How to Whiten or Remove Part of a Scanned PDF
Question details
The user wants to securely hide or permanently remove specific sections of a scanned PDF document.

- Product
- Adobe Acrobat Pro DC
- Device & OS
- not provided
- Scenario
- Editing a scanned PDF to conceal sensitive or unnecessary information.
- Observed behavior
- The user needs a method to make a selected area appear completely white or to permanently delete the underlying contents from the scanned file.
Before securely removing content, ensure you have a backup copy of your original scanned PDF, as redaction permanently deletes the selected data.
Use the Redact Tool for Permanent Removal
The Redact tool securely and permanently deletes the selected content from the scanned PDF, replacing it with a white or colored box.
This method is highly recommended if you are dealing with sensitive data, personal information, or confidential business records, as it ensures the hidden data cannot be recovered by others.
Launch Adobe Acrobat Pro DC, navigate to the 'Tools' menu, and select the 'Redact' option.
Choose 'Mark for Redaction' from the top toolbar and draw a rectangle over the text or image area you want to permanently remove.
Click 'Apply' in the Redact toolbar to execute the redaction. The selected content will be deleted and covered completely.

Cover Content with a White Rectangle
Use this method if you only need a quick visual cover-up and do not need to securely delete the underlying data.
Whiten Out PDF Content Easily with WPS PDF
You can effortlessly cover up, edit, or remove parts of your scanned PDFs using WPS Office. It offers an intuitive shape insertion tool, serving as a lightweight and cost-effective alternative to heavy PDF editors.
- 1. Open the PDF in WPS Office: Launch WPS Office and open your scanned PDF document.
- 2. Select the Insert Shape Tool: Navigate to the 'Insert' tab on the top ribbon and click on 'Shapes' to choose a rectangle.
- 3. Cover the Text: Draw the rectangle over the area you wish to hide, then set both the shape's fill and outline color to white.
- 4. Save the Document: Click 'Save' or go to 'Menu' > 'Export to PDF' to apply your visual changes to the document.

Frequently Asked Questions
Does adding a white box securely remove information from my PDF?
No. Adding a white rectangle only hides the information visually. Anyone using a PDF editor can move or delete the shape to reveal the original scanned content underneath. For secure removal, you must use a dedicated Redact tool.
Can I remove part of a scanned PDF without Adobe Acrobat Pro?
Yes, you can use other PDF editors like WPS Office, which allows you to insert white shapes over text. There are also various online PDF editors that offer redaction and visual editing features.
Why can't I just delete the text in a scanned PDF?
A scanned PDF is essentially a flat image of a document, not editable text. To delete specific words, you either need to use OCR (Optical Character Recognition) to convert the image to editable text first, or use visual cover-ups like redaction tools or white shapes.




