How to Enable the Apply Button in Adobe Acrobat Redact Tool
Question details
The user is unable to execute a redaction because the Apply button is greyed out or disabled in the PDF editor.

- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- The user has marked sensitive text or images for redaction and needs to finalize the removal.
- Observed behavior
- The Apply button in the Redaction tool remains disabled, preventing the user from permanently applying the redaction marks to the document.
Always create and save a backup copy of your original PDF document before stripping security restrictions or converting file formats.
Remove Security Restrictions and Digital Signatures
Check for and remove document protections like passwords, PDF/A restrictions, and digital signatures that block redaction.
When a PDF is locked with a permissions password, certified with a digital signature, or saved in the archival PDF/A format, Adobe Acrobat automatically disables tools that modify the document's contents, including the Redact tool.
Go to 'File' > 'Properties' and click the 'Security' tab. Check if changing the document is allowed. If not, select 'No Security' from the Security Method dropdown and enter the password if prompted.
If you see a blue banner at the top of the document stating it is viewed in PDF/A mode, click the 'Enable Editing' button on the banner to turn off restricted mode.
If the document has been digitally signed, the signature locks the content to prevent tampering. You must obtain an unsigned version of the document from the author or clear the signature if you have the rights to do so.
Navigate to the Redact tool menu and select 'Sanitize Document'. This feature attempts to clear hidden data and certain restrictions, which may re-enable the Apply button.

Convert to Word Format and Save Back to PDF
Exporting the restricted PDF to a Word document and converting it back acts as a workaround to strip persistent editing restrictions.
Redact Sensitive PDF Information Easily with WPS Office
If Acrobat's security settings keep blocking your workflow, try WPS PDF. It provides a dedicated Protect tab with a user-friendly Redact tool to permanently hide sensitive information without complex restriction troubleshooting.
- 1. Open PDF: Launch WPS Office and open your target PDF file.
- 2. Access Protect Tools: Navigate to the 'Protect' tab on the top toolbar.
- 3. Select Redact: Click the 'Redact' button and highlight the text, images, or areas you need to hide.
- 4. Apply Redactions: Click 'Apply Redactions' in the menu to permanently remove the marked content.
- 5. Save Document: Save your PDF to finalize the redaction and ensure the hidden data cannot be recovered.

Frequently Asked Questions
Why is the Apply button greyed out in the Acrobat Redact tool?
The Apply button is disabled when the PDF contains permissions passwords restricting edits, is saved in read-only PDF/A mode, or features a digital signature that prevents the content from being modified after signing.
Does redacting a PDF permanently delete the text?
Yes, once you click Apply, the redaction process permanently removes the underlying text or image data from the file, replacing it with a black box or custom overlay. It cannot be undone once saved.
How do I turn off PDF/A mode to enable editing?
When viewing a PDF/A document, look for a blue notification banner at the top of the viewing area. Click the 'Enable Editing' button within this banner to switch to standard editing mode and restore access to the Redact tools.
Can I redact a document that has been digitally signed?
Digitally certified or signed documents lock editing to prevent tampering. You generally cannot redact them directly. You must remove the signature, ask the creator for an unsigned copy, or print the document to PDF to create a flattened, unsigned version.




