Fix Scanned PDF Text Printing Too Light in Adobe Acrobat
Question details
The user is trying to print a scanned document after converting it to PDF/A, but the printed text appears significantly lighter and less clear than the original scan.
- Product
- Adobe Acrobat XI Pro
- Device & OS
- not provided
- Scenario
- Converting a scanned document to a searchable PDF/A format and printing it.
- Observed behavior
- The text on the printed document loses clarity and becomes too light compared to the original scan.
Verify that your printer has sufficient ink or toner and that the original scanned image files are still available in case you need to re-process the conversion.
Disable the Make Searchable (Run OCR) Option
Turning off the Optical Character Recognition (OCR) feature prevents the software from replacing the scanned text image with thinner, computer-generated fonts during the PDF/A conversion.
When Acrobat converts a scanned document and makes it searchable, it often attempts to replace recognized text with a custom vector font. This process can significantly alter the thickness and contrast of the text, causing it to print very lightly.
Launch Adobe Acrobat XI Pro and open the original, unoptimized scanned PDF document.
Go to the 'Tools' pane on the right side, select 'Action Wizard' or 'Print Production', and choose your preferred method for saving as PDF/A.
Before confirming the conversion, locate the 'Make Searchable (Run OCR)' checkbox in the settings menu and uncheck it.
Complete the PDF/A conversion process without OCR enabled, then go to 'File' > 'Print' to print the document and verify the text darkness.
Use WPS Office for Clearer PDF Printing
If your current PDF software continues to distort your scanned documents during conversion, consider switching to WPS Office. Its built-in PDF tools preserve original document fidelity and print scanned files clearly without unexpectedly lightening text.
- 1. Open your PDF in WPS: Launch WPS Office and open your scanned PDF document from the home screen.
- 2. Access the Print Menu: Click on 'Menu' in the top-left corner and select 'Print' from the drop-down list.
- 3. Enable Print as Image: In the print settings window, check the 'Print as Image' option to ensure maximum fidelity to the original scan.
- 4. Print Your Document: Click the 'Print' button to output your document with clear, dark text.
Frequently Asked Questions
Why does OCR make printed text look lighter?
OCR (Optical Character Recognition) attempts to convert a picture of text into editable, searchable font characters. During this process, the software often generates a vector-based font representation that lacks the natural ink spread or boldness of the original scan, making it look thinner or lighter when printed.
Does converting to PDF/A automatically degrade print quality?
No, PDF/A is simply an archiving standard. Print quality degradation typically occurs because additional optimizations—like image compression, downsampling, or OCR—are applied simultaneously during the conversion process.
Can I increase the darkness of a PDF before printing?
Yes, you can adjust your printer's settings (such as increasing toner density or disabling 'Draft' mode). Alternatively, use the 'Print As Image' feature in your PDF viewer's advanced print settings, which bypasses font rendering and prints the exact pixels of the scanned page.
