How to Redact or Remove Embedded PDF Attachments
Question details
The user needs to know how to properly redact text inside a PDF attachment or delete the attachment entirely, as doing this directly sometimes causes the PDF software to close unexpectedly.

- Product
- Adobe Acrobat / PDF Editors
- Device & OS
- not provided
- Scenario
- Removing or masking sensitive information contained within an embedded file attached to a parent PDF document.
- Observed behavior
- The PDF software (such as Acrobat) may close when an embedded attachment is opened directly for redaction. There is also confusion regarding whether flattening the PDF or deleting the attachment achieves the goal of redaction.
Determine whether you need to hide specific text while keeping the attached file, or if you can completely delete the attached file without a trace, as these actions require different steps.
Completely Remove an Embedded Attachment
If the attached file contains sensitive information that isn't needed, completely deleting the attachment from the PDF is the safest and most reliable option.
Open your PDF document in your PDF editor. Navigate to the left-hand navigation panel and click on the 'Attachments' icon, which is usually shaped like a paperclip.
In the Attachments pane, locate the specific embedded file you want to remove.
Right-click the attachment name and select 'Delete' from the context menu. You can also select it and press the Delete key on your keyboard.
Go to 'File' > 'Save' to ensure the attachment is permanently removed from the document structure.

Redact Specific Content Within an Attachment
Use this method if you need to keep the attached document in the PDF but must hide specific sensitive information inside it.
Easily Manage PDF Attachments with WPS Office
If you are experiencing unexpected crashes when managing or redacting PDF attachments in other software, WPS Office provides a highly stable, lightweight, and intuitive environment for handling complex PDF tasks.
- 1. Open your PDF: Launch WPS Office and open your PDF document containing the attachments.
- 2. Access the Attachments Panel: Click on the paperclip icon located in the left sidebar to open the Attachments pane.
- 3. Manage Attachments: Right-click any embedded file to easily open, save, or delete the attachment. Make sure to save the document to apply your changes.

Frequently Asked Questions
Does redacting a PDF automatically redact its attachments?
No. When you apply redactions to the main PDF document, the redaction process only affects the primary document's text and images. Any embedded PDF attachments must be opened and redacted separately.
Why does flattening a PDF affect my attachments?
Flattening a PDF merges all interactive elements, annotations, and visual layers into a single, flat layer. Depending on the software used, this process can disable interactive features and might make embedded attachments completely inaccessible or remove them.
Is deleting a PDF attachment the same as redacting it?
No, they are fundamentally different. Deleting removes the entire attached file from the parent PDF without leaving a trace. Redaction involves blacking out or permanently hiding specific, sensitive text or images within a file while allowing the rest of the file to remain readable and attached.




