How to Fix Acrobat Redact Tool Selecting Random Areas of Text
Question details
The user experiences an issue where the Acrobat Redact tool applies redaction boxes to random areas of text instead of the specifically selected line.

- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Redacting sensitive text in a PDF document.
- Observed behavior
- Redaction boxes appear randomly throughout the document when only a single line is selected, even on newly created simple PDFs.
Ensure you test the redaction process on a duplicate copy of your document rather than the original to prevent accidental data loss while troubleshooting.
Adjust Display Scaling and Graphics Settings
Fix rendering and input misalignment by checking your display scaling and hardware graphics acceleration.
In many cases, erratic mouse selection or redaction box misplacement is caused by a conflict between high-DPI display scaling and hardware rendering.
Right-click your desktop, select Display settings, and temporarily set the scaling and layout to 100% to see if the selection issue resolves.
Open Acrobat, go to Edit > Preferences > Page Display, and uncheck 'Use 2D graphics acceleration' under the Rendering section.
Connect a different mouse or use your laptop's trackpad to rule out hardware-specific input issues causing erratic text selection.

Reset Acrobat Preferences and Update Software
Clear corrupted application settings and ensure your graphics drivers and Acrobat version are up to date.
Check for Document Corruption
Determine if the erratic redaction behavior stems from a corrupted source PDF file.
Redact PDF Text Accurately with WPS Office
If Adobe Acrobat continues to select text randomly, you can easily and precisely redact sensitive information using WPS PDF. It offers an intuitive, bug-free redaction experience.
- 1. Open your PDF: Launch WPS Office and open the PDF document that contains sensitive information.
- 2. Access the Protect tab: Navigate to the Protect tab on the top menu ribbon.
- 3. Select Redact: Click on the Redact tool and carefully drag your cursor over the specific text or area you wish to hide.
- 4. Apply Redactions: Click 'Apply Redactions' to permanently remove the selected information and save your secure document.

Frequently Asked Questions
Why are my PDF redaction boxes misaligned with the text?
Misaligned redaction boxes usually occur due to display scaling conflicts in your OS, outdated graphics drivers, or corrupted PDF source files that misrepresent the document's text layer.
Can display scaling affect PDF text selection?
Yes, if your monitor's display scaling is set higher than 100%, some PDF editors struggle to correctly map the cursor position to the actual text layer, leading to erratic selection behavior.
Is redaction permanent in PDF documents?
Yes, once redactions are applied and the document is saved, the selected text or images are permanently removed from the file and cannot be recovered. Always keep an unredacted backup if needed.
How do I turn off hardware graphics acceleration in Acrobat?
You can disable it by navigating to Edit > Preferences > Page Display, and unchecking the option for 'Use 2D graphics acceleration' under the Rendering category.




