How to Improve Poor Scanned PDF Quality in Adobe Acrobat Pro DC
Question details
The user needs to fix the display quality of scanned PDFs that appear blurry or unclear in Adobe Acrobat Pro DC.
- Product
- Adobe Acrobat Pro DC
- Device & OS
- not provided
- Scenario
- Viewing scanned PDF documents in Adobe Acrobat Pro DC.
- Observed behavior
- Scanned PDFs look pixelated or unclear in Acrobat Pro DC, even though the same files display correctly in Acrobat Reader or other PDF viewers.
Ensure you are running the latest version of Adobe Acrobat Pro DC, as outdated software can sometimes cause rendering bugs with scanned images.
Enable the 'Smooth Images' Option in Preferences
Adjusting the rendering preferences in Acrobat Pro DC allows the software to properly anti-alias and smooth the display of scanned documents.
Often, the display differences between Adobe Reader and Acrobat Pro DC come down to individual preference settings. By enabling image smoothing, the software interpolates pixels on scanned pages to make text and graphics appear much cleaner on your screen.
Open Adobe Acrobat Pro DC. Click on 'Edit' in the top menu bar (or 'Acrobat' if you are on a Mac) and select 'Preferences' from the drop-down menu. Alternatively, you can press Ctrl+K (Windows) or Cmd+K (Mac).
In the left-hand Categories pane of the Preferences window, click on 'Page Display'.
Look for the 'Rendering' section on the right side. Check the box next to 'Smooth images'.
Click 'OK' to apply the changes. Close and re-open your scanned PDF to see the improved rendering quality.
View and Edit Scanned PDFs Clearly with WPS Office
If Acrobat Pro DC continues to struggle with rendering your scanned documents, WPS Office offers a lightweight and powerful PDF Reader that automatically optimizes image display for crisp, clear reading without requiring manual preference tweaks.
- 1. Download WPS Office: Download and install WPS Office on your computer from the official website.
- 2. Open the PDF Tool: Launch WPS Office and click on the 'PDF' tab on the home screen.
- 3. Load Your Scanned Document: Click 'Open' and select your scanned PDF file.
- 4. Enjoy Optimized Viewing: The document will load instantly with automatically optimized rendering, ensuring clear reading and easy annotation.
Frequently Asked Questions
Why do my PDFs look fine in Reader but blurry in Acrobat Pro?
Acrobat Reader and Acrobat Pro DC maintain separate preference files. If the 'Smooth images' or related rendering settings are disabled in Pro but enabled in Reader, the identical file will look noticeably different.
Can enhancing the scan improve the quality further?
Yes. You can use Acrobat's 'Enhance Scans' tool to apply optical character recognition (OCR) and deskew the pages, which permanently improves the document's legibility beyond just adjusting local display preferences.
What if the 'Smooth images' setting is already checked but the PDF is still blurry?
Try unchecking 'Use 2D graphics acceleration' in the Page Display preferences, or update your computer's graphics card drivers, as display anomalies can sometimes stem from hardware acceleration conflicts.
