from 'Searchable Image' or 'ClearScan' to 'Searchable Image (Exact)'.
Click 'OK' to save the settings, then click 'Recognize Text' to run the OCR process again. Your original text and images will now remain intact.
Flatten the Document by Printing to PDF
If Acrobat continues to erase text, 'printing' the document as a new PDF can flatten the file and resolve underlying formatting conflicts before running OCR.
Use WPS Office to Extract and Search Text in PDFs
Avoid frustrating text loss during OCR by using the advanced PDF tools in WPS Office. WPS provides a highly accurate Optical Character Recognition (OCR) engine that safely extracts text from scanned documents while perfectly maintaining the original layout.
- 1. Open PDF in WPS Office: Download and launch WPS Office, then open your scanned PDF document using the WPS PDF viewer.
- 2. Access the OCR tool: Navigate to the 'Tools' tab on the top ribbon and click on the 'OCR' button to open the recognition panel.
- 3. Select Output Format: Choose your desired output format, such as 'Extract Text' for raw text or 'Convert to Searchable PDF' to preserve the visual document.
- 4. Set Language: Select the appropriate language for the document content to ensure maximum OCR accuracy.
- 5. Process Document: Click 'Start' to process the document. WPS will safely generate your searchable or editable text without altering original visuals.
Frequently Asked Questions
Why does Acrobat OCR remove text from my PDF?
Acrobat OCR may remove text if the output style is set to 'ClearScan' or 'Searchable Image', which attempts to replace original images with newly generated fonts to reduce file size. If the software misinterprets a stamp, signature, or handwritten note, it may erase it entirely instead of rendering it.
What is the difference between Searchable Image and Searchable Image (Exact)?
The 'Searchable Image' setting compresses the background image to reduce file size, which can alter the document's appearance and remove elements. 'Searchable Image (Exact)' keeps the original scanned image completely untouched and simply overlays an invisible, searchable text layer.
How do I recover text that was already erased by OCR?
If you saved over the original file, you can try right-clicking the file in your operating system and selecting 'Restore Previous Versions' (Windows) or use Time Machine (Mac). Otherwise, you will need to revert to an original backup copy of the PDF before OCR was applied.
Does WPS Office offer a reliable OCR feature for PDFs?
Yes, WPS Office includes a powerful and accurate OCR tool within its PDF editor. It allows users to extract text or convert scanned images into searchable and editable formats, offering a safe alternative when other software struggles with document formatting.
